Study of collective matter flow in central C-Ne and C-Cu collisions at energy of 3.7 GeV per nucleon

Abstract

The transverse momentum technique is used to analyse charged-particle exclusive data in the central C-Ne and C-Cu interactions at energy of 3.7 Gev per nucleon. The clear evidence of in-plane and out-of-plane (squeeze-out) flow effects for protons and ${\pi }^{-}$ mesons have been obtained. In C-Ne interactions the ${\pi }^{-}$ mesons in-plane flow is in the same direction to the protons, while in C-Cu collisions pions show antiflow behaviour. From the transverse momentum and azimuthal distributions of protons and pi^{-} mesons with respect to the reaction plane the flow F (the measure of the amount of collective transverse momentum transfer in the reaction plane) and the parameter a_{2} (the measure of the strength of the anisotropic emission) have been extracted. The flow effects increase with the mass of the particle and atomic number of target A_{T}. The comparison of our in-plane flow results with flow data of various projectile/target configurations had been done by a scaled flow F_{S}=F/(A_{P}^{1/3}+A_{T}^{1/3}). F_{S} demonstrates a common scaling behaviour among flow values from different systems.

15 pages with 4 postscript figures. submitted to Phys.Lett.B

References in corpus (8)

• Transverse momentum analysis of collective motion in relativistic nuclear collisions
• Elliptic Flow: Transition from out-of-plane to in-plane Emission in Au + Au Collisions
• Observation of Anisotropic Event Shapes and Transverse Flow in Au+Au Collisions at AGS Energy
• Disappearance of Elliptic Flow: A New Probe for the Nuclear Equation of State
• Azimuthal correlations of pions in relativistic heavy ion collisions at 1 GeV/nucl.
• Particle Production and Flow at SIS Energies
• The energy dependence of flow in Ni induced collisions from 400 to 1970A MeV
• The observation of collective effects in central C-Ne and C-Cu collisions at a momentum of 4.5 GeV/c per nucleon

Cited by in corpus (9)

• Flow analysis from multiparticle azimuthal correlations
• Systematics of Stopping and Flow in Au+Au Collisions
• Anisotropic Collective Flow of Lambda Hyperons Produced in C + C Collisions at 4.2 AGeV/c
• Collective Flow of Protons and Negative Pions in Nucleus-Nucleus Collisions at Momentum of $4.2÷4.5$ AGeV/c
• Study of Multiparticle Azimuthal Correlations in Central CNe, MgMg, CCu and OPb Interactions at Energy of 3.7 GeV per Nucleon
• Anisotropic flow in 4.2A GeV/c C+Ta collisions
• Differential Transverse Flow in Central C-Ne and C-Cu Collisions at 3.7 GeV/nucleon
• Study of collective flows of protons and ${\pi }^{-}$ -mesons in p(C, Ta) and He(Li, C) collisions at momenta of 4.2, 4.5 and 10 AGeV/c
• Study of Multiparticle Production Processes in Relativistic Nucleus-Nucleus Collisions by Using Streamer Spectrometer