Suppression of Production in d+Au and Au+Au Collisions at psNN = 200 GeV (2013)
- Authors:
- USP affiliated authors: MUNHOZ, MARCELO GAMEIRO - IF ; SUAIDE, ALEXANDRE ALARCON DO PASSO - IF ; TOLEDO, ALEJANDRO SZANTO DE - IF
- Unidade: IF
- Assunto: COLISÕES DE ÍONS PESADOS RELATIVÍSTICOS
- Language: Inglês
- Abstract: We report measurements of meson production in p+p, d+Au, and Au+Au collisions using the STAR detector at RHIC. We compare the yield to the measured cross section in p+p collisions in order to quantify any modi cations of the yield in cold nuclear matter using d+Au data and in hot nuclear matter using Au+Au data separated into three centrality classes. Our p+p measurement is based on three times the statistics of our previous result. We obtain a nuclear modi cation factor3 for (1S+2S+3S) in the rapidity range jyj < 1 in d+Au collisions of RdAu = 0:67 0:12(stat:) 0:04(sys:) 0:08(p+p sys:). A comparison with models including shadowing and initial state parton energy loss indicates the presence of additional cold-nuclear matter suppression. Similarly, in the top 10% most-central Au+Au collisions, we measure a nuclear modi cation factor of RAA = 0:36 0:09(stat:) 0:01(sys:) 0:04(p+p sys:), which is a larger suppression factor than that seen in cold nuclear matter. Our results are consistent with complete suppression of excited-state mesons in Au+Au collisions. The additional suppression in Au+Au is consistent with the level expected in model calculations that include the presence of a hot, decon ned Quark-Gluon Plasma. However, understanding the suppression seen in d+Au is still needed before any de nitive statements about the nature of the suppression in Au+Au can be made.
- Imprenta:
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ABNT
ADAMCZYK, L et al. Suppression of Production in d+Au and Au+Au Collisions at psNN = 200 GeV. . São Paulo: Instituto de Física, Universidade de São Paulo. Disponível em: http://lanl.arxiv.org/pdf/1312.3675v1.pdf. Acesso em: 10 mar. 2026. , 2013 -
APA
Adamczyk, L., Lima, L. M. de, Munhoz, M. G., Oliveira, R. A. N. de, Souza, U. G. de, Suaide, A. A. do P., & Szanto de Toledo, A. (2013). Suppression of Production in d+Au and Au+Au Collisions at psNN = 200 GeV. São Paulo: Instituto de Física, Universidade de São Paulo. Recuperado de http://lanl.arxiv.org/pdf/1312.3675v1.pdf -
NLM
Adamczyk L, Lima LM de, Munhoz MG, Oliveira RAN de, Souza UG de, Suaide AA do P, Szanto de Toledo A. Suppression of Production in d+Au and Au+Au Collisions at psNN = 200 GeV [Internet]. 2013 ;[citado 2026 mar. 10 ] Available from: http://lanl.arxiv.org/pdf/1312.3675v1.pdf -
Vancouver
Adamczyk L, Lima LM de, Munhoz MG, Oliveira RAN de, Souza UG de, Suaide AA do P, Szanto de Toledo A. Suppression of Production in d+Au and Au+Au Collisions at psNN = 200 GeV [Internet]. 2013 ;[citado 2026 mar. 10 ] Available from: http://lanl.arxiv.org/pdf/1312.3675v1.pdf - Identified particle transverse momentum spectra in p+p and d+Au collisions at ''S IND.NN' POT. 1/2' = 200GeV''
- First measurement of the jet cross section in polarized p+p collisions at "S IND.NN" POT. 1/2" = 200 GeV
- Double longitudinal spin asymmetry in inclusive jet production in polarized p+p collisions at sqrt(s) = 200 GeV
- Strange baryon resonance production in ''S IND.NN' POT. 1/2' = 200 GeV'' p+p and Au+Au collisions
- Inclusive electron distributions at high pt in dAu and pp collisions at RHIC
- Global observables in dAu collisions at 'ANTIPOT. s NN''POT. 1/2' = 200 GeV
- Hadronization geometry from net-charge angular correlations on momentum subspace ("eta", "fi") in Au + Au collisions at ''S IND.NN' POT. 1/2 '= 130 GeV
- Transverse-momentum p(t) correlations on (eta,phi) from mean-p(t) fluctuations in Au-Au collisions at root(s) (NN)=200GeV
- Phi-meson production in heavy-ion collisions at RHIC
- Scaling properties of hyperon production in Au+Au collisions at ''S IND. NN' POT. 1/2'=200 GeV
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