Hadronic resonance production in d+au collisions at {radical}{ovr s}{sub NN} =200 GeV measured at the BNL relativistic heavy ion collider.

Journal Article · Tue Jan 01 04:00:00 EST 2008 · Phys. Rev. C

DOI:https://doi.org/10.1103/PhysRevC.78.044906· OSTI ID:964251

Abelev, B I; Aggarwal, M M; Ahammed, Z; Anderson, B D; Arkhipkin, D; Krueger, K; Spinka, H M; Underwood, D G

We present the first measurements of the {rho}(770){sup 0},K*(892), {Delta}(1232){sup ++}, {sigma}(1385), and {Lambda}(1520) resonances in d+Au collisions at {radical}s{sub NN} = 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 p{sub T}. We observe that the resonance spectra follow a generalized scaling law with the transverse mass m{sub T}. The <p{sub T}> of resonances in minimum bias collisions are compared with the <p{sub T}> of {pi},K and {bar p}. The {rho}{sup 0}/{pi}{sup -}, K{sup +}/K{sup -}, {Delta}{sup ++}/p, {Sigma}(1385)/{Lambda}, and {Lambda}(1520)/{Lambda} 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 (R{sub dAu}) of the {rho}{sup 0},K{sup +}, and {Sigma}{sup +} scale with the number of binary collisions (N{sub bin}) for p{sub T} > 1.2 GeV/c.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: SC; NSF; Swiss NSF
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 964251
• Report Number(s): ANL-HEP-PR-09-83
• Journal Information: Phys. Rev. C, Journal Name: Phys. Rev. C Journal Issue: 2008 Vol. 78; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
BNL
DECAY
HEAVY IONS
MODIFICATIONS
PRODUCTION
RESONANCE
SCALING LAWS
SPECTRA
TRANSVERSE MOMENTUM