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Nuclear Theory·nucl-th

Monday·April 22, 2019

4 papers—3 primary·1 cross-listed

All4Primary3Cross-lists1
  1. 01

    [Submitted on 19 Apr 2019]

    Theory on Hadrons in Nuclear Medium

    Su Houng Lee🇰🇷

    After decades-long attempts to measure the mass shift and understand the origin of hadron mass, it became clear that one has to analyze hadrons with small vacuum width. Also, to identify the effect of chiral symmetry breaking, one has to start by looking at chiral partners. In this talk, I will review why such consideration inevitably led us to consider and in nuclear matter [T. Song, T. Hatsuda, S H Lee, PLB792 (2019) 160-169]. With the kaon beam at JPARC, one could observe the mass shift of both particles in a nuclear target experiment. Once the masses and mass difference of and mesons are measured, we will be closer to understanding the origin of the hadron masses and the effects of chiral symmetry breaking in them.

    Comments:
    8 pages, Plenary talk at QNP-2018
    Subjects:
    Nuclear Theory (nucl-th); High Energy Physics — Phenomenology (hep-ph); Nuclear Experiment (nucl-ex)
    arXiv:
    1904.09064 [pdf]
    JPS Conf.Proc.(2019)·14 citations
  2. 02

    [Submitted on 19 Apr 2019]

    Influence of low-lying resonances on reaction rates for n10B capture

    S B Dubovichenko🇰🇿 · N A Burkova🇰🇿 · A V Dzhazairov-Kakhramanov🇰🇿

    The possibility of description available experimental data for total cross section for reaction of the neutron capture on 10B at energies from 25.3 meV to 1.0 MeV was considered in the frame of the modified potential cluster model with forbidden states, classification of the orbital cluster states according to Young diagrams and taking into account the resonance behavior of phase shifts of the n10B elastic scattering. The obtained results agree with the experimental measurements. The calculated total cross sections are used for obtaining the reaction rate of the neutron capture on 10B at the temperature range from 0.01 to 10 T9. The reaction rate rises essentially at temperatures above 0.3 - 0.4 T9, conditioned by the resonances at the energy above 100 keV.

    Comments:
    10 fig., 4 tabl., 16p
    Subjects:
    Nuclear Theory (nucl-th)
    arXiv:
    1904.09069 [pdf]
    NPA(2019)·7 citations
  3. 03

    [Submitted on 19 Apr 2019]

    A microscopic description for polarization in particle scatterings

    Jun-jie Zhang🇨🇳 · Ren-hong Fang🇨🇳 · Qun Wang🇨🇳 · Xin-Nian Wang🇨🇳

    We propose a microscopic description for the polarization from the first principle through the spin-orbit coupling in particle collisions. The model is different from previous ones based on local equilibrium assumptions for the spin degree of freedom. It is based on scatterings of particles as wave packets, an effective method to deal with particle scatterings at specified impact parameters. The polarization is then the consequence of particle collisions in a non-equilibrium state of spins. The spin-vorticity coupling naturally emerges from the spin-orbit one encoded in polarized scattering amplitudes of collisional integrals when one assumes local equilibrium in momentum but not in spin.

    Comments:
    RevTex 4, 54 pages, 4 figures
    Subjects:
    Nuclear Theory (nucl-th)
    arXiv:
    1904.09152 [pdf]
    PRC(2019)·75 citations
  4. 04

    [Submitted on 18 Apr 2019] (cross-list from hep-ph)

    Chiral perturbation theory in the environment with chiral imbalance

    A.A. Andrianov🇷🇺 · V.A. Andrianov🇷🇺 · D. Espriu🇪🇸

    We discuss the description of chiral imbalance imprint in pion matter. It is based on the Chiral Perturbation Theory supplemented by medium induced chiral chemical potential in the covariant derivative. Such an implementation of chiral imbalance recently was explored in linear sigma model inspired by QCD. The relationship between two sigma models is examined. A possible experimental detection of chiral imbalance in charged pion decays inside the fireball is pointed out.

    Comments:
    6 pages, Talk given on the conference "Excited QCD" (Schladming, Austria,Jan. 30- Feb. 3, 2019), few misprints are corrected
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
    arXiv:
    1904.09000 [pdf]
    Acta Phys.Polon.Supp.(2020)·0 citations

Affiliations

first authorsco-authorsvia INSPIRE