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Published: 2017-11-21T03:02:54+00:00
2017-11-20T10:00:00+00:00
Author(s): F. Q. Chen (陈芳祁), Q. B. Chen (陈启博), Y. A. Luo (罗延安), J. Meng (孟杰), and S. Q. Zhang (张双全)The pairing-plus-quadrupole Hamiltonian is diagonalized in a symmetry-restored basis, i.e., the triaxial quasiparticle states with angular momentum and particle number projections, and applied for chiral doublet bands in $^{128}\mathrm{Cs}$. The observed energy spectra and electromagnetic transition...
2017-11-20T10:00:00+00:00
Author(s): L. Huth, I. Tews, J. E. Lynn, and A. SchwenkChiral effective field theory is a framework to derive systematic nuclear interactions. It is based on the symmetries of quantum chromodynamics and includes long-range pion physics explicitly, while shorter-range physics is expanded in a general operator basis. The number of low-energy couplings at ...
2017-11-20T10:00:00+00:00
Author(s): S. N. More, S. K. Bogner, and R. J. FurnstahlBackground: Isolating nuclear structure properties from knock-out reactions in a process-independent manner requires a controlled factorization, which is always to some degree scale and scheme dependent. Understanding this dependence is important for robust extractions from experiment, to correctly ...
2017-11-20T10:00:00+00:00
Author(s): A. Dyhdalo, S. K. Bogner, and R. J. FurnstahlModern softened nucleon-nucleon interactions are well suited for perturbative many-body calculations, but a many-body power counting scheme is lacking. Estimates of diagrammatic contributions at finite density are important ingredients in such a scheme. Here we show how to make quantitative estimate...
2017-11-20T10:00:00+00:00
Author(s): Y. Jaganathen, R. M. Id Betan, N. Michel, W. Nazarewicz, and M. PłoszajczakBackground: The structure of weakly bound and unbound nuclei close to particle drip lines is one of the major science drivers of nuclear physics. A comprehensive understanding of these systems goes beyond the traditional configuration interaction approach formulated in the Hilbert space of localized...
2017-11-20T10:00:00+00:00
Author(s): J. Margueron, E. Khan, and F. GulminelliThe question of the competition between $\mathrm{Λ}$ and ${\mathrm{Ξ}}^{0,−}$ in the ground state of multistrange hypernuclei is addressed within a nonrelativistic density functional approach, partially constrained by ab initio calculations and experimental data. The exploration of the nuclear chart...
2017-11-20T10:00:00+00:00
Author(s): R. Kumar, M. Saxena, P. Doornenbal, A. Jhingan, A. Banerjee, R. K. Bhowmik, S. Dutt, R. Garg, C. Joshi, V. Mishra, P. J. Napiorkowski, S. Prajapati, P.-A. Söderström, N. Kumar, and H.-J. WollersheimIn a series of Coulomb excitation experiments the first excited ${2}^{+}$ states in semimagic $^{112,116,118,120,122,124}\mathrm{Sn}$ isotopes were excited using a $^{58}\mathrm{Ni}$ beam at safe Coulomb energy. The $B(E2$; ${0}^{+}→{2}^{+})$ values were determined with high precision $(∼3%)$ relati...
2017-11-20T10:00:00+00:00
Author(s): A. Adahchour and P. DescouvemontWe investigate the $^{26}\mathrm{O}$ unbound nucleus in a $^{24}\mathrm{O}+n+n$ three-body model. We use the hyperspherical formalism, which relies only on $^{24}\mathrm{O}+n$ and $n+n$ interactions. As $^{26}\mathrm{O}$ is unbound, even in its ground state, the long-range behavior of the wave funct...
2017-11-20T10:00:00+00:00
Author(s): A. A. Raduta, R. Poenaru, and L. Gr. IxaruA unitary description for wobbling motion in even-even and even-odd nuclei is presented. In both cases compact formulas for wobbling frequencies are derived. The accuracy of the harmonic approximation is studied for the yrast as well as for the excited bands in the even-even case. Important results ...
2017-11-20T10:00:00+00:00
Author(s): Jose Luis Rodríguez-Sánchez, Jean-Christophe David, Davide Mancusi, Alain Boudard, Joseph Cugnon, and Sylvie LerayThe prediction of one-nucleon-removal cross sections by the Liège intranuclear-cascade model has been improved using a refined description of the matter and energy densities in the nuclear surface. Hartree-Fock-Bogoliubov calculations with the Skyrme interaction are used to obtain a more realistic d...
2017-11-20T10:00:00+00:00
Author(s): Zhi Wang, Chang Xu, Zhongzhou Ren, and Chao GaoThe free nucleon emission from intermediate-energy nucleus-nucleus collisions is proposed as a possible probe to study the high-momentum tail (HMT) in nucleon momentum distribution of nuclei. Within the framework of the isospin-dependent Boltzmann-Uehling-Uhlenbeck (IBUU) transport model, the effect...
2017-11-20T10:00:00+00:00
Author(s): P. Marini, L. Mathieu, M. Aïche, G. Belier, S. Czajkowski, Q. Ducasse, B. Jurado, G. Kessedjian, J. Matarranz, A. Plompen, P. Salvador-Castiñeira, J. Taieb, and I. TsekhanovichRelative values of the neutron-induced fission cross section $σ(n,f)$ of $^{242}\mathrm{Pu}$ have been measured with respect to the standard $^{1}\mathrm{H}(n,p)$ elastic scattering cross section, at average energies of 1.0, 1.4, and $1.9\phantom{\rule{4pt}{0ex}}\mathrm{MeV}$. The measurements are p...
2017-11-20T10:00:00+00:00
Author(s): K. Kapoor, S. Verma, P. Sharma, R. Mahajan, N. Kaur, G. Kaur, B. R. Behera, K. P. Singh, A. Kumar, H. Singh, R. Dubey, N. Saneesh, A. Jhingan, P. Sugathan, G. Mohanto, B. K. Nayak, A. Saxena, H. P. Sharma, S. K. Chamoli, I. Mukul, and V. SinghPre- and post-scission $α$-particle multiplicities have been measured for the reaction $^{16}O+^{194}Pt$ at 98.4 MeV forming $^{210}Rn$ compound nucleus. $α$ particles were measured at various angles in coincidence with the fission fragments. Moving source technique was used to extract the pre- and ...
2017-11-20T10:00:00+00:00
Author(s): J. M. Alarcón and C. WeissWe propose a method for calculating the nucleon form factors (FFs) of $G$-parity-even operators by combining chiral effective field theory ($χ\mathrm{EFT}$) and dispersion analysis. The FFs are expressed as dispersive integrals over the two-pion cut at $t>4{M}_{π}^{2}$. The spectral functions are...
2017-11-20T10:00:00+00:00
Author(s): N. G. Antoniou, F. K. Diakonos, and A. S. KapoyannisIn the dynamics of the QCD critical point, the net-baryon fluid, linked to the slow component of the order parameter, relaxes to a three-dimensional Ising system in equilibrium. An analytical study of shear and bulk viscosity, with constraints imposed by the dynamics of the critical net-baryon fluid...
2017-11-17T10:00:00+00:00
Author(s): S. Valenta, B. Baramsai, T. A. Bredeweg, A. Couture, A. Chyzh, M. Jandel, J. Kroll, M. Krtička, G. E. Mitchell, J. M. O'Donnell, G. Rusev, J. L. Ullmann, and C. L. WalkerThe $γ$ rays following radiative neutron capture on $^{161,163}\mathrm{Dy}$ targets were measured with the highly segmented $γ$-ray calorimeter Detector for Advanced Neutron Capture Experiments at the Los Alamos Neutron Science Center. The $γ$-ray energy spectra for different multiplicities were gat...
2017-11-16T10:00:00+00:00
Author(s): A. J. Miller, K. Minamisono, D. M. Rossi, R. Beerwerth, B. A. Brown, S. Fritzsche, D. Garand, A. Klose, Y. Liu, B. Maaß, P. F. Mantica, P. Müller, W. Nörtershäuser, M. R. Pearson, and C. SumithrarachchiThe hyperfine coupling constants of neutron deficient $^{53}\mathrm{Fe}$ were deduced from the atomic hyperfine spectrum of the $3{d}^{6}4{s}^{2}{\phantom{\rule{4pt}{0ex}}}^{5}{D}_{4}\phantom{\rule{4pt}{0ex}}↔\phantom{\rule{4pt}{0ex}}3{d}^{6}4s4p{\phantom{\rule{4pt}{0ex}}}^{5}{F}_{5}$ transition, me...
2017-11-16T10:00:00+00:00
Author(s): D. W. Bardayan, K. A. Chipps, S. Ahn, J. C. Blackmon, S. Carmichael, U. Greife, K. L. Jones, J. José, A. Kontos, R. L. Kozub, L. Linhardt, B. Manning, M. Matoš, P. D. O'Malley, S. Ota, S. D. Pain, W. A. Peters, S. T. Pittman, A. Sachs, K. T. Schmitt, M. S. Smith, and P. ThompsonThe Jet Experiments in Nuclear Structure and Astrophysics (JENSA) gas-jet target was used to perform spectroscopic studies of $^{20}\mathrm{Ne}+p$ reactions. Levels in $^{19}\mathrm{Ne}$ were probed via the $^{20}\mathrm{Ne}(p,d)^{19}\mathrm{Ne}$ reaction to constrain the astrophysical rate of the $...
2017-11-15T10:00:00+00:00
Author(s): Takayuki Miyagi, Takashi Abe, Ryoji Okamoto, and Takaharu OtsukaIn the earlier unitary-model-operator approach (UMOA), one-body correlations have been taken into account approximately by the diagonalization of unitary-transformed Hamiltonians in the $0\text{p}0\text{h}$ and $1\text{p}1\text{h}$ space. With this prescription, the dependence of the harmonic-oscill...
2017-11-15T10:00:00+00:00
Author(s): Han-Kui Wang, S. K. Ghorui, Kazunari Kaneko, Yang Sun, and Z. H. LiThe cross-shell excitations in the mass-130 region are determined by the behavior of the single-particle (or single-hole) states around the doubly magic nucleus $^{132}\mathrm{Sn}$ and the size of the energy gaps at $N=82$ and/or $Z=50$. The present work reports on the results from large-scale shell...
2017-11-15T10:00:00+00:00
Author(s): Sandeep Chatterjee, Debadeepti Mishra, Bedangadas Mohanty, and Subhasis SamantaWe investigate systematics of the freezeout surface in heavy ion collisions due to the hadron spectrum. The role of suspected resonance states that are yet to be confirmed experimentally in identifying the freezeout surface has been investigated. We have studied two different freezeout schemes: a un...
2017-11-15T10:00:00+00:00
Author(s): L. M. Abreu and E. S. NeryIn this work we investigate the finite-size effects on the phase structure of the Walecka model within the framework of a generalized $ζ$-function, focusing on the influence of temperature as well as the number and length of compactified spatial dimensions. Here we concentrate on the situation of la...
2017-11-15T10:00:00+00:00
Author(s): D. Siemens, V. Bernard, E. Epelbaum, A. M. Gasparyan, H. Krebs, and Ulf-G. MeißnerWe extend our previous study of elastic pion-nucleon scattering in the framework of chiral perturbation theory by performing a combined analysis of the reactions $πN→πN$ and $πN→ππN$. The calculation is carried out to fourth order in the chiral expansion using the heavy-baryon approach and the covar...
2017-11-15T10:00:00+00:00
Author(s): A. Shor, M. Tessler, A. Plompen, A. Arenshtam, O. Aviv, D. Berkovits, M. Brandis, Y. Eisen, I. Eliyahu, G. Feinberg, M. Friedman, S. Halfon, M. Hult, B. Kaizer, D. Kijel, A. Krása, A. Kreisel, T. Palchan, M. Paul, A. Perry, I. Silverman, S. Vaintraub, and L. WeissmanBismuth capture of neutrons is the termination point of the $s$-process cycle of nucleosynthesis in stellar environments. A new measurement is reported here for neutron activation of bismuth with an intense quasi-Maxwellian neutron source at $kT∼30\phantom{\rule{0.16em}{0ex}}\mathrm{keV}$. The measu...
2017-11-15T10:00:00+00:00
Author(s): M. D. Jones, T. Baumann, J. Brett, J. Bullaro, P. A. DeYoung, J. E. Finck, N. Frank, K. Hammerton, J. Hinnefeld, Z. Kohley, A. N. Kuchera, J. Pereira, A. Rabeh, J. K. Smith, A. Spyrou, S. L. Stephenson, K. Stiefel, M. Tuttle-Timm, R. G. T. Zegers, and M. Thoennessen2017-11-14T10:00:00+00:00
Author(s): J. Hoppe, C. Drischler, R. J. Furnstahl, K. Hebeler, and A. SchwenkWe perform a comprehensive Weinberg eigenvalue analysis of a representative set of modern nucleon-nucleon interactions derived within chiral effective field theory. Our set contains local, semilocal, and nonlocal potentials, developed by Gezerlis et al. [Phys. Rev. Lett. 111, 032501 (2013)], Epelbau...
2017-11-14T10:00:00+00:00
Author(s): Jie Pu, Zhen Zhang, and Lie-Wen ChenBackground: Nuclear matter fourth-order symmetry energy ${E}_{\text{sym,4}}(ρ)$ may significantly influence the properties of neutron stars such as the core-crust transition density and pressure as well as the proton fraction at high densities. The magnitude of ${E}_{\text{sym,4}}(ρ)$ is, however, l...
2017-11-14T10:00:00+00:00
Author(s): Nirbhay K. Behera, Sadhana Dash, Bharati Naik, Basanta K. Nandi, and Tanmay PaniThe charged-particle multiplicity distribution and the transverse-energy distribution measured in heavy-ion collisions at top RHIC and LHC energies are described using the two-component model approach based on a convolution of the Monte Carlo Glauber model with the Weibull model for particle product...
2017-11-13T10:00:00+00:00
Author(s): S. Quan, W. P. Liu, Z. P. Li, and M. S. SmithBackground: Predictions of the spectroscopic properties of low-lying states are critical for nuclear structure studies but are problematic for nuclei with an odd nucleon due to the interplay of the unpaired single particle with nuclear collective degrees of freedom.
2017-11-13T10:00:00+00:00
Author(s): C. F. Jiao, J. Engel, and J. D. HoltWe use the generator-coordinate method (GCM) with realistic shell-model interactions to closely approximate full shell-model calculations of the matrix elements for the neutrinoless double-$β$ decay of $^{48}\mathrm{Ca}$, $^{76}\mathrm{Ge}$, and $^{82}\mathrm{Se}$. We work in one major shell for the...
2017-11-13T10:00:00+00:00
Author(s): Adam Olszewski and Wojciech BroniowskiWe argue that statistical data analysis of two-particle longitudinal correlations in ultrarelativistic heavy-ion collisions may be efficiently carried out with the technique of partial covariance. In this method, the spurious event-by-event fluctuations due to imprecise centrality determination are ...
2017-11-13T10:00:00+00:00
Author(s): L. Adamczyk et al. (STAR Collaboration)The STAR Collaboration reports on the photoproduction of ${π}^{+}{π}^{−}$ pairs in gold-gold collisions at a center-of-mass energy of 200 GeV/nucleon-pair. These pion pairs are produced when a nearly real photon emitted by one ion scatters from the other ion.
2017-11-13T10:00:00+00:00
Author(s): Adam Bzdak and Volker KochThe dependence of multiproton correlation functions and cumulants on the acceptance in rapidity and transverse momentum is studied. We find that the preliminary data of various cumulant ratios are consistent, within errors, with rapidity and transverse momentum-independent correlation functions. How...
2017-11-13T10:00:00+00:00
Author(s): Victor T. Voronchev, Yasuyuki Nakao, and Yukinobu WatanabeContinuing the study of suprathermal effects in the solar core [Phys. Rev. C 91, 028801 (2015); J. Phys. G 44, 045202 (2017)], we examine the roles of different $pp$ chain processes generating fast $α$ particles as trigger for suprathermal $\mathrm{B}(α,p)\mathrm{A}$ reactions neglected in standard ...
2017-11-13T10:00:00+00:00
Author(s): Zidu Lin and C. J. HorowitzCore collapse supernova simulations can be sensitive to neutrino interactions near the neutrinosphere. This is the surface of last scattering. We model the neutrinosphere region as a warm unitary gas of neutrons. A unitary gas is a low density system of particles with large scattering lengths. We ca...
2017-11-10T10:00:00+00:00
Author(s): W. Zhang (张炜) and Y. F. Niu (牛一斐)The shape evolutions of the pear-shaped nuclei $^{224}\mathrm{Ra}$ and even-even $^{144–154}\mathrm{Ba}$ with temperature are investigated by the finite-temperature relativistic mean field theory with the treatment of pairing correlations by the BCS approach. The free energy surfaces as well as the ...
2017-11-10T10:00:00+00:00
Author(s): K. P. Hickerson et al. (UCNA Collaboration)2017-11-09T10:00:00+00:00
Author(s): Kenichi YoshidaThe occurrence of low-lying charge-exchange non-spin-flip dipole modes below the giant resonance in neutron-rich nuclei is predicted on the basis of nuclear density functional theory. The ground and excited states are described within the framework of the self-consistent Hartree–Fock–Bogoliubov theo...
2017-11-09T10:00:00+00:00
Author(s): Kanishka Sharma, Gudveen Sawhney, and Manoj K. SharmaBased on the preformed cluster model, we have carried out a comprehensive theoretical study on the decay paths of ground state actinide and transactinide nuclei, specifically from $^{232}\mathrm{U}$ to $^{264}\mathrm{Hs}$ exhibiting the phenomenon of spontaneous fission (SF). This is an extension of...
2017-11-08T10:00:00+00:00
Author(s): M. Vandebrouck et al. (R3B collaboration)Background: Odd-odd nuclei, around doubly closed shells, have been extensively used to study proton-neutron interactions. However, the evolution of these interactions as a function of the binding energy, ultimately when nuclei become unbound, is poorly known. The $^{26}\mathrm{F}$ nucleus, composed ...
2017-11-08T10:00:00+00:00
Author(s): R. Lisboa, P. Alberto, B. V. Carlson, and M. MalheiroWe present finite-temperature Dirac-Hartree-Bogoliubov (FTDHB) calculations for the tin isotope chain to study the dependence of pseudospin on the nuclear temperature. In the FTDHB calculation, the density dependence of the self-consistent relativistic mean fields, the pairing, and the vapor phase t...
2017-11-08T10:00:00+00:00
Author(s): P. Adsley, J. W. Brümmer, K. C. W. Li, D. J. Marín-Lámbarri, N. Y. Kheswa, L. M. Donaldson, R. Neveling, P. Papka, L. Pellegri, V. Pesudo, L. C. Pool, F. D. Smit, and J. J. van ZylBackground: The $^{22}\mathrm{Ne}$($α,n$)$^{25}\mathrm{Mg}$ reaction is one of the neutron sources for the $s$ process in massive stars. The properties of levels in $^{26}\mathrm{Mg}$ above the $α$-particle threshold control the strengths of the $^{22}\mathrm{Ne}$($α,n$)$^{25}\mathrm{Mg}$ and $^{22}...
2017-11-07T10:00:00+00:00
Author(s): J. Kristiano, S. Clymton, and T. MartWe propose the use of a pure spin-3/2 propagator in the $(3/2,0)⊕(0,3/2)$ representation in particle and nuclear physics. To formulate the propagator in a covariant form we use the antisymmetric tensor spinor representation and we consider the $\mathrm{Δ}$ resonance contribution to the elastic $πN$ ...
2017-11-07T10:00:00+00:00
Author(s): Jinniu Hu and Hong ShenThe single-${\mathrm{Ξ}}^{−}$ hypernuclei are studied using a quark mean-field model. At the quark level, the ${\mathrm{Ξ}}^{−}$ hyperon is composed of one $d$ quark and two $s$ quarks, which are confined by the harmonic oscillator potentials. In the case of hadrons, the baryons interact with each o...
2017-11-06T10:00:00+00:00
Author(s): M. P. Reiter, K. G. Leach, O. M. Drozdowski, S. R. Stroberg, J. D. Holt, C. Andreoiu, C. Babcock, B. Barquest, M. Brodeur, A. Finlay, M. Foster, A. T. Gallant, G. Gwinner, R. Klawitter, B. Kootte, A. A. Kwiatkowski, Y. Lan, D. Lascar, E. Leistenschneider, A. Lennarz, S. Paul, R. Steinbrügge, R. I. Thompson, M. Wieser, and J. DillingA direct ${Q}_{\mathrm{EC}}$-value measurement of the superallowed ${β}^{+}$ emitter $^{22}\mathrm{Mg}$ was performed using TRIUMF's Ion Trap for Atomic and Nuclear Science. The direct ground-state to ground-state atomic mass difference between $^{22}\mathrm{Mg}$ and $^{22}\mathrm{Na}$ was determine...
2017-11-06T10:00:00+00:00
Author(s): Bo-Chao Liu and Shao-Fei ChenIn this paper, we investigate the $γp→pηη$ reaction within an effective Lagrangian approach and isobar model. We consider the contributions from the intermediate ${N}^{*}(1535)$, ${N}^{*}(1650)$, ${N}^{*}(1710)$, and ${N}^{*}(1720)$ isobars which finally decay to the $Nη$ state. It is found that the...
2017-11-06T10:00:00+00:00
Author(s): S. Y. Xia, H. Tao, Y. Lu, Z. P. Li, T. Nikšić, and D. VretenarQuadrupole and octupole deformation energy surfaces, low-energy excitation spectra, and transition rates in 14 isotopic chains: Xe, Ba, Ce, Nd, Sm, Gd, Rn, Ra, Th, U, Pu, Cm, Cf, and Fm, are systematically analyzed using a theoretical framework based on a quadrupole-octupole collective Hamiltonian (...
2017-11-06T10:00:00+00:00
Author(s): A. J. R. Puckett et al.Background: Interest in the behavior of nucleon electromagnetic form factors at large momentum transfers has steadily increased since the discovery, using polarization observables, of the rapid decrease of the ratio ${G}_{E}^{p}/{G}_{M}^{p}$ of the proton's electric and magnetic form factors for mom...
2017-11-03T10:00:00+00:00
Author(s): A. Belhout, S. Ouichaoui, H. Beaumevieille, A. Bouchemha, G. Bogaert, S. Fortier, J. Kiener, A. Lefebvre-Schuhl, J. M. Maison, L. Rosier, J. Rotbard, V. Tatischeff, J. P. Thibaud, and J. VernotteThe angular distributions of $^{8}\mathrm{Be}$ states in the excitation energy region ${E}_{x}∼(16.5\text{–}18.2)$ MeV produced in the $^{7}\mathrm{Li}(^{3}\mathrm{He},d)^{8}\mathrm{Be}$ proton transfer reaction have been measured at the Orsay $14.8−\mathrm{MV}$ tandem accelerator for $^{3}\mathrm{H...
2017-11-03T10:00:00+00:00
Author(s): X. Du, M. He, and R. RappThe production of ground-state and excited bottomonia in ultrarelativistic heavy-ion collisions is investigated within a kinetic-rate equation approach including regeneration. We augment our previous calculations by an improved treatment of medium effects, with temperature-dependent binding energies...
2017-11-03T10:00:00+00:00
Author(s): Claude A. PruneauThis paper discusses the impact of finite particle losses associated with instrumental effects in measurements of moments of produced multiplicities with the identity method towards the evaluation of fluctuation measures such as ${ν}_{\mathrm{dyn}}$. One finds that the identity method remains applic...
2017-11-03T10:00:00+00:00
Author(s): A. V. Anisovich, V. Burkert, N. Compton, K. Hicks, F. J. Klein, E. Klempt, V. A. Nikonov, A. M. Sandorfi, A. V. Sarantsev, and U. ThomaThe helicity amplitudes for the photoproduction of nucleon resonances excited from neutrons are determined in the Bonn-Gatchina coupled-channel partial wave analysis. Upper limits for the decay fraction of the pentaquark candidate $N(1685)→{K}^{0}\mathrm{Λ}$ are given. The electric and magnetic coup...
2017-11-02T10:00:00+00:00
Author(s): A. O. Macchiavelli, H. L. Crawford, C. M. Campbell, R. M. Clark, M. Cromaz, P. Fallon, M. D. Jones, I. Y. Lee, A. L. Richard, and M. SalatheSpectroscopic factors, extracted from one-neutron knockout and Coulomb dissociation reactions, for transitions from the ground state of $^{33}\mathrm{Mg}$ to the ground-state rotational band in $^{32}\mathrm{Mg}$, and from $^{32}\mathrm{Mg}$ to low-lying negative-parity states in $^{31}\mathrm{Mg}$,...
2017-11-02T10:00:00+00:00
Author(s): Dmitry BorisyukI study two-photon contribution to the elastic lepton-proton scattering, associated with $σ$ meson exchange, with special attention paid to the low-${Q}^{2}$ region. It is shown that the corresponding amplitude grows sharply but remains finite at ${Q}^{2}→0$. The analytical formula for the amplitude...
2017-11-01T10:00:00+00:00
Author(s): P. FantoThe finite-temperature Hartree-Fock-Bogoliubov (HFB) approximation often breaks symmetries of the underlying many-body Hamiltonian. Restricting the calculation of the HFB partition function to a subspace with good quantum numbers through projection after variation restores some of the correlations l...
2017-11-01T10:00:00+00:00
Author(s): Omar Benhar and Alessandro LovatoAn updated and improved version of the effective interaction based on the Argonne-Urbana nuclear Hamiltonian, derived using the formalism of correlated basis functions and the cluster expansion technique, is employed to obtain a number of properties of cold nuclear matter at arbitrary neutron excess...
2017-11-01T10:00:00+00:00
Author(s): Xiaopeng Zhang, Jiarui Zhao, Dawei Yuan, Changbo Fu, Jie Bao, Liming Chen, Jianjun He, Long Hou, Liang Li, Yanfei Li, Yutong Li, Guoqian Liao, Yongjoo Rhee, Yang Sun, Shiwei Xu, Gang Zhao, Baojun Zhu, Jianqiang Zhu, Zhe Zhang, and Jie ZhangNuclear fusion reactions are the most important processes in nature to power stars and produce new elements, and lie at the center of the understanding of nucleosynthesis in the universe. It is critically important to study the reactions in full plasma environments that are close to true astrophysic...
2017-10-30T10:00:00+00:00
Author(s): Kouhei Washiyama and Takashi NakatsukasaBackground: The five-dimensional quadrupole collective model based on energy density functionals (EDFs) has often been employed to treat long-range correlations associated with shape fluctuations in nuclei. Our goal is to derive the collective inertial functions in the collective Hamiltonian by the ...
2017-10-30T10:00:00+00:00
Author(s): Kazuyuki SekizawaMultinucleon transfer processes in low-energy heavy ion reactions have attracted increasing interest in recent years aiming at the production of new neutron-rich isotopes. Clearly, it is an imperative task to further develop understanding of underlying reaction mechanisms to lead experiments to succ...
2017-10-30T10:00:00+00:00
Author(s): K. P. Hickerson et al. (UCNA Collaboration)Precision measurements of free-neutron $β$ decay have been used to precisely constrain our understanding of the weak interaction. However, the neutron Fierz interference term ${b}_{n}$, which is particularly sensitive to beyond-standard-model tensor currents at the TeV scale, has thus far eluded mea...
2017-10-30T10:00:00+00:00
Author(s): W. Urban et al.Excited states in $^{98}\mathrm{Y}$, populated in neutron-induced fission of $^{235}\mathrm{U}$ and in spontaneous fission of $^{248}\mathrm{Cm}$ and $^{252}\mathrm{Cf}$, have been studied by means of $γ$ spectroscopy using the Lohengrin fission-fragment separator at ILL Grenoble and the EXILL, Euro...
2017-10-30T10:00:00+00:00
Author(s): Deepak Kumar and Moumita MaitiBackground: It is understood from the recent experimental studies that prompt/resonant breakup, and transfer followed by breakup in the weakly bound $^{6,7}\mathrm{Li}$-induced reactions play a significant role in the complete-incomplete fusion (CF-ICF), suppression/enhancement in the fusion cross s...
2017-10-30T10:00:00+00:00
Author(s): M. R. Dunlop et al.A high-precision half-life measurement for the superallowed Fermi ${β}^{+}$ emitter $^{22}\mathrm{Mg}$ was performed at the TRIUMF-ISAC facility using a $4π$ proportional gas counter. The result of ${T}_{1/2}=3.87400±0.00079$ s is a factor of 3 more precise than the previously adopted world average ...
2017-10-27T10:00:00+00:00
Author(s): N. A. Althubiti et al. (ISOLTRAP Collaboration)Direct mass measurements of the low-spin $3/{2}^{−}$ and high-spin $13/{2}^{+}$ states in the neutron-deficient isotopes $^{195}\mathrm{Po}$ and $^{197}\mathrm{Po}$ were performed with the Penning-trap mass spectrometer ISOLTRAP at ISOLDE-CERN. These measurements allow the determination of the excit...
2017-10-27T10:00:00+00:00
Author(s): Niu Wan, Chang Xu, Zhongzhou Ren, and Jie LiuWithin the density-dependent cluster model (DDCM), the decay half-lives of 22 cluster emitters are calculated by using experimental decay energies. Based on our previous study on cluster radioactivity [Phys. Rev. C 90, 064310 (2014)], not only the quadratic symmetry energy ${E}_{2}({ρ}_{0})$ and its...
2017-10-27T10:00:00+00:00
Author(s): B. Elman, A. Gade, D. Weisshaar, D. Barofsky, D. Bazin, P. C. Bender, M. Bowry, M. Hjorth-Jensen, K. W. Kemper, S. Lipschutz, E. Lunderberg, N. Sachmpazidi, N. Terpstra, W. B. Walters, A. Westerberg, S. J. Williams, and K. WimmerWe report $B(E2;{0}_{1}^{+}→{2}_{n}^{+})$ strengths for the neutron-rich $^{88,90}\mathrm{Kr}$ and $^{86}\mathrm{Se}$ isotopes from intermediate-energy Coulomb excitation. The electric quadrupole transition strengths to the first ${2}^{+}$ states complete, with considerably improved uncertainties, t...
2017-10-27T10:00:00+00:00
Author(s): S. A. Kuvin, J. Belarge, L. T. Baby, J. Baker, I. Wiedenhöver, P. Höflich, A. Volya, J. C. Blackmon, C. M. Deibel, H. E. Gardiner, J. Lai, L. E. Linhardt, K. T. Macon, B. C. Rasco, N. Quails, K. Colbert, D. L. Gay, and N. KeeleyBackground: The $^{17}\mathrm{F}(p,γ)^{18}\mathrm{Ne}$ reaction is part of the astrophysical “hot CNO” cycles that are important in astrophysical environments like novas. Its thermal reaction rate is low owing to the relatively high energy of the resonances and therefore is dominated by direct, nonr...
2017-10-26T10:00:00+00:00
Author(s): S. X. Nakamura, H. Kamano, and T. IshikawaWe develop a reaction model for $η$ photoproduction off the deuteron ($γd→ηpn$) and study the reaction at a special kinematics, where the photon beam energy is $∼0.94$ GeV and the scattered proton is detected at $∼{0}^{∘}$, for the purpose of determining the $η$-nucleon scattering length (${a}_{ηN}$...
2017-10-26T10:00:00+00:00
Author(s): Tomohiro Oishi, Markus Kortelainen, and Alessandro PastoreSensitivity of two-proton emitting decay to nuclear pairing correlation is discussed within a time-dependent three-body model. We focus on the $^{6}\mathrm{Be}$ nucleus assuming $α+p+p$ configuration, and its decay process is described as a time evolution of the three-body resonance state. For a pro...
2017-10-26T10:00:00+00:00
Author(s): S. Lalkovski, E. A. Stefanova, S. Kisyov, A. Korichi, D. Bazzacco, M. Bergström, A. Görgen, B. Herskind, H. Hübel, A. Jansen, T. L. Khoo, T. Kutsarova, A. Lopez-Martens, A. Minkova, Zs. Podolyák, G. Schönwasser, and O. Yordanov$^{111}\mathrm{Ag}$ and $^{113}\mathrm{Ag}$ were produced in induced fission reaction, where yrast and near-yrast states were populated. To interpret the new data the Interacting Boson-Fermion Model was used. A good agreement with the experimental data is achieved, suggesting that the two Ag nuclei ...
2017-10-26T10:00:00+00:00
Author(s): A. B. Garnsworthy, M. Bowry, B. Olaizola, J. D. Holt, S. R. Stroberg, S. Cruz, S. Georges, G. Hackman, A. D. MacLean, J. Measures, H. P. Patel, C. J. Pearson, and C. E. SvenssonThe GRIFFIN spectrometer at TRIUMF-ISAC has been used to study excited states and transitions in $^{50}\mathrm{Sc}$ following the $β$ decay of $^{50}\mathrm{Ca}$. Branching ratios were determined from the measured $γ$-ray intensities, and angular correlations of $γ$ rays have been used to firmly ass...
2017-10-26T10:00:00+00:00
Author(s): P. Becker, D. Davesne, J. Meyer, J. Navarro, and A. PastoreWe present the development of the extended Skyrme N2LO pseudopotential in the case of spherical even-even nuclei calculations. The energy density functional is first presented. Then we derive the mean-field equations and discuss the numerical method used to solve the resulting fourth-order different...
2017-10-26T10:00:00+00:00
Author(s): S. Q. Guo, Y. Gao, J. Q. Li, and H. F. ZhangThe investigation of the characteristics of low-energy heavy ion reactions covering both fusion and quasifission is carried out within the dinuclear system (DNS) concept, which is developed to include the deformation variables of fragments in addition to the mass numbers of the fragments, so that th...
2017-10-26T10:00:00+00:00
Author(s): Krishichayan, M. Bhike, W. Tornow, A. P. Tonchev, and T. KawanoThe cross section for the $^{238}\mathrm{U}(n,2n)^{237}\mathrm{U}$ reaction has been measured in the incident neutron energy range from 6.5 to 14.8 MeV in small energy steps using an activation technique. Monoenergetic neutron beams were produced via the $^{2}\mathrm{H}(d,n)^{3}\mathrm{He}$ and $^{3...
2017-10-26T10:00:00+00:00
Author(s): Joanna E. SobczykI present a discussion of the models of nuclear effects used to describe the inclusive electron-nucleus scattering in the quasielastic (QE) peak region, aiming to compare them and to draw conclusions about their reliability when applied in neutrino-nucleus interactions. A basic motivation is to redu...
2017-10-26T10:00:00+00:00
Author(s): S. Goudarzi and H. R. Moshfegh2017-10-25T10:00:00+00:00
Author(s): Ronen Weiss and Nir BarneaContact formalism, a useful tool for analyzing short-range correlations, is generalized here for systems with coupled channels, such as in nuclear physics. The relevant asymptotic form is presented and contact matrices are defined. Generally, for the case of two coupled channels, two two-body functi...
2017-10-25T10:00:00+00:00
Author(s): Matteo Vorabbi, Paolo Finelli, and Carlotta GiustiBackground: Elastic scattering is probably the main event in the interactions of nucleons with nuclei. Even if this process has been extensively studied in the past years, a consistent description, i.e., starting from microscopic two- and many-body forces connected by the same symmetries and princip...
2017-10-25T10:00:00+00:00
Author(s): A. GiannatiempoThe $^{98}\mathrm{Ru}$ structure has been investigated in the framework of the IBA-2 model, extending previous works to exploit the whole set of new spectroscopic data. The occurrence of states of mixed symmetry character in the proton and neutron degrees of freedom is of prominent importance in enl...
2017-10-25T10:00:00+00:00
Author(s): Weiyao Ke, J. Scott Moreland, Jonah E. Bernhard, and Steffen A. BassWe study the initial three-dimensional spatial configuration of the quark-gluon plasma (QGP) produced in relativistic heavy-ion collisions using centrality and pseudorapidity-dependent measurements of the medium's charged particle density and two-particle correlations. A cumulant-generating function...
2017-10-25T10:00:00+00:00
Author(s): E. Kurban and M. C. GüçlüWe calculate the total cross sections and probabilities of electromagnetic productions of electron, muon, and tauon pairs simultaneously. At the CERN Large Hadron Collider (LHC), the available electromagnetic energy is sufficient to produce all kinds of leptons coherently. The masses of muons and ta...
2017-10-25T10:00:00+00:00
Author(s): Yao Zhang, Jingbo Zhang, Tong Chen, Desheng Liu, and Yun ChaoUsing a multiphase transport (AMPT) model, we study the dependence on the specific shear viscosity of the transverse momentum spectra, Hanbury Brown–Twiss parameters, and elliptic flow with a temperature-independent shear viscous approach. The shear viscosity strengthens the transverse pressure grad...
2017-10-24T10:00:00+00:00
Author(s): B. Nedaee-Shakarab, M. Saadati-Niari, and F. ZolfagharpourCoherent superposition of nuclear states in tripod systems using three x-ray laser pulses is investigated theoretically. The laser pulses transfer the population from one ground state to an arbitrary superposition of other ground states using coincident pulses and stimulated Raman adiabatic passage ...
2017-10-24T10:00:00+00:00
Author(s): Zhimin Wang, Huaiyong Bai, Luyu Zhang, Haoyu Jiang, Yi Lu, Jinxiang Chen, Guohui Zhang, Yu. M. Gledenov, M. V. Sedysheva, and G. KhuukhenkhuuCross sections of the $^{10}\mathrm{B}(n,t2α)$ three-body reaction were measured at ${E}_{n}=4.0,4.5$, and 5.0 MeV using a twin gridded ionization chamber and a thin-film $^{10}\mathrm{B}$ sample. The present paper is the first part of the work. The experimental spectrum of the $^{10}\mathrm{B}(n,t2...
2017-10-24T10:00:00+00:00
Author(s): Zhimin Wang, Huaiyong Bai, Luyu Zhang, Haoyu Jiang, Yi Lu, Jinxiang Chen, Guohui Zhang, Yu. M. Gledenov, M. V. Sedysheva, and G. KhuukhenkhuuCross sections of the $^{10}\mathrm{B}(n,t2α)$ three-body reaction were measured at ${E}_{n}=4.0$, 4.5, and 5.0 MeV using a twin gridded ionization chamber and a thin-film $^{10}\mathrm{B}$ sample. The present paper is the second part of the work. A digital data-acquisition system was developed for ...
2017-10-24T10:00:00+00:00
Author(s): Yu Ninomiya, Wolfgang Bentz, and Ian C. CloëtWe present a covariant formulation and model calculations of the leading-twist time-reversal even transverse-momentum-dependent quark distribution functions (TMDs) for a spin-one target. Emphasis is placed on a description of these three-dimensional distribution functions which is independent of any...
2017-10-23T10:00:00+00:00
Author(s): V. dos S. Ferreira, F. Krmpotić, C. A. Barbero, and A. R. SamanaThe one-quasiparticle random-phase approximation (one-QRPA) method is used to describe simultaneously both double-$β$-decay modes, giving special attention to the partial restoration of spin-isospin $\text{SU}(4)$ symmetry. To implement this restoration and to fix the model parameters, we resort to ...
2017-10-23T10:00:00+00:00
Author(s): D. Lascar et al.We present the results of precision mass measurements of neutron-rich cadmium isotopes. These nuclei approach the $N=82$ closed neutron shell and are important to nuclear structure as they lie near doubly magic $^{132}\mathrm{Sn}$ on the chart of nuclides. Of particular note is the clear identificat...
2017-10-23T10:00:00+00:00
Author(s): G. J. Farooq-Smith, A. R. Vernon, J. Billowes, C. L. Binnersley, M. L. Bissell, T. E. Cocolios, T. Day Goodacre, R. P. de Groote, K. T. Flanagan, S. Franchoo, R. F. Garcia Ruiz, W. Gins, K. M. Lynch, B. A. Marsh, G. Neyens, S. Rothe, H. H. Stroke, S. G. Wilkins, and X. F. YangMagnetic-dipole and electric-quadrupole moments for $^{65,67,69,75,79\text{–}82}\mathrm{Ga}$ are reported using the Collinear Resonance Ionization Spectroscopy (CRIS) technique at the ISOLDE facility, CERN. The moments of $^{65}\mathrm{Ga}$ have been measured for the first time: $μ=+1.775(3)\phantom...
2017-10-23T10:00:00+00:00
Author(s): Junhua Luo, Li Jiang, and Suyuan LiThe $^{153}\mathrm{Eu}(n,2n)^{152}\mathrm{Eu}^{\mathrm{m}1,\mathrm{m}2,g}$ cross section was measured by means of the activation technique at three neutron energies in the range 13–15 MeV. The quasimonoenergetic neutron beam was formed via the $^{3}\mathrm{H}(d,n)^{4}\mathrm{He}$ reaction, in the Pd...
2017-10-23T10:00:00+00:00
Author(s): Yin Xia, Jun Xu, Bao-An Li, and Wen-Qing ShenWe have incorporated the spin-dependent nucleon-nucleon cross sections into a Boltzmann-Uehling-Uhlenbeck transport model for the first time, using the spin-singlet and spin-triplet nucleon-nucleon elastic scattering cross sections extracted from the phase-shift analyses of nucleon-nucleon scatterin...
2017-10-23T10:00:00+00:00
Author(s): Zack Wolff and Denes MolnarThe quantitative extraction of quark-gluon plasma (QGP) properties from heavy-ion data, such as its specific shear viscosity $η/s$, typically requires comparison to viscous hydrodynamic or “hybrid” hydrodynamics + transport simulations. In either case, one has to convert the fluid to hadrons, yet wi...
2017-10-23T10:00:00+00:00
Author(s): Mubarak Alqahtani, Mohammad Nopoush, Radoslaw Ryblewski, and Michael StricklandWe compare phenomenological results from $3+1\mathrm{D}$ quasiparticle anisotropic hydrodynamics (aHydroQP) with experimental data collected in the CERN Large Hadron Collider 2.76 TeV Pb-Pb collisions. In particular, we present comparisons of particle spectra, average transverse momentum, elliptic f...
2017-10-23T10:00:00+00:00
Author(s): L. E. Finch and S. J. MurrayWe propose the measurement of net $\mathrm{Λ}$ and $\overline{\mathrm{Λ}}$ helicity, correlated event by event with the magnitude and sign of charge separation along the event's magnetic field direction, as a probe to investigate the chiral magnetic effect (CME) in heavy-ion collisions. With a simpl...
2017-10-20T10:00:00+00:00
Author(s): F. Didierjean et al.Background: While the $N=50$ shell-gap evolution towards $^{78}\mathrm{Ni}$ is presently in the focus of nuclear structure research, experimental information on the neutron effective single-particle energy sequence above the $^{78}\mathrm{Ni}$ core remain scarce. Direct nucleon-exchange reactions ar...
2017-10-20T10:00:00+00:00
Author(s): R. M. E. B. Kandegedara, G. Bollen, M. Eibach, N. D. Gamage, K. Gulyuz, C. Izzo, M. Redshaw, R. Ringle, R. Sandler, and A. A. ValverdeUsing high-precision Penning trap mass spectrometry at the Low Energy Beam and Ion Trap facility at the National Superconducting Cyclotron Laboratory we have measured the $Q$ values of the fourth-order forbidden $β$ decay and electron capture of $^{50}\mathrm{V}$ and the double electron capture $Q$ ...
2017-10-20T10:00:00+00:00
Author(s): P. Garg and D. K. MishraHigh-luminosity modern accelerators, like the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory (BNL) and Large Hadron Collider (LHC) at European Organization for Nuclear Research (CERN), inherently have event pile-up scenarios which significantly contribute to physics events ...
2017-10-20T10:00:00+00:00
Author(s): Juan M. Torres-Rincon and Joerg AichelinWe study the equation of state of QCD using an improved version of the three-flavor Polyakov–Nambu–Jona-Lasinio model beyond the mean-field approximation. It incorporates the effects of unquenched quarks into the Polyakov-loop effective potential, as well as mesonic contributions to the grand-canoni...
2017-10-19T10:00:00+00:00
Author(s): Vladimir Zelevinsky, Naftali Auerbach, and Bui Minh LocThe nuclear shell-model calculations show a clear anticorrelation between the Gamow-Teller strength and the transition rate of the collective quadrupole excitation from the ground state in response to artificial changes of the spin-orbit splitting. The shell-model calculations in the $fp$ space demo...
2017-10-19T10:00:00+00:00
Author(s): S. K. Pandit, A. Shrivastava, K. Mahata, V. V. Parkar, R. Palit, N. Keeley, P. C. Rout, A. Kumar, K. Ramachandran, S. Bhattacharyya, V. Nanal, C. S. Palshetkar, T. N. Nag, Shilpi Gupta, S. Biswas, S. Saha, J. Sethi, P. Singh, A. Chatterjee, and S. KailasThe origin of the large $α$-particle production cross sections in systems involving weakly bound $^{7}\mathrm{Li}$ projectiles has been investigated by measuring the cross sections of all possible fragment-capture as well as complete fusion using the particle-$γ$ coincidence, in-beam, and off-beam $...