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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 2:14 |
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Conference: Bucharest University Faculty of Physics 2018 Meeting
Section: Nuclear and Elementary Particles Physics
Title:
Numeric quark toy-model for chaos analysis of pp collisions at sqrt(s) = 10 GeV
Authors:
Ioan V. GROSSU (1), Calin BESLIU (1), Alexandru JIPA (1), Daniel FELEA (2), Emil STAN (2), Tiberiu ESANU (1,3)
Affiliation:
1) University of Bucharest, Faculty of Physics, Bucharest-Măgurele, P.O. Box MG 11, 077125, Romania
2) Institute of Space Science, Bucharest-Măgurele, P.O. Box MG 23, 077125, Romania
3) Horia Hulubei” National Institute for R&D in Physics and Nuclear Engineering, IFIN-HH, Bucharest, Măgurele, Romania
E-mail
ioan.grossu@brahms.fizica.unibuc.ro
Keywords:
Quark, Chaos, High Energy, Monte-Carlo
Abstract:
In Grossu et al. [1] we presented a Chaos Many-Body Engine (CMBE) toy-model for chaos analysis of Cu + Cu relativistic nuclear collisions at 200 A GeV/c (the maximum BNL energy). Inspired by existing quark billiards [2], we extended CMBE to partons [3]. The model is based on the following intuitive assumptions: 1) although gluons are not explicitly implemented, their kinetic effect is included in quark masses (constituent model [4]); 2) the system can be decomposed into a set of two or three-body quark white clusters; 3) the bi-particle force is limited to the domain of each cluster; 4) from all possible cluster configurations, the physical solution must conform to the minimum potential energy requirement. We also employed a set of pair-generation reactions. A first comparative study revealed an encouraging agreement between HIJING [5] and CMBE. Thus, in the absence of both an exhaustive reactions schema and a recombination mechanism, the proposed toy-model could be understood as a first promising step in our attempt.In Grossu et al. [1] we presented a Chaos Many-Body Engine (CMBE) toy-model for chaos analysis of Cu + Cu relativistic nuclear collisions at 200 A GeV/c (the maximum BNL energy). Inspired by existing quark billiards [2], we extended CMBE to partons [3]. The model is based on the following intuitive assumptions: 1) although gluons are not explicitly implemented, their kinetic effect is included in quark masses (constituent model [4]); 2) the system can be decomposed into a set of two or three-body quark white clusters; 3) the bi-particle force is limited to the domain of each cluster; 4) from all possible cluster configurations, the physical solution must conform to the minimum potential energy requirement. We also employed a set of pair-generation reactions. A first comparative study revealed an encouraging agreement between HIJING [5] and CMBE. Thus, in the absence of both an exhaustive reactions schema and a recombination mechanism, the proposed toy-model could be understood as a first promising step in our attempt.
References:
[1] I.V. Grossu, C. Besliu, Al. Jipa, D. Felea, E. Stan, T. Esanu, Comput. Phys. Comm. 195 (2015) 218–220
[2] C. C. Bordeianu, C. Besliu, Al. Jipa, & D. Felea. (2007). Numerical simulation of quark systems using a semi-classical billiard model. Book of abstracts, (p. 1218). Turkey
[3] I.V. Grossu, C. Besliu, Al. Jipa, Implementation of a quark toy-model for Chaos Many-Body Engine, University Of Bucharest, Faculty of Physics, 2016 Meeting
[4] D.Diakonov, Foundations of the constituent quark model, Progress in Particle and Nuclear Physics, Volume 36, 1996, Pages 1-17
[5] Xin-Nian Wang and Miklos Gyulassy, HIJING: A Monte Carlo model for multiple jet production in p p, p A and A A collisions, Phys.Rev.D 44, 3501 (1991).
Acknowledgement:
This work was supported by 09-FAIR/16.09.2016, FAIR-RO and University of Bucharest project nr. 48/2018
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