- Kaons in dense half-Skyrmion matter
Author(s): Byung-Yoon Park, Joon-Il Kim, and Mannque Rho
Dense hadronic matter at low temperatures is expected to be in a crystalline state and at high density to make a transition to a chirally restored but color-confined state, which is a novel phase hitherto unexplored. This phase transition is predicted in both skyrmion matter in four dimensions and i...
[Phys. Rev. C 81, 035203] Published Wed Mar 10, 2010
- Low-lying isomeric levels in ^{75} Cu
Author(s): J. M. Daugas et al.
Isomeric low-lying states were identified and investigated in the ^{75} Cu nucleus. Two states at 61.8(5)- and 128.3(7)-keV excitation energies with half-lives of 370(40)- and 170(15)-ns were assigned as ^{75m1} Cu and ^{75m2} Cu, respectively. The measured half-lives combined with the recent spin a...
[Phys. Rev. C 81, 034304] Published Wed Mar 10, 2010
- High-spin intruder band in ^{107} In
Author(s): E. Ideguchi et al.
High-spin states in the neutron-deficient nucleus ^{107} In were studied via the ^{58} Ni( ^{52} Cr,3p) reaction. In-beam γ rays were measured using the JUROGAM detector array. A rotational cascade consisting of ten γ-ray transitions, which decays to the 19/2^{+} level at 2.002 MeV, was observed. ...
[Phys. Rev. C 81, 034303] Published Wed Mar 10, 2010
- Octupole degree of freedom for the critical-point candidate nucleus ^{152} Sm in a reflection-asymmetric relativistic mean-field approach
Author(s): W. Zhang (张 炜), Z. P. Li (李 志 攀), S. Q. Zhang (张 双 全), and J. Meng (孟 杰)
The potential energy surfaces of even-even ^{146–156} Sm are investigated in the constrained reflection-asymmetric relativistic mean-field approach with parameter set PK1. It is shown that the critical-point candidate nucleus ^{152} Sm marks the shape/phase transition not only from U(5) to SU(3) s...
[Phys. Rev. C 81, 034302] Published Wed Mar 10, 2010
- Probing nucleon-nucleon interactions in breakup of the one-neutron halo nucleus ^{11} Be on a proton target
Author(s): E. Cravo, R. Crespo, A. M. Moro, and A. Deltuva
A comparison between full few-body Faddeev/Alt-Grassberger-Sandhas (Faddeev/AGS) and continuum-discretized coupled-channels calculations is made for the resonant and nonresonant breakup of ^{11} Be on proton target at 63.7 MeV/u incident energy. A simplified two-body model is used for ^{11} Be whic...
[Phys. Rev. C 81, 031601] Published Wed Mar 10, 2010
- Two-phonon octupole excitation in ^{146} Gd
Author(s): L. Caballero, B. Rubio, P. Kleinheinz, S. W. Yates, A. Algora, A. Dewald, A. Fitzler, A. Gadea, J. Jolie, R. Julin, A. Linnemann, S. Lunardi, R. Menegazzo, O. Möller, E. Nácher, M. Piiparinen, and J. Blomqvist
Based on experimental evidence from the ^{144} Sm(α,2n) reaction, the 3484.7-keV 6^{+} state in ^{146} Gd is identified as the highest-spin member of the 3^{-} ⊗3^{-} two-phonon octupole quartet. A previously unknown γ line of 1905.8 keV and E3 character feeding the 3^{-} octupole state has bee...
[Phys. Rev. C 81, 031301] Published Tue Mar 09, 2010
- Nuclear-mass dependence of azimuthal beam-helicity and beam-charge asymmetries in deeply virtual Compton scattering
Author(s): A. Airapetian et al. (HERMES Collaboration)
The nuclear–mass dependence of azimuthal cross-section asymmetries with respect to charge and longitudinal polarization of the lepton beam is studied for hard exclusive electroproduction of real photons. The observed beam-charge and beam-helicity asymmetries are attributed to the interference betw...
[Phys. Rev. C 81, 035202] Published Fri Mar 05, 2010
- Short-lived binary splits of an excited projectile-like fragment induced by transient deformation
Author(s): A. B. McIntosh, S. Hudan, J. Black, D. Mercier, C. J. Metelko, R. Yanez, R. T. de Souza, A. Chbihi, M. Famiano, M. O. Frégeau, J. Gauthier, J. Moisan, R. Roy, S. Bianchin, C. Schwarz, and W. Trautmann
Aligned fragment emission associated with peripheral and midperipheral dissipative collisions of ^{124} Xe+ ^{124} Sn at E/A=50 MeV is examined. Binary decay of the excited projectile-like fragment (PLF^{*} ) is correlated with significant velocity damping from the projectile velocity. Both a forwar...
[Phys. Rev. C 81, 034603] Published Fri Mar 05, 2010
- Relation between equal-time and light-front wave functions
Author(s): Gerald A. Miller and Brian C. Tiburzi
The relation between equal-time and light-front wave functions is studied using models for which the four-dimensional solution of the Bethe-Salpeter wave function can be obtained. The popular prescription of defining the longitudinal momentum fraction using the instant-form free kinetic energy and t...
[Phys. Rev. C 81, 035201] Published Thu Mar 04, 2010
- πΞ correlations: An interweaving of resonance interaction, channel coupling, and Coulomb effects
Author(s): B. O. Kerbikov and L. V. Malinina
A method is presented for analysis of correlation function of two nonidentical particles with strong and Coulomb interactions, resonance formation, channel coupling, and spin structure. For resonance reactions we derive a formula giving the small distance contribution to the correlation function. Th...
[Phys. Rev. C 81, 034901] Published Thu Mar 04, 2010
- Nuclear physics for geo-neutrino studies
Author(s): Gianni Fiorentini, Aldo Ianni, George Korga, Marcello Lissia, Fabio Mantovani, Lino Miramonti, Lothar Oberauer, Michel Obolensky, Oleg Smirnov, and Yury Suvorov
Geo-neutrino studies are based on theoretical estimates of geo-neutrino spectra. We propose a method for a direct measurement of the energy distribution of antineutrinos from decays of long-lived radioactive isotopes. We present preliminary results for the geo-neutrinos from ^{214} Bi decay, a proce...
[Phys. Rev. C 81, 034602] Published Thu Mar 04, 2010
- Chemical potential beyond the quasiparticle mean field
Author(s): N. Dinh Dang and N. Quang Hung
The effects of quantal and thermal fluctuations beyond the BCS quasiparticle mean field on the chemical potential are studied within a model, which consists of N particles distributed amongst Ω doubly folded equidistant levels interacting via a pairing force with parameter G. The results obtained a...
[Phys. Rev. C 81, 034301] Published Thu Mar 04, 2010
- Improved transverse (e,e^{'} ) response function of ^{3} He at intermediate momentum transfers
Author(s): Victor D. Efros, Winfried Leidemann, Giuseppina Orlandini, and Edward L. Tomusiak
The transverse electron scattering response function of ^{3} He is studied in the quasielastic peak region for momentum transfers between 500 and 700 MeV/c. A conventional description of the process leads to results that vary substantially from experiment. To improve the results, the present calcula...
[Phys. Rev. C 81, 034001] Published Thu Mar 04, 2010
- Relativistic nucleus-nucleus collisions: Zone of reactions and space-time structure of fireball
Author(s): D. Anchishkin, A. Muskeyev, and S. Yezhov
A zone of reactions is determined and then exploited as a tool in studying the space-time structure of an interacting system formed in a collision of relativistic nuclei. The time dependence of the reaction rates integrated over spatial coordinates is also considered. Evaluations are made with the h...
[Phys. Rev. C 81, 031902] Published Thu Mar 04, 2010
- Remarks on possible local parity violation in heavy ion collisions
Author(s): Adam Bzdak, Volker Koch, and Jinfeng Liao
In this Rapid Communication we discuss some observations concerning the possible local parity violation in heavy ion collisions recently announced by the STAR Collaboration. Our results can be summarized as follows (i) the measured correlations for same-charge pairs are mainly in-plane and not out o...
[Phys. Rev. C 81, 031901] Published Thu Mar 04, 2010
- Precise half-life values for two-neutrino double-β decay
Author(s): A. S. Barabash
All existing positive results on two-neutrino double-β decay in different nuclei were analyzed. Using the procedure recommended by the Particle Data Group, weighted average values for half-lives of ^{48} Ca, ^{76} Ge, ^{82} Se, ^{96} Zr, ^{100} Mo, ^{100} Mo- ^{100} Ru (0_{1}^{+} ), ^{116} Cd, ^{13...
[Phys. Rev. C 81, 035501] Published Wed Mar 03, 2010
- Vacuum pseudoscalar susceptibility
Author(s): Lei Chang, Yu-Xin Liu, Craig D. Roberts, Yuan-Mei Shi, Wei-Min Sun, and Hong-Shi Zong
We derive a novel model-independent result for the pion susceptibility in QCD via the isovector-pseudoscalar vacuum polarization. In the neighbourhood of the chiral limit, the pion susceptibility can be expressed as a sum of two independent terms. The first expresses the pion-pole contribution. The ...
[Phys. Rev. C 81, 032201] Published Wed Mar 03, 2010
- Erratum: Scintillation time dependence and pulse shape discrimination in liquid argon [Phys. Rev. C 78, 035801 (2008)]
Author(s): W. H. Lippincott, K. J. Coakley, D. Gastler, A. Hime, E. Kearns, D. N. McKinsey, J. A. Nikkel, and L. C. Stonehill
[Phys. Rev. C 81, 039901] Published Tue Mar 02, 2010
- Microscopic description of 295 MeV polarized protons incident on Sn isotopes
Author(s): W. Haider, Manjari Sharma, Y. K. Gambhir, and S. Kailas
We present a Brueckner theory analysis of proton-scattering data from Sn isotopes at 295 MeV. A soft-core Urbana v_{14} internucleon potential has been used to calculate reaction matrices that are folded with point-nucleon (both proton and neutron) densities obtained in the relativistic mean field (...
[Phys. Rev. C 81, 034601] Published Tue Mar 02, 2010
- Identified particle production, azimuthal anisotropy, and interferometry measurements in Au+Au collisions at sqrt[s_{NN} ] =9.2 GeV
Author(s): B. I. Abelev et al. (STAR Collaboration)
We present the first measurements of identified hadron production, azimuthal anisotropy, and pion interferometry from Au+Au collisions below the nominal injection energy at the BNL Relativistic Heavy-Ion Collider (RHIC) facility. The data were collected using the large acceptance solenoidal tracker ...
[Phys. Rev. C 81, 024911] Published Fri Feb 26, 2010
- Resonance behavior of internal conversion coefficients at low γ-ray energy
Author(s): M. B. Trzhaskovskaya, T. Kibédi, and V. K. Nikulin
A resonance-like structure of internal conversion coefficients (ICCs) at low γ-ray energy (≲100 keV) is studied. Our calculations revealed new, previously unknown resonance minima in the energy dependence of ICCs for the ns shells at E2–E5 transitions. The resonances are the most defined for ...
[Phys. Rev. C 81, 024326] Published Fri Feb 26, 2010
- Scintillation efficiency and ionization yield of liquid xenon for monoenergetic nuclear recoils down to 4 keV
Author(s): A. Manzur, A. Curioni, L. Kastens, D. N. McKinsey, K. Ni, and T. Wongjirad
Liquid xenon (LXe) is an excellent material for experiments designed to detect dark matter in the form of weakly interacting massive particles (WIMPs). A low energy detection threshold is essential for a sensitive WIMP search. The understanding of the relative scintillation efficiency (L_{eff} ) and...
[Phys. Rev. C 81, 025808] Published Thu Feb 25, 2010
- Diffraction on nuclei: Effects of nucleon correlations
Author(s): M. Alvioli, C. Ciofi degli Atti, B. Z. Kopeliovich, I. K. Potashnikova, and Iván Schmidt
The cross sections for a variety of diffractive processes in proton-nucleus scattering, associated with large gaps in rapidity, are calculated within an improved Glauber-Gribov theory, where the inelastic shadowing corrections are summed to all orders by employing the dipole representation. The effe...
[Phys. Rev. C 81, 025204] Published Thu Feb 25, 2010
- Isospin-dependent pion in-medium effects on the charged-pion ratio in heavy ion collisions
Author(s): Jun Xu, Che Ming Ko, and Yongseok Oh
Using results from the chiral perturbation theory for the s-wave interaction and the Δ-resonance model for the p-wave interaction of pions with nucleons, we evaluated the spectral functions of pions in asymmetric nuclear matter with unequal proton and neutron densities. We find that in hot dense ne...
[Phys. Rev. C 81, 024910] Published Thu Feb 25, 2010
- Global phenomenological optical model potential for nucleon-actinide reactions at energies up to 300 MeV
Author(s): Yinlu Han, Yongli Xu, Haiying Liang, Hairui Guo, and Qingbiao Shen
A set of new global phenomenological optical model potential parameters for the actinide region with incident nucleon energies from 1 keV up to 300 MeV is obtained. They are based on a smooth, unique functional form for the energy dependence of the potential depths and on physically constrained geo...
[Phys. Rev. C 81, 024616] Published Thu Feb 25, 2010
- Effects of α-cluster potentials for the ^{16} O+ ^{16} O fusion reaction and S factor
Author(s): G. Kocak, M. Karakoc, I. Boztosun, and A. B. Balantekin
A joint analysis of the elastic-scattering angular distributions and fusion cross sections together with the S factor for the ^{16} O+ ^{16} O system near and below the Coulomb barrier is reported. To describe these observables within the framework of the optical model, a comparative study of micros...
[Phys. Rev. C 81, 024615] Published Thu Feb 25, 2010
- Determination of neutron multiplication coefficients for fuel elements irradiated by spallation neutrons
Author(s): Chitra Bhatia and V. Kumar
A neutron multiplication coefficient, k_{eff} , has been estimated for spallation neutron flux using the data of spectrum average cross sections of all absorption, fission, and nonelastic reaction channels of ^{232} Th, ^{238} U, ^{235} U, and ^{233} U fuel elements. It has been revealed that in spa...
[Phys. Rev. C 81, 024614] Published Thu Feb 25, 2010
- Energy dependence of the optical potential of weakly and tightly bound nuclei as projectiles on a medium-mass target
Author(s): J. M. Figueira, J. O. Fernández Niello, A. Arazi, O. A. Capurro, P. Carnelli, L. Fimiani, G. V. Martí, D. Martinez Heimann, A. E. Negri, A. J. Pacheco, J. Lubian, D. S. Monteiro, and P. R. S. Gomes
Angular distributions for the elastic scattering of the weakly bound ^{6,7} Li+ ^{144} Sm systems were measured with high accuracy at bombarding energies from 85% up to 170% of the Coulomb barrier. An optical model analysis was performed, and the relevant parameters of the real and imaginary parts o...
[Phys. Rev. C 81, 024613] Published Thu Feb 25, 2010
- Radiative strength functions in ^{163,164} Dy
Author(s): H. T. Nyhus, S. Siem, M. Guttormsen, A. C. Larsen, A. Bürger, N. U. H. Syed, G. M. Tveten, and A. Voinov
The nuclei ^{163,164} Dy have been investigated using the Oslo method on data from the pickup reaction ^{164} Dy( ^{3} He,αγ) ^{163} Dy and the inelastic scattering ^{164} Dy( ^{3} He, ^{3} He^{′} γ) ^{164} Dy, respectively. The radiative strength functions for both nuclei have been extracted, ...
[Phys. Rev. C 81, 024325] Published Thu Feb 25, 2010
- Cross sections for neutron capture from surrogate measurements: An examination of Weisskopf-Ewing and ratio approximations
Author(s): Jutta E. Escher and Frank S. Dietrich
Motivated by the renewed interest in the surrogate nuclear reactions approach, an indirect method for determining compound-nuclear reaction cross sections, the prospects for determining (n,γ) cross sections for deformed rare-earth and actinide nuclei are investigated. A nuclear reaction model is em...
[Phys. Rev. C 81, 024612] Published Wed Feb 24, 2010
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