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Nuclear Theory·nucl-th

Thursday·January 7, 2021

7 papers—2 primary·5 cross-listed

All7Primary2Cross-lists5
  1. 01

    [Submitted on 6 Jan 2021]

    The Gluon Exchange Model for diffractive and inelastic collisions

    Marek Jeżabek🇵🇱 · Andrzej Rybicki🇵🇱

    We propose a new model for a homogeneous description of hadron-hadron and hadron-nucleus collisions, the Gluon Exchange Model, fundamentally based on color octet (gluon) exchange. In proton-proton collisions we provide an exact description of the final state proton and neutron spectrum including the proton diffractive peak. In proton-nucleus reactions we find that the projectile proton diquark cannot survive in more than about half of multiple proton-nucleon processes and consequently must be very frequently disintegrated, leading to long transfers of baryon number over rapidity space.

    Comments:
    10 pages, 4 figures
    Subjects:
    Nuclear Theory (nucl-th); High Energy Physics — Phenomenology (hep-ph)
    arXiv:
    2101.01999 [pdf]
    PLB(2021)·5 citations
  2. 02

    [Submitted on 6 Jan 2021]

    Efficiency corrections for factorial moments and cumulants of overlapping sets of particles

    Volodymyr Vovchenko🇺🇸 · Volker Koch🇺🇸

    In this note we discuss subtleties associated with the efficiency corrections for measurements of off-diagonal cumulants and factorial moments for a situation when one deals with overlapping sets of particles, such as correlations between numbers of protons and positively charged particles. In particular, we discuss the situation commonly encountered in heavy-ion experiments, where first all charges are reconstructed and then protons are selected from these charges by an additional particle identification procedure. We present the efficiency correction formulas for the case when the detection efficiencies follow a binomial distribution.

    Comments:
    13 pages, 1 figure, to appear in Nucl. Phys. A
    Subjects:
    Nuclear Theory (nucl-th); High Energy Physics — Phenomenology (hep-ph); Nuclear Experiment (nucl-ex)
    arXiv:
    2101.02182 [pdf]
    NPA(2021)·5 citations

Affiliations

first authorsco-authorsvia INSPIRE