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SUMMARY:THE ROLE OF QUARKS IN NUCLEAR STRUCTURE: ALPHA-CLUSTERING AND NUCL
 EOSYNTHESIS IN STARS
DTSTART;VALUE=DATE-TIME:20241024T073000Z
DTEND;VALUE=DATE-TIME:20241024T074500Z
DTSTAMP;VALUE=DATE-TIME:20260313T081635Z
UID:indico-contribution-4171@cern.ch
DESCRIPTION:Speakers: Genis Musulmanbekov (JINR)\nWe propose a quark model
  of nuclear structure where quark correlations lead to nucleon-nucleon cor
 relations and arrangement of them into lattice--like structure. The model 
 is based on the quark model of nucleon structure in which valence quarks a
 re strongly correlated within a nucleon (SCQM) [1]. Nuclei are built by ju
 nctions of SU(3) color fields of two quarks of neighboring nucleons. Appli
 cation of the model to larger collections of nucleons reveals the emergenc
 e of the face-centered cubic (FCC) symmetry at a nuclear level where nucle
 ons are arranged in alternating spin--isospin layers [2\, 3]. The model of
  nuclear structure becomes isomorphic to the shell model and\, moreover\, 
 composes the features of the liquid drop and cluster models. In difference
  with the shell model\, protons and neutrons in our model are strongly cor
 related.  It turns out that building blocks of the nuclear structure are t
 hree-nucleon (triton and 3He) and four-nucleon (α-cluster) like configura
 tions. These configurations form inside nuclei virtual triton/3He and α- 
 clusters. We apply the model to analyze nucleosynthesis in stars in the fr
 amework of α-clustering. It turns out that the gateway for synthesis of e
 lements heavier than 12C is provided by composition of 5 α- clusters\, th
 at corresponds to the excited state 20Ne. Excited 20Ne\, than decays to li
 ghter nuclei C\, N\, O.\nOur approach is an alternative to the 3-α  Hoyle
  state  that provides the nucleosynthesis of heavier elements occurring na
 turally in stars.\n\n\n\n1. G. Musulmanbekov\, in Frontiers of Fundamental
  Physics\, Ed. B. G. Sidharth\, (Kluwer Acad./Plenum Pub.\, New York\, 200
 1)\, p. 109–120. (2004)\; PEPAN Lett.\, Vol.\, № 5\, p. 548-558.\n2. G
 . Musulmanbekov and N.D. Cook\, Phys.Atom.Nucl. \, 71\, 1226 (2008).\n3. G
 . Musulmanbekov\, in Exotic Nuclei\, Eds. Yu.Peniozhkevich and Yu. Sobolev
 \, World Sci.\, Singapore\, 2017\, p. 58\; arXiv:1708.04437v2 [nucl-th].\n
 \nhttps://indico.particle.mephi.ru/event/436/contributions/4171/
LOCATION: Moskvorechye 2
URL:https://indico.particle.mephi.ru/event/436/contributions/4171/
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