Transverse momentum distributions and string percolation study in p+p, d+Au and Au+Au collisions at square rootsNN = 200 GeV

• Autorzy: Srivastava B. , Scharenberg R. , Tarnowsky T.
• Konferencja: Proceedings of the 18th International conference on Nucleus-Nucleus Collisions QUARK MATTER 2005, 4-9 August, 2005, Budapest, Hungary
• Języki publikacji: EN

Abstrakty

EN

Multiparticle production at high energies is described in terms of color strings stretched between the projectile and target. As string density increases, overlap among the strings leads to cluster formation. At some critical density, a macroscopic cluster appears, spanning the entire system. This marks the percolation phase transition. Data from p+p, d+Au and Au+Au collisions at 200 GeV has been analyzed using the STAR detector to obtain the percolation density parameter, eta. For 200 GeV Au+Au collisions, the value of h is found to lie above the critical percolation threshold, while for 200 GeV d+Au collisions it is below the critical value. This supports the idea of string percolation, which at high enough string density is a possible mechanism to explore the hadronic phase transition to a quark-gluon plasma.

Słowa kluczowe

EN

STAR; RHIC; percolation; string fusion

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2006
• Tom: Vol. 51,suppl.3
• Strony: 109--112
• Opis fizyczny: Bibliogr. 7 poz., rys.

Twórcy

autor

Srivastava B.

autor

Scharenberg R.

autor

Tarnowsky T.

• Purdue University, Department of Physics, 525 Northwestern Ave, West Lafayette, IN 47907, USA, Tel.: [phone], Fax: [phone],

Bibliografia

• 1. Adams J et al. (STAR Collaboration) (2003) Production of charged pions and hadrons in Au+Au collisions at sqrt(s_NN)=130GeV. APS arXiv:nucl-ex/0311017
• 2. Braun MA, del Moral F, Pajares C (2002) Percolation of strings and the relativistic energy data on multiplicity and transverse momentum distributions. Phys Rev C 65:024907
• 3. Braun MA, del Moral F, Pajares C (2003) Centrality dependence of the multiplicity and transverse momentum distributions at RHIC and LHC and the percolation of strings. Nucl Phys A 715:791?794
• 4. Braun MA, Pajares C (1993) A probabilistic model of interacting strings. Nucl Phys B 390:542?558
• 5. Capella A, Sukhatme U, Tan C-I, Tran Thanh Van J (1994) Dual parton model. Phys Rep 236:225?329
• 6. Isichenko MB (1992) Percolation, statistical topography,and transport in random media. Rev Mod Phys 64:961?1043
• 7. Satz H (2000) Colour deconfinement in nuclear collisions.Rep Prog Phys 63:1511?1574