Hadronic resonance production in d + Au collisions at sqrt s NN = 200 GeV at RHIC

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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 at RHIC. 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 is compared to the <p{sub T}> of {pi}, K, and {bar p}. The {rho}{sup 0}/{pi}{sup -}, K*/K{sup -}, {Delta}{sup ++}/p, ... continued below

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Coll, STAR August 22, 2008.

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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 at RHIC. 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 is compared to the <p{sub T}> of {pi}, K, and {bar p}. The {rho}{sup 0}/{pi}{sup -}, K*/K{sup -}, {Delta}{sup ++}/p, {Sigma}(1385)/{Lambda}, and {Lambda}(1520)/{Lambda} ratios in d + Au collisions are compared to 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*, and {Sigma}* scale with the number of binary collisions (N{sub bin}) for p{sub T} > 1.2 GeV/c.

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  • Journal Name: Physical Review C

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  • Report No.: LBNL-2104E
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 963031
  • Archival Resource Key: ark:/67531/metadc928608

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  • August 22, 2008

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  • Nov. 13, 2016, 7:26 p.m.

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  • Nov. 18, 2016, 2:47 p.m.

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Coll, STAR. Hadronic resonance production in d + Au collisions at sqrt s NN = 200 GeV at RHIC, article, August 22, 2008; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc928608/: accessed September 25, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.