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SUMMARY:Quark-gluon string tension fluctuations and the effect on strange 
 particle yields
DTSTART;VALUE=DATE-TIME:20261027T162500Z
DTEND;VALUE=DATE-TIME:20261027T163000Z
DTSTAMP;VALUE=DATE-TIME:20261105T164654Z
UID:indico-contribution-6466@cern.ch
DESCRIPTION:Speakers: Andrey Puchkov (Saint Petersburg State University)\n
 In various microscopic string models (see\, e.g.\, [1–8])\, the Schwinge
 r mechanism [9\, 10]—which features a characteristic Gaussian exponentia
 l—is used to describe particle transverse-momentum spectra. On the other
  hand\, experimental data on inclusive hadron production spectra exhibit p
 ronounced thermal behavior. A. Bialas [11] proposed resolving this contrad
 iction by accounting for fluctuations in the string tension k\, modeled by
  a Gaussian distribution. However\, the probability distribution proposed 
 in [11] peaked at k = 0\, which seems physically incorrect in the context 
 of QCD confinement: a string possesses finite average energy density\, so 
 the probability of zero tension should vanish. In the present work\, we mo
 dify the Bialas approach by assessing the local string tension fluctuation
 s around its mean value. We demonstrate that not only the mean value of th
 e string tension but also its fluctuations influence the strangeness produ
 ction\, and the treatment of these fluctuations allows for a better descri
 ption of strange particle yields.\n\nThe authors acknowledge Saint-Petersb
 urg State University for a research project ID: 153212394\n\n1. E. G. Ferr
 eiro and C. Pajares\, J. Phys. G 23\, 1961 (1997).\n2. N. Armesto\, D. A. 
 Derkach\, G. A. Feofilov\, Phys. Atom. Nucl. 71\, 2087 (2008).\n3. E. O. B
 odnya\, V. N. Kovalenko\, A. M. Puchkov\, G. A. Feofilov\, AIP Conf. Proc.
  1606\, 273 (2015).\n4. V. N. Kovalenko\, A. M. Puchkov\, G. A. Feofilov\,
  Bull. Russ. Acad. Sci. Phys. 80\, 8 (2016).\n5. V. Kovalenko\, G. Feofilo
 v\, A. Puchkov\, F. Valiev\, Universe 8\, 246 (2022).\n6. V. V. Vechernin\
 , Phys. Part. Nucl. 54\, 528 (2023).\n7. V. Vechernin\, E. Andronov\, V. K
 ovalenko\, A. Puchkov\, Universe 10\, 56 (2024).\n8. E.V. Andronov \, A.M.
  Puchkov\, V.V. Vechernin\, V.N. Kovalenko\, Phys. Part. Nuclei 57\, 1153
 –1157 (2026).\n9. J. Schwinger\, Phys. Rev. 82\, 664 (1951).\n10. T. D. 
 Cohen and D. A. McGady\, Phys. Rev. D 78\, 036008 (2008)\; E. G. Gurvich\,
  Phys. Lett. B 87\, 386 (1979).\n11. A. Bialas\, Phys. Lett. B 466\, 301-3
 04 (1999).\n\nhttps://indico.particle.mephi.ru/event/626/contributions/646
 6/
LOCATION:Sevastopol hotel Conference Hall 1
URL:https://indico.particle.mephi.ru/event/626/contributions/6466/
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