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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 18:29 |
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Conference: Bucharest University Faculty of Physics 2009 Meeting
Section: Nuclear and Elementary Particles Physics
Title:
Fluctuations in Light Ion Induced Reactions
Authors:
Danut Argintaru (1), Calin Besliu (2), Alexandru Jipa (2), Cristina Argintaru (3), Tiberiu Esanu(2)
Affiliation:
(1) Mathematics, Mechanics and Physics Department, Maritime University of Constanta, ROMANIA, 900663 Constanta, Str. Mircea cel Batran, Nr. 104, Jud. Constanta;
(2) Atomic and Nuclear Physics Department, Faculty of Physics, University of Bucharest, ROMANIA
(3) Physics Department, High School “Ion Banescu”, Mangalia, ROMANIA
E-mail
danag@imc.ro
Keywords:
fluctuations, nuclear matter jets, multifragmentation
Abstract:
The concept of “nuclear matter jets” is an interesting tool for selecting different event structures such as: single-jet events, two-jet events, three-jet events, and non-jet events in He+AT at 4.5 A GeV/c collisions. When the studied data sample consists of dynamically very similar events, event-by-event fluctuations are expected to be small [1, 2]. On the contrary, when different classes of events are present, the fluctuations from one event to another are obviously much higher (various classes of events may exhibit different global characteristics). The event by event fluctuations of the multiplicity of charged particles Nch and of the transverse momentum pT observed in He+AT collisions, for different jet classes, could indicate a transition from a mechanism of particle production to another, or maybe a phase transition, especially in the class of non jet events.
[1] M. Gazdzicki and M. I. Gorenstein, Acta Phys. Polon. B30, 2705 [hep-ph/9803462];
[2] K.Grebieszkow for the NA49 Collaboration, arXiv: nucl-ex/0707.4608v2 28 Feb 2008.
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