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Fizika B : a journal of experimental and theoretical physics, Vol. 12 No. 3, 2003.

Original scientific paper

Tvorba hadrona u fazi kvark-gluon plazme ultrarelativističih sudara teških iona

A. Ya. Berdnikov ; Department of Nuclear Physics, State Polytechnical University of St. Petersburg, Polytechnicheskaya 29, 195251 St. Petersburg, Russian Federation
Ya. A. Berdnikov ; Department of Nuclear Physics, State Polytechnical University of St. Petersburg, Polytechnicheskaya 29, 195251 St. Petersburg, Russian Federation; State Technical University, Department of Nuclear Physics, 195251 St. Petersburg, Russian Federation
A. N. Ivanov ; Department of Nuclear Physics, State Polytechnical University of St. Petersburg, Polytechnicheskaya 29, 195251 St. Petersburg, Russian Federation; Atomic Institute of the Austrian Universities and Vienna University of Technology, A-1040 Vienna, Austria
V. A. Ivanova ; Department of Nuclear Physics, State Polytechnical University of St. Petersburg, Polytechnicheskaya 29, 195251 St. Petersburg, Russian Federation
V. F. Kosmach ; Department of Nuclear Physics, State Polytechnical University of St. Petersburg, Polytechnicheskaya 29, 195251 St. Petersburg, Russian Federation
V. M. Samsonov ; Department of Nuclear Physics, State Polytechnical University of St. Petersburg, Polytechnicheskaya 29, 195251 St. Petersburg, Russian Federation; St. Petersburg Institute for Nuclear Research, Gatchina, Russian Federation
N. I. Troitskaya ; Department of Nuclear Physics, State Polytechnical University of St. Petersburg, Polytechnicheskaya 29, 195251 St. Petersburg, Russian Federation

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Abstract

Opisujemo kvark-gluon plazmu (QGP) kao ravnotežni sustav kvarkova i gluona, tj. termaliziranu QGP fazu kvantne kromodinamike. Hadronizacija ravnotežne QGP faze opisuje se slično modelu skupljanja s koreliranim kvarkovima i antikvarkovima. Ulazni parametri ovog pristupa su prostorni volumeni hadronizacije. Uvodimo tri bezdimenzijska parametra, CM, CB i CB¯ , vezanih s prostornim volumenima tvorbe lakih mezona (M), bariona (B) i antibariona (B). Pokazujemo da su na temperaturi ¯ T = 175MeV naša predviđanja za omjere višestrukosti u skladu s poznatim skupom omjera hadrona određenim mjerenjima Pb + Pb sudara u eksperimentima NA44, NA49, NA50 i WA97 na 158 GeV/nukleon, NA35 suradnje za S + S sudare i NA38 suradnje za O + U i S + U sudare na 200 GeV/nukleon.

Keywords

Hrčak ID:

305227

URI

https://hrcak.srce.hr/305227

Publication date:

1.9.2003.

Article data in other languages: english

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