nucl-th digest · Mar 16, 2015

Odd-even mass staggering with Skyrme-Hartree-Fock-Bogoliubov theory

We have studied odd-even nuclear mass staggering with the Skyrme-Hartree-Fock-Bogoliubov theory by employing isoscalar and isovector contact pairing interactions. By reproducing the empirical odd-even mass differences of the Sn isotopic chain, the strengths of pairing interactions are determined. The optimal strengths adjusted in this work can give better description of odd-even mass differences than that fitted by reproducing the experimental neutron pairing gap of

^{120}

Sn.

Comments:: 9 pages, 3 figures, submitted to PRC Brief Report
Subjects:: Nuclear Theory (nucl-th)
arXiv:: 1503.03994 [pdf]

PRC(2015)·11 citations

[Submitted on 13 Mar 2015]

Bose-Einstein condensation of pions in heavy-ion collisions at the CERN Large Hadron Collider (LHC) energies

Viktor Begun🇵🇱 · Wojciech Florkowski🇵🇱

We analyse in detail the possibility of Bose-Einstein condensation of pions produced in heavy-ion collisions at the beam energy $s_{NN}$ = 2.76 TeV. Our approach is based on the chemical non-equilibrium thermal model of hadron production which has been generalised to include separately the contribution from the local zero-momentum state. In order to study both the hadronic multiplicities and the transverse-momentum spectra, we use the Cracow freeze-out model which parameterises the flow and space-time geometry of the system at freeze-out in a very economic way. Our analysis indicates that about 5% of all pions may form the Bose-Einstein condensate.

Comments:: The comparison with the equilibrium model is added to the section where we discuss pion spectra
Subjects:: Nuclear Theory (nucl-th); High Energy Physics — Phenomenology (hep-ph)
arXiv:: 1503.04040 [pdf]

PRC(2015)·70 citations

Monday·March 16, 2015

Odd-even mass staggering with Skyrme-Hartree-Fock-Bogoliubov theory

Bose-Einstein condensation of pions in heavy-ion collisions at the CERN Large Hadron Collider (LHC) energies

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