Centrality dependence of charged hadron transverse momentum spectra in Au + Au collisions from √SNN = 62.4 to 200 GeV

B. B. Back; M. D. Baker; M. Ballintijn; D. S. Barton; R. R. Betts; A. A. Bickley; R. Bindel; W. Busza; A. Carroll; Z. Chai; M. P. Decowski; E. García; T. Gburek; N. George; K. Gulbrandsen; C. Halliwell; J. Hamblen; M. Hauer; C. Henderson; D. J. Hofman; R. S. Hollis; R. Hotyński; B. Holzman; A. Lordanova; E. Johnson; J. L. Kane; N. Khan; P. Kulinich; C. M. Kuo; W. T. Lin; S. Manly; A. C. Mignerey; R. Nouicer; A. Olszewski; R. Pak; C. Reed; C. Roland; G. Roland; J. Sagerer; H. Seals; I. Sedykh; C. E. Smith; M. A. Stankiewicz; P. Steinberg; G. S.F. Stephans; A. Sukhanov; M. B. Tonjes; A. Trzupek; C. Vale; G. J. Van Nieuwenhuizen; S. S. Vaurynovich; R. Verdier; G. I. Veres; E. Wenger; F. L.H. Wolfs; B. Wosiek; K. Woźniak; B. Wyslouch

doi:10.1103/PhysRevLett.94.082304

Centrality dependence of charged hadron transverse momentum spectra in Au + Au collisions from √S_NN = 62.4 to 200 GeV

B. B. Back, M. D. Baker, M. Ballintijn, D. S. Barton, R. R. Betts, A. A. Bickley, R. Bindel, W. Busza, A. Carroll, Z. Chai, M. P. Decowski, E. García, T. Gburek, N. George, K. Gulbrandsen, C. Halliwell, J. Hamblen, M. Hauer, C. Henderson, D. J. HofmanR. S. Hollis, R. Hotyński, B. Holzman, A. Lordanova, E. Johnson, J. L. Kane, N. Khan, P. Kulinich, C. M. Kuo, W. T. Lin, S. Manly, A. C. Mignerey, R. Nouicer, A. Olszewski, R. Pak, C. Reed, C. Roland, G. Roland, J. Sagerer, H. Seals, I. Sedykh, C. E. Smith, M. A. Stankiewicz, P. Steinberg, G. S.F. Stephans, A. Sukhanov, M. B. Tonjes, A. Trzupek, C. Vale, G. J. Van Nieuwenhuizen, S. S. Vaurynovich, R. Verdier, G. I. Veres, E. Wenger, F. L.H. Wolfs, B. Wosiek, K. Woźniak, B. Wyslouch

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Abstract

We have measured transverse momentum distributions of charged hadrons produced in Au + Au collisions at √S_NN = 62.4 GeV. The spectra are presented for transverse momenta 0.25 < p_T < 4.5 GeV/c, in a pseudorapidity range of 0.2 < η < 1.4. The nuclear modification factor R_AA is calculated relative to p + p data at the same collision energy as a function of collision centrality. For 2 < p_T < 4.5 GeV/c, R_AA is found to be significantly larger than in Au + Au collisions at √S_NN =130 and 200 GeV. In contrast to the large change in R_AA, we observe a very similar centrality evolution of the p_T spectra at √S_NN = 62.4 and 200 GeV. The dynamical origin of this surprising factorization of energy and centrality dependence of particle production in heavy-ion collisions remains to be understood.

Original language	English
Article number	082304
Journal	Physical Review Letters
Volume	94
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevLett.94.082304
State	Published - 4 Mar 2005

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10.1103/PhysRevLett.94.082304

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Back, B. B., Baker, M. D., Ballintijn, M., Barton, D. S., Betts, R. R., Bickley, A. A., Bindel, R., Busza, W., Carroll, A., Chai, Z., Decowski, M. P., García, E., Gburek, T., George, N., Gulbrandsen, K., Halliwell, C., Hamblen, J., Hauer, M., Henderson, C., ... Wyslouch, B. (2005). Centrality dependence of charged hadron transverse momentum spectra in Au + Au collisions from √S_NN = 62.4 to 200 GeV. Physical Review Letters, 94(8), [082304]. https://doi.org/10.1103/PhysRevLett.94.082304

@article{8abbf5a0a4bd469d9f560a657f14b489,

title = "Centrality dependence of charged hadron transverse momentum spectra in Au + Au collisions from √SNN = 62.4 to 200 GeV",

abstract = "We have measured transverse momentum distributions of charged hadrons produced in Au + Au collisions at √SNN = 62.4 GeV. The spectra are presented for transverse momenta 0.25 < pT < 4.5 GeV/c, in a pseudorapidity range of 0.2 < η < 1.4. The nuclear modification factor RAA is calculated relative to p + p data at the same collision energy as a function of collision centrality. For 2 < pT < 4.5 GeV/c, RAA is found to be significantly larger than in Au + Au collisions at √SNN =130 and 200 GeV. In contrast to the large change in RAA, we observe a very similar centrality evolution of the pT spectra at √SNN = 62.4 and 200 GeV. The dynamical origin of this surprising factorization of energy and centrality dependence of particle production in heavy-ion collisions remains to be understood.",

author = "Back, {B. B.} and Baker, {M. D.} and M. Ballintijn and Barton, {D. S.} and Betts, {R. R.} and Bickley, {A. A.} and R. Bindel and W. Busza and A. Carroll and Z. Chai and Decowski, {M. P.} and E. Garc{\'i}a and T. Gburek and N. George and K. Gulbrandsen and C. Halliwell and J. Hamblen and M. Hauer and C. Henderson and Hofman, {D. J.} and Hollis, {R. S.} and R. Hoty{\'n}ski and B. Holzman and A. Lordanova and E. Johnson and Kane, {J. L.} and N. Khan and P. Kulinich and Kuo, {C. M.} and Lin, {W. T.} and S. Manly and Mignerey, {A. C.} and R. Nouicer and A. Olszewski and R. Pak and C. Reed and C. Roland and G. Roland and J. Sagerer and H. Seals and I. Sedykh and Smith, {C. E.} and Stankiewicz, {M. A.} and P. Steinberg and Stephans, {G. S.F.} and A. Sukhanov and Tonjes, {M. B.} and A. Trzupek and C. Vale and {Van Nieuwenhuizen}, {G. J.} and Vaurynovich, {S. S.} and R. Verdier and Veres, {G. I.} and E. Wenger and Wolfs, {F. L.H.} and B. Wosiek and K. Wo{\'z}niak and B. Wyslouch",

year = "2005",

month = mar,

day = "4",

doi = "10.1103/PhysRevLett.94.082304",

language = "???core.languages.en_GB???",

volume = "94",

journal = "Physical Review Letters",

issn = "0031-9007",

number = "8",

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Back, BB, Baker, MD, Ballintijn, M, Barton, DS, Betts, RR, Bickley, AA, Bindel, R, Busza, W, Carroll, A, Chai, Z, Decowski, MP, García, E, Gburek, T, George, N, Gulbrandsen, K, Halliwell, C, Hamblen, J, Hauer, M, Henderson, C, Hofman, DJ, Hollis, RS, Hotyński, R, Holzman, B, Lordanova, A, Johnson, E, Kane, JL, Khan, N, Kulinich, P, Kuo, CM , Lin, WT, Manly, S, Mignerey, AC, Nouicer, R, Olszewski, A, Pak, R, Reed, C, Roland, C, Roland, G, Sagerer, J, Seals, H, Sedykh, I, Smith, CE, Stankiewicz, MA, Steinberg, P, Stephans, GSF, Sukhanov, A, Tonjes, MB, Trzupek, A, Vale, C, Van Nieuwenhuizen, GJ, Vaurynovich, SS, Verdier, R, Veres, GI, Wenger, E, Wolfs, FLH, Wosiek, B, Woźniak, K & Wyslouch, B 2005, 'Centrality dependence of charged hadron transverse momentum spectra in Au + Au collisions from √S_NN = 62.4 to 200 GeV', Physical Review Letters, vol. 94, no. 8, 082304. https://doi.org/10.1103/PhysRevLett.94.082304

TY - JOUR

T1 - Centrality dependence of charged hadron transverse momentum spectra in Au + Au collisions from √SNN = 62.4 to 200 GeV

AU - Back, B. B.

AU - Baker, M. D.

AU - Ballintijn, M.

AU - Barton, D. S.

AU - Betts, R. R.

AU - Bickley, A. A.

AU - Bindel, R.

AU - Busza, W.

AU - Carroll, A.

AU - Chai, Z.

AU - Decowski, M. P.

AU - García, E.

AU - Gburek, T.

AU - George, N.

AU - Gulbrandsen, K.

AU - Halliwell, C.

AU - Hamblen, J.

AU - Hauer, M.

AU - Henderson, C.

AU - Hofman, D. J.

AU - Hollis, R. S.

AU - Hotyński, R.

AU - Holzman, B.

AU - Lordanova, A.

AU - Johnson, E.

AU - Kane, J. L.

AU - Khan, N.

AU - Kulinich, P.

AU - Kuo, C. M.

AU - Lin, W. T.

AU - Manly, S.

AU - Mignerey, A. C.

AU - Nouicer, R.

AU - Olszewski, A.

AU - Pak, R.

AU - Reed, C.

AU - Roland, C.

AU - Roland, G.

AU - Sagerer, J.

AU - Seals, H.

AU - Sedykh, I.

AU - Smith, C. E.

AU - Stankiewicz, M. A.

AU - Steinberg, P.

AU - Stephans, G. S.F.

AU - Sukhanov, A.

AU - Tonjes, M. B.

AU - Trzupek, A.

AU - Vale, C.

AU - Van Nieuwenhuizen, G. J.

AU - Vaurynovich, S. S.

AU - Verdier, R.

AU - Veres, G. I.

AU - Wenger, E.

AU - Wolfs, F. L.H.

AU - Wosiek, B.

AU - Woźniak, K.

AU - Wyslouch, B.

PY - 2005/3/4

Y1 - 2005/3/4

N2 - We have measured transverse momentum distributions of charged hadrons produced in Au + Au collisions at √SNN = 62.4 GeV. The spectra are presented for transverse momenta 0.25 < pT < 4.5 GeV/c, in a pseudorapidity range of 0.2 < η < 1.4. The nuclear modification factor RAA is calculated relative to p + p data at the same collision energy as a function of collision centrality. For 2 < pT < 4.5 GeV/c, RAA is found to be significantly larger than in Au + Au collisions at √SNN =130 and 200 GeV. In contrast to the large change in RAA, we observe a very similar centrality evolution of the pT spectra at √SNN = 62.4 and 200 GeV. The dynamical origin of this surprising factorization of energy and centrality dependence of particle production in heavy-ion collisions remains to be understood.

AB - We have measured transverse momentum distributions of charged hadrons produced in Au + Au collisions at √SNN = 62.4 GeV. The spectra are presented for transverse momenta 0.25 < pT < 4.5 GeV/c, in a pseudorapidity range of 0.2 < η < 1.4. The nuclear modification factor RAA is calculated relative to p + p data at the same collision energy as a function of collision centrality. For 2 < pT < 4.5 GeV/c, RAA is found to be significantly larger than in Au + Au collisions at √SNN =130 and 200 GeV. In contrast to the large change in RAA, we observe a very similar centrality evolution of the pT spectra at √SNN = 62.4 and 200 GeV. The dynamical origin of this surprising factorization of energy and centrality dependence of particle production in heavy-ion collisions remains to be understood.

UR - http://www.scopus.com/inward/record.url?scp=18244369755&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.94.082304

DO - 10.1103/PhysRevLett.94.082304

M3 - 期刊論文

AN - SCOPUS:18244369755

SN - 0031-9007

VL - 94

JO - Physical Review Letters

JF - Physical Review Letters

IS - 8

M1 - 082304

ER -

Centrality dependence of charged hadron transverse momentum spectra in Au + Au collisions from √SNN = 62.4 to 200 GeV

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Centrality dependence of charged hadron transverse momentum spectra in Au + Au collisions from √S_NN = 62.4 to 200 GeV