English

Possibility of bottom-catalyzed matter genesis near to primordial QGP hadronization

High Energy Physics - Phenomenology 2020-04-16 v1 Cosmology and Nongalactic Astrophysics Nuclear Theory

Abstract

We study bottom flavor abundance in the early Universe near to a temperature TH150MeVT_\mathrm{H}\simeq150\,\mathrm{MeV}, the condition for hadronization of deconfined quark-gluon plasma (QGP). We show bottom flavor abundance nonequilibrium lasting microseconds. In our study we use that in both QGP, and the hadronic gas phase (HG) bb and bˉ\bar b quarks near THT_\mathrm{H} are bound in B-mesons and antimesons subject to CPCP violating weak decays. A coincident non-equilibrium abundance of bottom flavor can lead to matter genesis at required strength: a) The specific thermal yield per entropy is nbth/σ=10101013n_b^{th}/\sigma=10^{-10}\sim10^{-13}. b) Considering time scales, millions of cycles of B-meson decays, and bbˉb\bar b-pair recreation processes occur.

Keywords

Cite

@article{arxiv.2004.06771,
  title  = {Possibility of bottom-catalyzed matter genesis near to primordial QGP hadronization},
  author = {Cheng Tao Yang and Johann Rafelski},
  journal= {arXiv preprint arXiv:2004.06771},
  year   = {2020}
}

Comments

7 pages, 4 figures