Forward Λ production and nuclear stopping power in d+Au collisions at √sNN=200 GeV

Abelev, B. I. and Planinić, Mirko and Poljak, Nikola and Zuo, J. X. (STAR Collaboration) (2007) Forward Λ production and nuclear stopping power in d+Au collisions at √sNN=200 GeV. Physical Review C, 76 (6). pp. 64904-11. ISSN 0556-2813

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We report the measurement of Λ and Λ¯ yields and inverse slope parameters in d+Au collisions at √sNN=200 GeV at forward and backward rapidities (y=±2.75), using data from the STAR forward time projection chambers. The contributions of different processes to baryon transport and particle production are probed exploiting the inherent asymmetry of the d+Au system. Comparisons to model calculations show that baryon transport on the deuteron side is consistent with multiple collisions of the deuteron nucleons with gold participants. On the gold side, HIJING-based models without a hadronic rescattering phase do not describe the measured particle yields, while models that include target remnants or hadronic rescattering do. The multichain model can provide a good description of the net baryon density in d+Au collisions at energies currently available at the BNL Relativistic Heavy Ion Collider, and the derived parameters of the model agree with those from nuclear collisions at lower energies.

Item Type: Article
Keywords: deuteron nucleus, inclusive reaction gold Lambda, hadroproduction Lambda, hadronic decay small-angle wide-angle yield, (Lambda Antilambda) impact parameter, dependence transverse momentum, spectra cross section, slope nuclear reaction, model transport theory multiple scattering baryon, density nuclear physics, effect magnetic detector, STAR experimental results Brookhaven RHIC Coll 200 GeV-cms/nucleon
Date: December 2007
Subjects: NATURAL SCIENCES > Physics
Additional Information: Copyright (2007) by the American Physical Society.
Divisions: Faculty of Science > Department of Physics
Project code: 119-0982887-1006
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 01 Jul 2014 11:10
Last Modified: 01 Jul 2014 11:10

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