Transverse-Momentum and Collision-Energy Dependence of High-pTHadron Suppression in Au + Au Collisions at Ultrarelativistic Energies

STAR Collaboration

Research output: Contribution to journalArticle

622 Citations (Scopus)

Abstract

We report high statistics measurements of inclusive charged hadron production in Au + Au and p + p collisions at √sNN = 200 GeV. A large, approximately constant hadron suppression is observed in central Au + Au collisions for 5T12 GeV=c. The collision energy dependence of the yields and the centrality and pT dependence of the suppression provide stringent constraints on theoretical models of suppression. Models incorporating initial-state gluon saturation or partonic energy loss in dense matter are largely consistent with observations. We observe no evidence of pT-dependent suppression, which may be expected from models incorporating jet attenuation in cold nuclear matter or scattering of fragmentation hadrons.

Original languageEnglish
Article number172302
Pages (from-to)1723021-1723026
Number of pages6
JournalPhysical Review Letters
Volume91
Issue number17
StatePublished - Oct 24 2003

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transverse momentum
Theoretical Models
retarding
collisions
energy
hadrons
fragmentation
energy dissipation
attenuation
statistics
saturation
scattering

All Science Journal Classification (ASJC) codes

  • Medicine(all)
  • Physics and Astronomy(all)

Cite this

Transverse-Momentum and Collision-Energy Dependence of High-pTHadron Suppression in Au + Au Collisions at Ultrarelativistic Energies. / STAR Collaboration.

In: Physical Review Letters, Vol. 91, No. 17, 172302, 24.10.2003, p. 1723021-1723026.

Research output: Contribution to journalArticle

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abstract = "We report high statistics measurements of inclusive charged hadron production in Au + Au and p + p collisions at √sNN = 200 GeV. A large, approximately constant hadron suppression is observed in central Au + Au collisions for 5T12 GeV=c. The collision energy dependence of the yields and the centrality and pT dependence of the suppression provide stringent constraints on theoretical models of suppression. Models incorporating initial-state gluon saturation or partonic energy loss in dense matter are largely consistent with observations. We observe no evidence of pT-dependent suppression, which may be expected from models incorporating jet attenuation in cold nuclear matter or scattering of fragmentation hadrons.",
author = "{STAR Collaboration} and J. Adams and C. Adler and Aggarwal, {M. M.} and Z. Ahammed and J. Amonett and Anderson, {B. D.} and M. Anderson and D. Arkhipkin and Averichev, {G. S.} and Badyal, {S. K.} and J. Balewski and O. Barannikova and Barnby, {L. S.} and J. Baudot and S. Bekele and Belaga, {V. V.} and R. Bellwied and J. Berger and Bezverkhny, {B. I.} and S. Bhardwaj and P. Bhaskar and Bhati, {A. K.} and H. Bichsel and A. Billmeier and Bland, {L. C.} and Blyth, {C. O.} and Bonner, {B. E.} and M. Botje and A. Boucham and A. Brandin and A. Bravar and Cadman, {R. V.} and Cai, {X. Z.} and H. Caines and {Calder{\'o}n De La Barca S{\'a}nchez}, M. and J. Carroll and J. Castillo and M. Castro and D. Cebra and P. Chaloupka and S. Chattopadhyay and Chen, {H. F.} and Y. Chen and Chernenko, {S. P.} and Cherney, {Michael G.} and A. Chikanian and B. Choi and W. Christie and Coffin, {J. P.} and Seger, {Janet E.}",
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T1 - Transverse-Momentum and Collision-Energy Dependence of High-pTHadron Suppression in Au + Au Collisions at Ultrarelativistic Energies

AU - STAR Collaboration

AU - Adams, J.

AU - Adler, C.

AU - Aggarwal, M. M.

AU - Ahammed, Z.

AU - Amonett, J.

AU - Anderson, B. D.

AU - Anderson, M.

AU - Arkhipkin, D.

AU - Averichev, G. S.

AU - Badyal, S. K.

AU - Balewski, J.

AU - Barannikova, O.

AU - Barnby, L. S.

AU - Baudot, J.

AU - Bekele, S.

AU - Belaga, V. V.

AU - Bellwied, R.

AU - Berger, J.

AU - Bezverkhny, B. I.

AU - Bhardwaj, S.

AU - Bhaskar, P.

AU - Bhati, A. K.

AU - Bichsel, H.

AU - Billmeier, A.

AU - Bland, L. C.

AU - Blyth, C. O.

AU - Bonner, B. E.

AU - Botje, M.

AU - Boucham, A.

AU - Brandin, A.

AU - Bravar, A.

AU - Cadman, R. V.

AU - Cai, X. Z.

AU - Caines, H.

AU - Calderón De La Barca Sánchez, M.

AU - Carroll, J.

AU - Castillo, J.

AU - Castro, M.

AU - Cebra, D.

AU - Chaloupka, P.

AU - Chattopadhyay, S.

AU - Chen, H. F.

AU - Chen, Y.

AU - Chernenko, S. P.

AU - Cherney, Michael G.

AU - Chikanian, A.

AU - Choi, B.

AU - Christie, W.

AU - Coffin, J. P.

AU - Seger, Janet E.

PY - 2003/10/24

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N2 - We report high statistics measurements of inclusive charged hadron production in Au + Au and p + p collisions at √sNN = 200 GeV. A large, approximately constant hadron suppression is observed in central Au + Au collisions for 5T12 GeV=c. The collision energy dependence of the yields and the centrality and pT dependence of the suppression provide stringent constraints on theoretical models of suppression. Models incorporating initial-state gluon saturation or partonic energy loss in dense matter are largely consistent with observations. We observe no evidence of pT-dependent suppression, which may be expected from models incorporating jet attenuation in cold nuclear matter or scattering of fragmentation hadrons.

AB - We report high statistics measurements of inclusive charged hadron production in Au + Au and p + p collisions at √sNN = 200 GeV. A large, approximately constant hadron suppression is observed in central Au + Au collisions for 5T12 GeV=c. The collision energy dependence of the yields and the centrality and pT dependence of the suppression provide stringent constraints on theoretical models of suppression. Models incorporating initial-state gluon saturation or partonic energy loss in dense matter are largely consistent with observations. We observe no evidence of pT-dependent suppression, which may be expected from models incorporating jet attenuation in cold nuclear matter or scattering of fragmentation hadrons.

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