Preview: Recent Articles in Phys. Rev. C
Recent Articles in Phys. Rev. C
Recent articles in Physical Review C
Published: 2016-10-25T17:21:45-04:00
Odd-even staggering in yields of neutron-deficient nuclei produced by projectile fragmentation
2016-10-25T10:00:00-04:00
Author(s): B. Mei
et al.Background: Fragment yields exhibit a strong odd-even staggering (OES). This OES has been experimentally observed in different fragmentation reactions with different projectile-target combinations. However, the experimental data are still scarce for fragments close to drip lines and the origin of th…
[Phys. Rev. C 94, 044615] Published Tue Oct 25, 2016
Examination of experimental conditions for the production of proton-rich and neutron-rich hypernuclei
2016-10-25T10:00:00-04:00
Author(s): C. Rappold and J. López-Fidalgo
After the demonstration of the feasibility of hypernuclear spectroscopy with heavy-ion beams, the HypHI Collaboration will next focus on the study of proton- and neutron-rich hypernuclei. The use of a fragment separator for the production and separation of rare-isotope beams is a crucial aspect to p…
[Phys. Rev. C 94, 044616] Published Tue Oct 25, 2016
Hidden-charm pentaquark states in heavy ion collisions at energies available at the CERN Large Hadron Collider
2016-10-25T10:00:00-04:00
Author(s): Rui-Qin Wang, Jun Song, Kai-Jia Sun, Lie-Wen Chen, Gang Li, and Feng-Lan Shao
In the framework of the quark combination, we derive the yield formulas and study the yield ratios of hidden-charm pentaquark states in ultrarelativistic heavy ion collisions. We propose some interesting yield ratios which clearly exhibit the production relationships between different hidden-charm p…
[Phys. Rev. C 94, 044913] Published Tue Oct 25, 2016
Bulk viscosity for pion and nucleon thermal fluctuation in the hadron resonance gas model
2016-10-25T10:00:00-04:00
Author(s): Sabyasachi Ghosh, Sandeep Chatterjee, and Bedangadas Mohanty
We have calculated microscopically bulk viscosity of hadronic matter, where equilibrium thermodynamics for all hadrons in medium are described by the hadron resonance gas (HRG) model. Considering pions and nucleons as abundant medium constituents, we have calculated their thermal widths, which inver…
[Phys. Rev. C 94, 045208] Published Tue Oct 25, 2016
New neutrino source for the study of solar neutrino physics in the vacuum-matter transition region
2016-10-25T10:00:00-04:00
Author(s): Jae Won Shin, Myung-Ki Cheoun, Tae-Sun Park, and Toshitaka Kajino
Production of a neutrino source through a proton-induced reaction is studied by using the particle transport code geant4. Unstable isotopes such as ^{27}Si can be produced when the ^{27}Al target is bombarded by 15-MeV energetic proton beams. Through the β-decay process of the unstable isotope, a ne…
[Phys. Rev. C 94, 045804] Published Tue Oct 25, 2016
Effect of isoscalar spin-triplet pairings on spin-isospin responses in sd-shell nuclei
2016-10-24T10:00:00-04:00
Author(s): H. Sagawa, T. Suzuki, and M. Sasano
The spin magnetic dipole transitions and the neutron-proton spin-spin correlations in sd−shell even-even nuclei with N=Z are investigated using shell-model wave functions. The isoscalar spin-triplet pairing correlation provides a substantial quenching effect on the spin magnetic dipole transitions, …
[Phys. Rev. C 94, 041303(R)] Published Mon Oct 24, 2016
Dissecting nucleon transition electromagnetic form factors
2016-10-24T10:00:00-04:00
Author(s): Jorge Segovia and Craig D. Roberts
In Poincaré-covariant continuum treatments of the three valence-quark bound-state problem, the force behind dynamical chiral symmetry breaking also generates nonpointlike interacting diquark correlations in the nucleon and its resonances. We detail the impact of these correlations on the electromagn…
[Phys. Rev. C 94, 042201(R)] Published Mon Oct 24, 2016
Role of core excitation in (d,p) transfer reactions
2016-10-24T10:00:00-04:00
Author(s): A. Deltuva, A. Ross, E. Norvaišas, and F. M. Nunes
Background: Recent work found that core excitations can be important in extracting structure information from (d,p) reactions.
[Phys. Rev. C 94, 044613] Published Mon Oct 24, 2016
Chiral symmetry restoration in heavy-ion collisions at intermediate energies
2016-10-24T10:00:00-04:00
Author(s): A. Palmese, W. Cassing, E. Seifert, T. Steinert, P. Moreau, and E. L. Bratkovskaya
We study the effect of the chiral symmetry restoration (CSR) on heavy-ion collisions observables in the energy range sqrt[s_{NN}]=3–20 GeV within the parton-hadron-string dynamics (PHSD) transport approach. The PHSD includes the deconfinement phase transition as well as essential aspects of CSR in t…
[Phys. Rev. C 94, 044912] Published Mon Oct 24, 2016
Shears mechanism and development of collectivity in ^{141} Sm
2016-10-21T10:00:00-04:00
Author(s): S. Rajbanshi, Sajad Ali, Abhijit Bisoi, Somnath Nag, S. Saha, J. Sethi, T. Bhattacharjee, S. Bhattacharyya, S. Chattopadhyay, G. Gangopadhyay, G. Mukherjee, R. Palit, R. Raut, M. Saha Sarkar, A. K. Singh, T. Trivedi, and A. Goswami
High-spin states in the dipole structure of ^{141}Sm have been investigated using the fusion-evaporation reaction ^{116}Cd(^{31}P,p5n) at beam energy 148 MeV using the Indian National Gamma Array. The spin parity of the observed dipole bands I and II has been established firmly from the spectroscopi…
[Phys. Rev. C 94, 044318] Published Fri Oct 21, 2016
Breathing-like excited state of the Hoyle state in ^{12} C
2016-10-21T10:00:00-04:00
Author(s): Bo Zhou, Akihiro Tohsaki, Hisashi Horiuchi, and Zhongzhou Ren
The existence of the 0_{3}^{+} and 0_{4}^{+} states around 10 MeV excitation energy in ^{12}C is confirmed by a fully microscopic 3α cluster model. Firstly, a generator coordinate method (GCM) calculation is performed by superposing optimized 2α+α Tohsaki-Horiuchi-Schuck-Röpke (THSR) wave functions …
[Phys. Rev. C 94, 044319] Published Fri Oct 21, 2016
Structure of dipole bands in doubly odd ^{102} Ag
2016-10-21T10:00:00-04:00
Author(s): V. Singh, S. Sihotra, S. S. Malik, G. H. Bhat, R. Palit, J. A. Sheikh, S. Kumar, N. Singh, K. Singh, J. Goswamy, J. Sethi, S. Saha, T. Trivedi, and D. Mehta
Excited states in the transitional doubly odd ^{102}Ag nucleus were populated in the ^{75}As(^{31}P,p3n) fusion-evaporation reaction using the 125 MeV incident ^{31}P beam. The subsequent deexcitations were investigated through in-beam γ-ray spectroscopic techniques using the Indian National Gamma A…
[Phys. Rev. C 94, 044320] Published Fri Oct 21, 2016
Δ(1232) effects in density-dependent relativistic Hartree-Fock theory and neutron stars
2016-10-21T10:00:00-04:00
Author(s): Zhen-Yu Zhu, Ang Li, Jin-Niu Hu, and Hiroyuki Sagawa
The density-dependent relativistic Hartree-Fock (DDRHF) theory is extended to include Δ isobars for the study of dense nuclear matter and neutron stars. To this end, we solve the Rarita-Schwinger equation for spin-3/2 particle. Both the direct and exchange terms of the Δ isobars' self-energies are e…
[Phys. Rev. C 94, 045803] Published Fri Oct 21, 2016
Observation of the 2^{+} isomer in ^{52} Co
2016-10-19T10:00:00-04:00
Author(s): S. E. A. Orrigo
et al.We report the first observation of the 2^{+} isomer in ^{52}Co, produced in the β decay of the 0^{+}, ^{52}Ni ground state. We have observed three γ rays at 849, 1910, and 5185 keV characterizing the β de-excitation of the isomer. We have measured a half-life of 102(6) ms for the isomeric state. The…
[Phys. Rev. C 94, 044315] Published Wed Oct 19, 2016
Lifetime measurement of the first excited state in ^{37} S
2016-10-19T10:00:00-04:00
Author(s): K. L. Wang
et al.Lifetime of the 3/2^{−} first excited state in ^{37}S populated by the β^{−} decay of ^{37}P has been measured using β−γ delayed coincidence technique. The B(E2;7/2^{−}→3/2^{−}) value in ^{37}S deduced from the lifetime comes close to the B(E2;0^{+}→2_{1}^{+}) value in weakly deformed ^{38}S but dev…
[Phys. Rev. C 94, 044316] Published Wed Oct 19, 2016
Proton emission from ^{125} Pm could be observed
2016-10-19T10:00:00-04:00
Author(s): Enrico Maglione and Lidia S. Ferreira
We perform a feasibility study for the search of proton decay from Pm, the last element without an isotope found, that decays by proton emission in the region of charges between 50 and 83. The behaviors of the half-lives for decay from the ground and possible isomeric states of ^{125}Pm are discusse…
[Phys. Rev. C 94, 044317] Published Wed Oct 19, 2016
Correlations between critical parameters and bulk properties of nuclear matter
2016-10-19T10:00:00-04:00
Author(s): O. Lourenço, B. M. Santos, M. Dutra, and A. Delfino
The present work starts by providing a clear identification of correlations between critical parameters (T_{c}, P_{c}, ρ_{c}) and bulk quantities at zero temperature of relativistic mean-field models (RMF) presenting third- and fourth-order self-interactions in the scalar field σ. Motivated by the n…
[Phys. Rev. C 94, 045207] Published Wed Oct 19, 2016
Reaction and fusion cross sections for the near-symmetric system ^{129} Xe+ ^{nat} Sn from 8A to 35A MeV
2016-10-18T10:00:00-04:00
Author(s): L. Manduci, O. Lopez, A. Chbihi, M. F. Rivet, R. Bougault, J. D. Frankland, B. Borderie, E. Galichet, M. La Commara, N. Le Neindre, I. Lombardo, M. Pârlog, E. Rosato, R. Roy, G. Verde, and E. Vient (INDRA Collaboration)
Background: We study heavy-ion reactions from barrier up to Fermi energy. The data were acquired with the INDRA detector at the GANIL (Caen, France) facility.
[Phys. Rev. C 94, 044611] Published Tue Oct 18, 2016
Moments of fusion-barrier distributions
2016-10-18T10:00:00-04:00
Author(s): K. E. Rehm, H. Esbensen, C. L. Jiang, B. B. Back, A. M. Stefanini, and G. Montagnoli
A study of fusion-barrier distributions through an analysis of their moments is presented. The moments can be obtained from least-squares fits of the energy-weighted fusion cross sections without the need of calculating second derivatives. The zeroth and first moments determine the fusion radius R a…
[Phys. Rev. C 94, 044612] Published Tue Oct 18, 2016
Rotating quark-gluon plasma in relativistic heavy-ion collisions
2016-10-18T10:00:00-04:00
Author(s): Yin Jiang, Zi-Wei Lin, and Jinfeng Liao
We study the rotational collective motion of the quark-gluon plasma in relativistic heavy-ion collisions using the widely adopted a multiphase transport (AMPT) model. The global angular momentum, the average vorticity carried by the quark-gluon plasma, and the locally defined vorticity fields are co…
[Phys. Rev. C 94, 044910] Published Tue Oct 18, 2016
Generalized-seniority pattern and thermal properties in even Sn isotopes
2016-10-17T10:00:00-04:00
Author(s): L. Y. Jia and Chong Qi
Even tin isotopes of mass number A=108–124 are calculated with realistic interactions in the generalized-seniority approximation of the nuclear shell model. For each nucleus, we compute the lowest 10 000 states (5000 of each parity) up to around 8 MeV in excitation energy, by allowing as many as fou…
[Phys. Rev. C 94, 044312] Published Mon Oct 17, 2016
Fully self-consistent study of charge-exchange resonances and the impact on the symmetry energy parameters
2016-10-17T10:00:00-04:00
Author(s): X. Roca-Maza, Li-Gang Cao, G. Colò, and H. Sagawa
We have examined within a fully self-consistent theoretical framework the energy difference between the anti-analog giant dipole resonance (AGDR) and the isobaric analog state (IAS), E_{AGDR}−E_{IAS}, as an indicator of the neutron skin and of the density behavior of the symmetry energy. We have imp…
[Phys. Rev. C 94, 044313] Published Mon Oct 17, 2016
Feeding of Rh and Ag isomers in fast-neutron-induced reactions
2016-10-17T10:00:00-04:00
Author(s): N. Fotiades, M. Devlin, R. O. Nelson, T. Kawano, and J. J. Carroll
Background: In (n,n^{′}) reactions on stable Ir and Au isotopes in the mass A=190 region, the experimentally established feeding of the isomers relative to the feeding of the corresponding ground states increases with increasing neutron energy, up to the neutron energy where the (n,2n) reaction chan…
[Phys. Rev. C 94, 044608] Published Mon Oct 17, 2016
Mass tomography at different momentum ranges in quark-gluon plasma
2016-10-17T10:00:00-04:00
Author(s): Magdalena Djordjevic, Bojana Blagojevic, and Lidija Zivkovic
We here show that at lower momentum (i.e., p_{⊥}∼10GeV) single particle suppression for different types of probes exhibit a clear mass hierarchy, which is a direct consequence of the differences in the energy loss, rather than the differences in the initial distributions. On the other hand, we predi…
[Phys. Rev. C 94, 044908] Published Mon Oct 17, 2016
Fission fragment angular distributions in pre-actinide nuclei
2016-10-13T10:00:00-04:00
Author(s): Tathagata Banerjee, S. Nath, A. Jhingan, Gurpreet Kaur, R. Dubey, Abhishek Yadav, P. V. Laveen, A. Shamlath, M. Shareef, J. Gehlot, N. Saneesh, E. Prasad, P. Sugathan, and Santanu Pal
Background: Complete fusion of two nuclei leading to formation of a heavy compound nucleus (CN) is known to be hindered by various fission-like processes, in which the composite system reseparates after capture of the target and the projectile inside the potential barrier. As a consequence of these …
[Phys. Rev. C 94, 044607] Published Thu Oct 13, 2016
Production of deuterium, tritium, and ^{3} He in central Pb + Pb collisions at 20A,30A,40A,80A, and 158A GeV at the CERN Super Proton Synchrotron
2016-10-13T10:00:00-04:00
Author(s): T. Anticic
et al. (NA49 Collaboration)
Production of d,t, and ^{3}He nuclei in central Pb+Pb interactions was studied at five collision energies (sqrt[s_{NN}]=6.3, 7.6, 8.8, 12.3, and 17.3 GeV) with the NA49 detector at the CERN Super Proton Synchrotron. Transverse momentum spectra, rapidity distributions, and particle ratios were measur…
[Phys. Rev. C 94, 044906] Published Thu Oct 13, 2016
3D glasma initial state for relativistic heavy ion collisions
2016-10-13T10:00:00-04:00
Author(s): Björn Schenke and Sören Schlichting
We extend the impact-parameter-dependent Glasma model to three dimensions using explicit small-x evolution of the two incoming nuclear gluon distributions. We compute rapidity distributions of produced gluons and the early-time energy momentum tensor as a function of space-time rapidity and transver…
[Phys. Rev. C 94, 044907] Published Thu Oct 13, 2016
Transport coefficients of the Gribov-Zwanziger plasma
2016-10-12T10:00:00-04:00
Author(s): Wojciech Florkowski, Radoslaw Ryblewski, Nan Su, and Konrad Tywoniuk
We study dynamic features of a plasma consisting of gluons whose infrared dynamics is improved by the Gribov-Zwanziger quantization. This approach embodies essential features of color confinement which set the plasma apart from conventional quasiparticle systems in several aspects. Our study focusse…
[Phys. Rev. C 94, 044904] Published Wed Oct 12, 2016
Thermal blurring of event-by-event fluctuations generated by rapidity conversion
2016-10-12T10:00:00-04:00
Author(s): Yutaro Ohnishi, Masakiyo Kitazawa, and Masayuki Asakawa
We study the effect of thermal blurring caused by the use of (momentum-space) rapidity as a proxy of coordinate-space rapidity in experimental measurements of conserved-charge fluctuations in relativistic heavy-ion collisions. In theoretical studies assuming statistical mechanics, calculated fluctua…
[Phys. Rev. C 94, 044905] Published Wed Oct 12, 2016
Negligible suppression of the complete fusion of ^{6,7} Li on light targets, at energies above the barrier
2016-10-11T10:00:00-04:00
Author(s): M. F. Guo, G. L. Zhang, P. R. S. Gomes, J. Lubian, and E. Ferioli
Motivated by a recent work performed at Australian National University by S. Kalkal et al. [Phys. Rev. C 93, 044605 (2016)] on breakup and its time scale, where it was shown that the prompt (or near-target) breakup of ^{6,7}Li is almost negligible and consequently the near-barrier complete fusion c…
[Phys. Rev. C 94, 044605] Published Tue Oct 11, 2016
Possibilities of production of transfermium nuclei in charged-particle evaporation channels
2016-10-11T10:00:00-04:00
Author(s): Juhee Hong, G. G. Adamian, and N. V. Antonenko
The possibilities of direct production of the isotopes of transfermium nuclei ^{259,260}Md, ^{260,261}No, ^{261–264}Lr, ^{264,265}Rf, ^{264–268}Db, ^{266–269}Sg, ^{266–271}Bh, ^{267–274}Hs, and ^{270–274}Mt in various asymmetric hot fusion-evaporation reactions are studied. The excitation functions …
[Phys. Rev. C 94, 044606] Published Tue Oct 11, 2016
Radii of neutron drops probed via the neutron skin thickness of nuclei
2016-10-10T10:00:00-04:00
Author(s): P. W. Zhao and S. Gandolfi
Multineutron systems are crucial to understanding the physics of neutron-rich nuclei and neutron stars. Neutron drops, neutrons confined in an external field, are investigated systematically in both nonrelativistic and relativistic density functional theories and with ab initio calculations. We demo…
[Phys. Rev. C 94, 041302(R)] Published Mon Oct 10, 2016
Deformation and shape changes in ^{167} W
2016-10-10T10:00:00-04:00
Author(s): C. B. Li (李聪博), H. L. Ma (马海亮), X. G. Wu (吴晓光), Q. M. Chen (陈启明), C. Y. He (贺创业), Y. Zheng (郑云), G. S. Li (李广生), Y. H. Wu (吴义恒), S. P. Hu (胡世鹏), H. W. Li (李红伟), L. P. Luo (罗朋威), J. Zhong (钟健), and B. J. Zhu (朱保吉)
Lifetime measurements of yrast levels in ^{167}W were measured using the recoil-distance Doppler-shift method. The differential decay-curve method was applied for a lifetime determination. Excited states of the nucleus ^{167}W were populated by the reaction ^{142}Nd (^{28}Si, 3n) at a beam energy of…
[Phys. Rev. C 94, 044307] Published Mon Oct 10, 2016
Quark mean field model with pion and gluon corrections
2016-10-10T10:00:00-04:00
Author(s): Xueyong Xing, Jinniu Hu, and Hong Shen
The properties of nuclear matter and finite nuclei are studied within the quark mean field (QMF) model by taking the effects of pions and gluons into account at the quark level. The nucleon is described as the combination of three constituent quarks confined by a harmonic oscillator potential. To sa…
[Phys. Rev. C 94, 044308] Published Mon Oct 10, 2016
Electromagnetic fields with electric and chiral magnetic conductivities in heavy ion collisions
2016-10-10T10:00:00-04:00
Author(s): Hui Li, Xin-li Sheng, and Qun Wang
We derive an analytic formula for electric and magnetic fields produced by a moving charged particle in a conducting medium with the electric conductivity σ and the chiral magnetic conductivity σ_{χ}. We use the Green's function method and assume that σ_{χ} is much smaller than σ. The compact algebr…
[Phys. Rev. C 94, 044903] Published Mon Oct 10, 2016
Anomalous transport model study of chiral magnetic effects in heavy ion collisions
2016-10-10T10:00:00-04:00
Author(s): Yifeng Sun, Che Ming Ko, and Feng Li
Using an anomalous transport model for massless quarks and antiquarks, we study the effect of a magnetic field on the elliptic flows of quarks and antiquarks in relativistic heavy ion collisions. With initial conditions from a blast wave model and assuming that the strong magnetic field produced in …
[Phys. Rev. C 94, 045204] Published Mon Oct 10, 2016
Experimental study of the astrophysical γ-process reaction ^{124} Xe(α,γ) ^{128} Ba
2016-10-10T10:00:00-04:00
Author(s): Z. Halász, E. Somorjai, Gy. Gyürky, Z. Elekes, Zs. Fülöp, T. Szücs, G. G. Kiss, N. T. Szegedi, T. Rauscher, J. Görres, and M. Wiescher
Background: The synthesis of heavy, proton rich isotopes in the astrophysical γ process proceeds through photodisintegration reactions. For the improved understanding of the process, the rates of the involved nuclear reactions must be known. The reaction ^{128}Ba(γ,α)^{124}Xe was found to affect the…
[Phys. Rev. C 94, 045801] Published Mon Oct 10, 2016
Effects of microscopic transport coefficients on fission observables calculated by the Langevin equation
2016-10-07T10:00:00-04:00
Author(s): M. D. Usang, F. A. Ivanyuk, C. Ishizuka, and S. Chiba
Nuclear fission is treated by using the Langevin dynamical description with macroscopic and microscopic transport coefficients (mass and friction tensors), and it is elucidated how the microscopic (shell and pairing) effects in the transport coefficients, especially their dependence on temperature, …
[Phys. Rev. C 94, 044602] Published Fri Oct 07, 2016
Negative-parity nucleon excited state in nuclear matter
2016-10-07T10:00:00-04:00
Author(s): Keisuke Ohtani, Philipp Gubler, and Makoto Oka
Spectral functions of the nucleon and its negative-parity excited state in nuclear matter are studied by using QCD sum rules and the maximum entropy method (MEM). It is found that in-medium modifications of the spectral functions are attributed mainly to density dependencies of the 〈q[over ¯]q〉 and …
[Phys. Rev. C 94, 045203] Published Fri Oct 07, 2016
Configuration interaction in symmetry-conserving covariant density functional theory
2016-10-06T10:00:00-04:00
Author(s): P. W. Zhao, P. Ring, and J. Meng
A new method to calculate spectroscopic properties of deformed nuclei is proposed: configuration interaction on top of projected density functional theory (CI-PDFT). The general concept of this approach is discussed in the framework of covariant density functional theory and its validity is illustra…
[Phys. Rev. C 94, 041301(R)] Published Thu Oct 06, 2016
Structure and decay pattern of the linear-chain state in ^{14} C
2016-10-06T10:00:00-04:00
Author(s): T. Baba and M. Kimura
The linear-chain states of ^{14}C are theoretically investigated by using the antisymmetrized molecular dynamics. The calculated excitation energies and the α decay widths of the linear-chain states were compared with the observed data reported by recent experiments. The properties of the positive-p…
[Phys. Rev. C 94, 044303] Published Thu Oct 06, 2016
Dipole strength in ^{80} Se for s process and nuclear transmutation of ^{79} Se
2016-10-06T10:00:00-04:00
Author(s): A. Makinaga, R. Massarczyk, M. Beard, R. Schwengner, H. Otsu, T. Al-Abdullah, M. Anders, D. Bemmerer, R. Hannaske, R. John, A. R. Junghans, S. E. Müller, M. Röder, K. Schmidt, and A. Wagner
The dipole strength distribution of ^{80}Se was studied in a photon-scattering experiment by using bremsstrahlung produced with an electron beam of energy 11.5 MeV at the linear accelerator ELBE. We identified 180γ transitions up to an energy of 9.6 MeV, and analyzed the strength in the quasicontinu…
[Phys. Rev. C 94, 044304] Published Thu Oct 06, 2016
Masses of ^{17,18,19,20} Mg
2016-10-06T10:00:00-04:00
Author(s): H. T. Fortune
A previous simple parametrization of mirror energy differences in pairs of nuclei consisting of a p-shell core plus two sd-shell nucleons is applied to a series of mirrors that contain sd-shell nucleons in the core. Results for ^{19,20}Mg agree with experiment and with a potential model. Predictions…
[Phys. Rev. C 94, 044305] Published Thu Oct 06, 2016
Anisotropic matching principle for the hydrodynamic expansion
2016-10-06T10:00:00-04:00
Author(s): Leonardo Tinti
Following the recent success of anisotropic hydrodynamics, I propose here a new, general prescription for the hydrodynamic expansion around an anisotropic background. The anisotropic distribution fixes exactly the complete energy-momentum tensor, just like the effective temperature fixes the proper …
[Phys. Rev. C 94, 044902] Published Thu Oct 06, 2016
“Hammer” events, neutrino energies, and nucleon-nucleon correlations
2016-10-06T10:00:00-04:00
Author(s): L. B. Weinstein, O. Hen, and Eli Piasetzky
Background: Accelerator-based neutrino oscillation measurements depend on observing a difference between the expected and measured rate of neutrino-nucleus interactions at different neutrino energies or different distances from the neutrino source. Neutrino-nucleus scattering cross sections are comp…
[Phys. Rev. C 94, 045501] Published Thu Oct 06, 2016
Spin-flavor structure of chiral-odd generalized parton distributions in the large-N_{c} limit
2016-10-05T10:00:00-04:00
Author(s): P. Schweitzer and C. Weiss
We study the spin-flavor structure of the nucleon's chiral-odd generalized parton distributions (transversity GPDs) in the large-N_{c} limit of QCD. In contrast to the chiral-even case, only three combinations of the four chiral-odd GPDs are nonzero in the leading order of the 1/N_{c} expansion: E[o…
[Phys. Rev. C 94, 045202] Published Wed Oct 05, 2016
Two-dimensional collective Hamiltonian for chiral and wobbling modes
2016-10-03T10:00:00-04:00
Author(s): Q. B. Chen (陈启博), S. Q. Zhang (张双全), P. W. Zhao (赵鹏巍), R. V. Jolos, and J. Meng (孟杰)
A two-dimensional collective Hamiltonian (2DCH) on both azimuth and polar motions in triaxial nuclei is proposed to investigate the chiral and wobbling modes. In the 2DCH, the collective potential and the mass parameters are determined from three-dimensional tilted axis cranking (TAC) calculations. …
[Phys. Rev. C 94, 044301] Published Mon Oct 03, 2016
Fast-timing lifetime measurement of ^{152} Gd
2016-10-03T10:00:00-04:00
Author(s): J. Wiederhold, R. Kern, C. Lizarazo, N. Pietralla, V. Werner, R. V. Jolos, D. Bucurescu, N. Florea, D. Ghita, T. Glodariu, R. Lica, N. Marginean, R. Marginean, C. Mihai, R. Mihai, I. O. Mitu, A. Negret, C. Nita, A. Olacel, S. Pascu, L. Stroe, S. Toma, and A. Turturica
The lifetime τ(0_{2}^{+}) of ^{152}Gd has been measured using fast electronic scintillation timing (FEST) with an array of high-purity germanium (HPGe) and cerium-doped lanthanum bromide (LaBr_{3}) detectors. ^{152}Gd was produced via an (α,n) reaction on a gold backed ^{149}Sm target. The measured …
[Phys. Rev. C 94, 044302] Published Mon Oct 03, 2016
Specific heat of matter formed in relativistic nuclear collisions
2016-10-03T10:00:00-04:00
Author(s): Sumit Basu, Sandeep Chatterjee, Rupa Chatterjee, Tapan K. Nayak, and Basanta K. Nandi
We report the excitation energy dependence of specific heat (c_{v}) of hadronic matter at freeze-out in Au+Au and Cu+Cu collisions at the BNL Relativistic Heavy Ion Collider energies by analyzing the published data on event-by-event mean transverse momentum (〈p_{T}〉) distributions. The 〈p_{T}〉 distr…
[Phys. Rev. C 94, 044901] Published Mon Oct 03, 2016
Excitation function shape and neutron spectrum of the ^{7} Li(p,n) ^{7} Be reaction near threshold
2016-09-30T10:00:00-04:00
Author(s): Guido Martín-Hernández, Pierfrancesco Mastinu, Mario Maggiore, Lorenzo Pranovi, Gianfranco Prete, Javier Praena, Roberto Capote-Noy, Fabiana Gramegna, Augusto Lombardi, Luca Maran, Carlo Scian, and Enrico Munaron
The forward-emitted low energy tail of the neutron spectrum generated by the ^{7}Li(p,n)^{7}Be reaction on a thick target at a proton energy of 1893.6 keV was measured by time-of-flight spectroscopy. The measurement was performed at BELINA (Beam Line for Nuclear Astrophysics) of the Laboratori Nazio…
[Phys. Rev. C 94, 034620] Published Fri Sep 30, 2016
Importance of separated efficiencies between positively and negatively charged particles for cumulant calculations
2016-09-30T10:00:00-04:00
Author(s): Toshihiro Nonaka, Tetsuro Sugiura, ShinIchi Esumi, Hiroshi Masui, and Xiaofeng Luo
We show the importance of separated efficiency corrections between positively and negatively charged particles for cumulant calculations by toy models and analytical calculations. Our results indicate that Sσ in published net-proton results from the STAR experiment will be suppressed about 10% in ce…
[Phys. Rev. C 94, 034909] Published Fri Sep 30, 2016
Measurement of neutron capture on ^{136} Xe
2016-09-29T10:00:00-04:00
Author(s): J. B. Albert, S. J. Daugherty, T. N. Johnson, T. O'Conner, L. J. Kaufman, A. Couture, J. L. Ullmann, and M. Krtička
^{136}Xe is a 0νββ decay candidate isotope, and is used in multiple experiments searching for this hypothetical decay mode. These experiments require precise information about neutron capture for their background characterization and minimization. Thermal and resonant neutron capture on ^{136}Xe hav…
[Phys. Rev. C 94, 034617] Published Thu Sep 29, 2016
Experimental study of the pd(dp)→ ^{3} Heππ reactions close to threshold
2016-09-29T10:00:00-04:00
Author(s): F. Bellemann, A. Berg, J. Bisplinghoff, G. Bohlscheid, J. Ernst, C. Henrich, F. Hinterberger, R. Ibald, R. Jahn, R. Joosten, K. Kilian, A. Kozela, H. Machner, A. Magiera, J. Munkel, P. von Neumann-Cosel, P. von Rossen, H. Schnitker, K. Scho, J. Smyrski, R. Tölle, and C. Wilkin (The COSY-MOMO Collaboration)
New experimental data on the pd→^{3}Heπ^{+}π^{−} reaction obtained with the COSY-MOMO detector below the three-pion threshold are presented. The reaction was also studied in inverse kinematics with a deuteron beam and the higher counting rates achieved were especially important at low excess energie…
[Phys. Rev. C 94, 034618] Published Thu Sep 29, 2016
Role of the atomic electron shell in the double β decay
2016-09-29T10:00:00-04:00
Author(s): E. G. Drukarev, M. Ya. Amusia, and L. V. Chernysheva
We demonstrate that the limiting energy available for ejected electrons in the double-β decay is diminished by about 400 eV due to inelastic processes in the atomic electronic shell.
[Phys. Rev. C 94, 035504] Published Thu Sep 29, 2016
Synthesis of superheavy elements: Uncertainty analysis to improve the predictive power of reaction models
2016-09-28T10:00:00-04:00
Author(s): Hongliang Lü, David Boilley, Yasuhisa Abe, and Caiwan Shen
Background: Synthesis of superheavy elements is performed by heavy-ion fusion-evaporation reactions. However, fusion is known to be hindered with respect to what can be observed with lighter ions. Thus some delicate ambiguities remain on the fusion mechanism that eventually lead to severe discrepanc…
[Phys. Rev. C 94, 034616] Published Wed Sep 28, 2016
Kinematic sensitivity to the Fierz term of β-decay differential spectra
2016-09-28T10:00:00-04:00
Author(s): M. González-Alonso and O. Naviliat-Cuncic
The current most stringent constraints on exotic scalar or tensor couplings in neutron and nuclear β decay, involving left-handed neutrinos, are obtained from the Fierz interference term. The sensitivity to this term in a correlation coefficient is usually driven by an energy-averaged kinematic fact…
[Phys. Rev. C 94, 035503] Published Wed Sep 28, 2016
Neutrino-induced reactions on nuclei
2016-09-26T10:00:00-04:00
Author(s): K. Gallmeister, U. Mosel, and J. Weil
Background: Long-baseline experiments such as the planned deep underground neutrino experiment (DUNE) require theoretical descriptions of the complete event in a neutrino-nucleus reaction. Since nuclear targets are used this requires a good understanding of neutrino-nucleus interactions.
[Phys. Rev. C 94, 035502] Published Mon Sep 26, 2016
Measurement of elliptic flow of light nuclei at sqrt[s_{NN} ] =200, 62.4, 39, 27, 19.6, 11.5, and 7.7 GeV at the BNL Relativistic Heavy Ion Collider
2016-09-23T10:00:00-04:00
Author(s): L. Adamczyk
et al. (STAR Collaboration)
We present measurements of second-order azimuthal anisotropy (v_{2}) at midrapidity (|y|<1.0) for light nuclei d,t,^{3}He (for sqrt[s_{NN}]=200, 62.4, 39, 27, 19.6, 11.5, and 7.7 GeV) and antinuclei d[over ¯] (sqrt[s_{NN}]=200, 62.4, 39, 27, and 19.6 GeV) and ^{3}He[over ¯] (sqrt[s_{NN}]=200 GeV) in the STAR (Solenoidal Tracker at RHIC) experiment. The v_{2} for these light nuclei produced in heavy-ion collisions is compared with those for p and p[over ¯]. We observe mass ordering in nuclei v_{2}(p_{T}) at low transverse momenta (p_{T}<2.0 GeV/c). We also find a centrality dependence of v_{2} for d and d[over ¯]. The magnitude of v_{2} for t and ^{3}He agree within statistical errors. Light-nuclei v_{2} are compared with predictions from a blast-wave model. Atomic mass number (A) scaling of light-nuclei v_{2}(p_{T}) seems to hold for p_{T}/A<1.5GeV/c. Results on light-nuclei v_{2} from a transport-plus-coalescence model are consistent with the experimental measurements.
[Phys. Rev. C 94, 034908] Published Fri Sep 23, 2016
Hyperon stars in a modified quark meson coupling model
2016-09-23T10:00:00-04:00
Author(s): R. N. Mishra, H. S. Sahoo, P. K. Panda, N. Barik, and T. Frederico
We determine the equation of state (EOS) of nuclear matter with the inclusion of hyperons in a self-consistent manner by using a modified quark meson coupling model where the confining interaction for quarks inside a baryon is represented by a phenomenological average potential in an equally mixed s…
[Phys. Rev. C 94, 035805] Published Fri Sep 23, 2016
Examination of directed flow as a signature of the softest point of the equation of state in QCD matter
2016-09-22T10:00:00-04:00
Author(s): Yasushi Nara, Harri Niemi, Akira Ohnishi, and Horst Stöcker
We analyze the directed flow of protons and pions in high-energy heavy-ion collisions in the incident energy range from sqrt[s_{NN}]=7.7 to 27 GeV within a microscopic transport model. Standard hadronic transport approaches do not describe the collapse of directed flow below sqrt[s_{NN}]≃20 GeV. By …
[Phys. Rev. C 94, 034906] Published Thu Sep 22, 2016
Di-neutrons in neutron matter within a Brueckner-Hartree-Fock approach
2016-09-21T10:00:00-04:00
Author(s): Felipe Isaule, H. F. Arellano, and Arnau Rios
We investigate the appearance of di-neutron bound states in pure neutron matter within the Brueckner-Hartree-Fock approach at zero temperature. We consider the Argonne v_{18} and Paris bare interactions as well as chiral two- and three-nucleon forces. Self-consistent single-particle potentials are c…
[Phys. Rev. C 94, 034004] Published Wed Sep 21, 2016
Deformation of the proton emitter ^{113} Cs from electromagnetic transition and proton-emission rates
2016-09-21T10:00:00-04:00
Author(s): D. Hodge
et al.The lifetime of the (11/2^{+}) state in the band above the proton-emitting (3/2^{+}) state in ^{113}Cs has been measured to be τ=24(6) ps from a recoil-decay-tagged differential-plunger experiment. The measured lifetime was used to deduce the deformation of the states using wave functions from a non…
[Phys. Rev. C 94, 034321] Published Wed Sep 21, 2016
Non-Gaussian eccentricity fluctuations
2016-09-21T10:00:00-04:00
Author(s): Hanna Grönqvist, Jean-Paul Blaizot, and Jean-Yves Ollitrault
We study the fluctuations of the anisotropy of the energy density profile created in a high-energy collision at the LHC. We show that the anisotropy in harmonic n has generic non-Gaussian fluctuations. We argue that these non-Gaussianities have a universal character for small systems such as p+Pb co…
[Phys. Rev. C 94, 034905] Published Wed Sep 21, 2016
Description of light nuclei in pionless effective field theory using the stochastic variational method
2016-09-20T10:00:00-04:00
Author(s): Vadim Lensky, Michael C. Birse, and Niels R. Walet
We construct a coordinate-space potential based on pionless effective field theory (EFT) with a Gaussian regulator. Charge-symmetry breaking is included through the Coulomb potential and through two- and three-body contact interactions. Starting with the effective field theory potential, we apply th…
[Phys. Rev. C 94, 034003] Published Tue Sep 20, 2016
Effect of coupling in the ^{28} Si+ ^{154} Sm reaction studied by quasi-elastic scattering
2016-09-20T10:00:00-04:00
Author(s): Gurpreet Kaur, B. R. Behera, A. Jhingan, B. K. Nayak, R. Dubey, Priya Sharma, Meenu Thakur, Ruchi Mahajan, N. Saneesh, Tathagata Banerjee, Khushboo, A. Kumar, S. Mandal, A. Saxena, P. Sugathan, and N. Rowley
The study of the coupling to collective states of the ^{28}Si projectile and ^{154}Sm target in fusion mechanism is reported. Understanding such couplings is important as they influence the barrier height and the formation probability of the compound nuclei, which in turn may be related to the synth…
[Phys. Rev. C 94, 034613] Published Tue Sep 20, 2016
Colliding solitary waves in quark gluon plasmas
2016-09-20T10:00:00-04:00
Author(s): Azam Rafiei and Kurosh Javidan
We study the head-on collision of propagating waves due to perturbations in quark gluon plasmas. We use the Massachusetts Institute of Technology bag model, hydrodynamics equation, and suitable equation of state for describing the time evolution of such localized waves. A nonlinear differential equa…
[Phys. Rev. C 94, 034904] Published Tue Sep 20, 2016
Polarized proton-deuteron scattering as a test of time-reversal invariance
2016-09-20T10:00:00-04:00
Author(s): Yu. N. Uzikov and J. Haidenbauer
Scattering of protons with transversal polarization p_{y}^{p} on deuterons with tensor polarization P_{xz} provides a null-test signal for time-reversal (T) invariance violating but parity (P) conserving effects. We calculate the corresponding null-test observable at beam energies 100–1000MeV within…
[Phys. Rev. C 94, 035501] Published Tue Sep 20, 2016
Electric dipole polarizability from first principles calculations
2016-09-19T10:00:00-04:00
Author(s): M. Miorelli, S. Bacca, N. Barnea, G. Hagen, G. R. Jansen, G. Orlandini, and T. Papenbrock
The electric dipole polarizability quantifies the low-energy behavior of the dipole strength and is related to critical observables such as the radii of the proton and neutron distributions. Its computation is challenging because most of the dipole strength lies in the scattering continuum. In this …
[Phys. Rev. C 94, 034317] Published Mon Sep 19, 2016
γ-ray spectroscopy of ^{33} P and ^{33} S after fusion-evaporation reactions
2016-09-19T10:00:00-04:00
Author(s): B. Fu, M. Seidlitz, A. Blazhev, M. Bouhelal, F. Haas, P. Reiter, K. Arnswald, B. Birkenbach, C. Fransen, G. Friessner, A. Hennig, H. Hess, R. Hirsch, L. Lewandowski, D. Schneiders, B. Siebeck, T. Steinbach, T. Thomas, A. Vogt, A. Wendt, K. Wolf, and K. O. Zell
Excited states with intermediate and high spins in ^{33}P and ^{33}S have been populated using the ^{26}Mg(^{13}C,npα) and ^{26}Mg(^{13}C,2nα) fusion-evaporation reactions. The level schemes of both nuclei have been considerably extended. Utilizing γγ angular correlations the spin-parity assignment …
[Phys. Rev. C 94, 034318] Published Mon Sep 19, 2016
Proton-neutron versus α-like correlations above ^{100} Sn
2016-09-19T10:00:00-04:00
Author(s): V. V. Baran and D. S. Delion
It is known that the α particle reduced width has the largest values in the region above ^{100}Sn, and this behavior is usually attributed to the proton-neutron correlations. To reproduce the reduced α-decay width we use an additional pocket-like surface potential in the single-particle mean field t…
[Phys. Rev. C 94, 034319] Published Mon Sep 19, 2016
Nuclear mean field and double-folding model of the nucleus-nucleus optical potential
2016-09-19T10:00:00-04:00
Author(s): Dao T. Khoa, Nguyen Hoang Phuc, Doan Thi Loan, and Bui Minh Loc
Realistic density dependent CDM3Yn versions of the M3Y interaction have been used in an extended Hartree-Fock (HF) calculation of nuclear matter (NM), with the nucleon single-particle potential determined from the total NM energy based on the Hugenholtz–van Hove theorem that gives rise naturally to …
[Phys. Rev. C 94, 034612] Published Mon Sep 19, 2016
Neutron star radii and crusts: Uncertainties and unified equations of state
2016-09-19T10:00:00-04:00
Author(s): M. Fortin, C. Providência, Ad. R. Raduta, F. Gulminelli, J. L. Zdunik, P. Haensel, and M. Bejger
The uncertainties in neutron star radii and crust properties due to our limited knowledge of the equation of state are quantitatively analyzed. We first demonstrate the importance of a unified microscopic description for the different baryonic densities of the star. If the pressure functional is obt…
[Phys. Rev. C 94, 035804] Published Mon Sep 19, 2016
Power of two: Assessing the impact of a second measurement of the weak-charge form factor of ^{208} Pb
2016-09-15T10:00:00-04:00
Author(s): J. Piekarewicz, A. R. Linero, P. Giuliani, and E. Chicken
Background: Besides its intrinsic value as a fundamental nuclear-structure observable, the weak-charge density of ^{208}Pb—a quantity that is closely related to its neutron distribution—is of fundamental importance in constraining the equation of state of neutron-rich matter.
[Phys. Rev. C 94, 034316] Published Thu Sep 15, 2016
Measurement of transverse energy at midrapidity in Pb-Pb collisions at sqrt[s_{NN} ] =2.76 TeV
2016-09-15T10:00:00-04:00
Author(s): J. Adam
et al. (ALICE Collaboration)
We report the transverse energy (E_{T}) measured with ALICE at midrapidity in Pb-Pb collisions at sqrt[s_{NN}]=2.76 TeV as a function of centrality. The transverse energy was measured using identified single-particle tracks. The measurement was cross checked using the electromagnetic calorimeters an…
[Phys. Rev. C 94, 034903] Published Thu Sep 15, 2016
Muon capture on ^{3} H
2016-09-14T10:00:00-04:00
Author(s): J. Golak, R. Skibiński, H. Witała, K. Topolnicki, H. Kamada, A. Nogga, and L. E. Marcucci
The μ^{−}+^{3}H→ν_{μ}+n+n+n capture reaction is studied under full inclusion of final-state interactions. Predictions for the three-body breakup of ^{3}H are calculated with the AV18 potential, augmented by the Urbana IX three-nucleon force. Our results are based on the single-nucleon weak-current o…
[Phys. Rev. C 94, 034002] Published Wed Sep 14, 2016
Isoscalar E0, E1, E2, and E3 strength in ^{94} Mo
2016-09-14T10:00:00-04:00
Author(s): J. Button, Y.-W. Lui, D. H. Youngblood, X. Chen, G. Bonasera, and S. Shlomo
Isoscalar giant resonances in ^{94}Mo have been studied with inelastic scattering of 240 MeV α particles at small angles including 0°. All of the expected energy-weighted sum rule (EWSR) for the isoscalar E0 resonance was found (112%). A significant portion of the EWSR was found for the isoscalar E1…
[Phys. Rev. C 94, 034315] Published Wed Sep 14, 2016
Total kinetic energy release in ^{239} Pu(n,f) post-neutron emission from 0.5 to 50 MeV incident neutron energy
2016-09-14T10:00:00-04:00
Author(s): K. Meierbachtol, F. Tovesson, D. L. Duke, V. Geppert-Kleinrath, B. Manning, R. Meharchand, S. Mosby, and D. Shields
The average total kinetic energy (TKE[over ¯]) in ^{239}Pu(n,f) has been measured for incident neutron energies between 0.5 and 50 MeV. The experiment was performed at the Los Alamos Neutron Science Center (LANSCE) using the neutron time-of-flight technique, and the kinetic energy of fission fragmen…
[Phys. Rev. C 94, 034611] Published Wed Sep 14, 2016
^{8} Be+ ^{8} Be and ^{12} C+α breakup states in ^{16} O populated via the ^{13} C( ^{4} He,4α)n reaction
2016-09-13T10:00:00-04:00
Author(s): N. Curtis, S. Almaraz-Calderon, A. Aprahamian, N. I. Ashwood, M. Barr, B. Bucher, P. Copp, M. Couder, X. Fang, M. Freer, G. Goldring, F. Jung, S. R. Lesher, W. Lu, J. D. Malcolm, A. Roberts, W. P. Tan, C. Wheldon, and V. A. Ziman
The ^{13}C(^{4}He,4α)n breakup reaction has been studied at beam energies of 27.0, 27.5, and 28.0 MeV. A comparison with previous measurements of the ^{12}C(^{4}He,^{8}Be)^{8}Be excitation function and ^{12}C(^{16}O,4α)^{12}C breakup channel suggests the ^{8}Be_{gs}+^{8}Be_{gs} decay of ^{16}O is ob…
[Phys. Rev. C 94, 034313] Published Tue Sep 13, 2016