Hadronic resonance production in d+Au collisions at √sNN=200 GeV measured at the BNL Relativistic Heavy Ion Collider

Abelev, B. I. and Planinić, Mirko and Poljak, Nikola and Zuo, J. X. (STAR Collaboration) (2008) Hadronic resonance production in d+Au collisions at √sNN=200 GeV measured at the BNL Relativistic Heavy Ion Collider. Physical Review C, 78 (4). pp. 44906-20. ISSN 0556-2813

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Abstract

We present the first measurements of the ρ(770)0,K∗(892),Δ(1232)++,Σ(1385), and Λ(1520) resonances in d+Au collisions at √sNN=200 GeV, reconstructed via their hadronic decay channels using the STAR detector (the solenoidal tracker at the BNL Relativistic Heavy Ion Collider). The masses and widths of these resonances are studied as a function of transverse momentum pT. We observe that the resonance spectra follow a generalized scaling law with the transverse mass mT. The <pT> of resonances in minimum bias collisions are compared with the <pT> of π,K, and p¯. The ρ0/π−,K∗/K−,Δ++/p,Σ(1385)/Λ, and Λ(1520)/Λ ratios in d+Au collisions are compared with the measurements in minimum bias p+p interactions, where we observe that both measurements are comparable. The nuclear modification factors (RdAu) of the ρ0,K∗, and Σ∗ scale with the number of binary collisions (Nbin) for pT> 1.2 GeV/c.

Item Type: Article
Keywords: masses and widths of these resonances
Date: October 2008
Subjects: NATURAL SCIENCES > Physics
Additional Information: Copyright (2008) 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: 10 Jun 2014 12:45
Last Modified: 10 Jun 2014 12:45
URI: http://digre.pmf.unizg.hr/id/eprint/2340

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