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

Scientific paper - Original scientific paper

• Author: B. I. Abelev
• Author: ...
• Author: Mirko Planinić
• Author: ...
• Author: Nikola Poljak
• Author: ...
• Author: J. X. Zuo
• Collaboration: STAR Collaboration
• Author's institution: University of Zagreb; Faculty of Science; (Department of Physics)
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Physics

Abstract (english)

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.

• Keywords (english): 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
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: Physical Review C - Nuclear Physics
• Numbering: vol. 76, no. 6, 064904
• p-ISSN: 0556-2813
• e-ISSN: 1089-490X
• DOI: https://doi.org/10.1103/PhysRevC.76.064904
• URN:NBN: urn:nbn:hr:217:338527
• Publication: 2007
• Project: Number: 119-0982887-1006; Title (croatian): Istraživanje hadronskih sustava upotrebom relativističkih projektila; Leader: Mirko Planinić; Jurisdiction: Croatia; Funding stream: ZP
• Document URL: http://link.aps.org/doi/10.1103/PhysRevC.76.064904
• Type of resource: Text
• Access conditions: Open access
• Public note: Copyright (2007) by the American Physical Society. Received 4 June 2007; published 18 December 2007.
• Created on: 2019-10-18 15:48:10