Suppression of high-pT neutral pion production in central Pb+Pb collisions at √sNN=17.3 GeV relative to p+C and p+Pb collisions

被引：24

作者：

Aggarwal, M. M. ^{[1
]}

Ahammed, Z. ^{[2
]}

Angelis, A. L. S. ^{[3
]}

Antonenko, V. ^{[4
]}

Arefiev, V. ^{[5
]}

Astakhov, V. ^{[5
]}

Avdeitchikov, V. ^{[5
]}

Awes, T. C. ^{[6
]}

Baba, P. V. K. S. ^{[7
]}

Badyal, S. K. ^{[7
]}

Bathe, S.

Batiounia, B. ^{[5
]}

Baumann, C. ^{[8
]}

Bernier, T. ^{[9
]}

Bhalla, K. B. ^{[10
]}

Bhatia, V. S. ^{[1
]}

Blume, C. ^{[8
]}

Bucher, D. ^{[8
]}

Buesching, H. ^{[8
]}

Carlen, L. ^{[11
]}

Chattopadhyay, S. ^{[2
]}

Decowski, M. P. ^{[12
]}

Delagrange, H. ^{[9
]}

Donni, P.

Majumdar, M. R. Dutta ^{[2
]}

El Chenawi, K. ^{[11
]}

Dubey, A. K.

Enosawa, K. ^{[13
]}

Fokin, S. ^{[4
]}

Frolov, V. ^{[5
]}

Ganti, M. S. ^{[2
]}

Garpman, S. ^{[11
]}

Gavrishchuk, O. ^{[5
]}

Geurts, F. J. M. ^{[14
]}

Ghosh, T. K. ^{[15
]}

Glasow, R. ^{[8
]}

Guskov, B. ^{[5
]}

Gustafsson, H. A. ^{[11
]}

Gutbrod, H. H. ^{[16
]}

Hrivnacova, I. ^{[17
]}

Ippolitov, M.

Kalechofsky, H. ^{[3
]}

Kamermans, R. ^{[14
]}

Karadjev, K. ^{[4
]}

Karpio, K. ^{[18
]}

Kolb, B. W. ^{[16
]}

Kosarev, I. ^{[5
]}

Koutcheryaev, I. ^{[4
]}

Kugler, A. ^{[17
]}

Kulinich, P. ^{[12
]}

机构：

[1] Panjab Univ, Chandigarh 160014, India

[2] Bhabha Atom Res Ctr, Ctr Variable Energy Cyclotron, Kolkata 700064, W Bengal, India

[3] Univ Geneva, CH-1211 Geneva 4, Switzerland

[4] RRC Kurchatov Inst, RU-123182 Moscow, Russia

[5] Joint Inst Nucl Res, RU-141980 Dubna, Russia

[6] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[7] Univ Jammu, Jammu 180001, India

[8] Univ Munster, D-48149 Munster, Germany

[9] SUBATECH, Ecole Mines, Nantes, France

[10] Univ Rajasthan, Jaipur 302004, Rajasthan, India

[11] Lund Univ, SE-22100 Lund, Sweden

[12] MIT, Cambridge, MA 02139 USA

[13] Univ Tsukuba, Tsukuba 305, Japan

[14] Univ Utrecht, NIKHEF, NL-3508 TA Utrecht, Netherlands

[15] Univ Groningen, KVI, NL-9747 AA Groningen, Netherlands

[16] Gesell Schwerionenforsch Inst Darmstadt, D-64220 Darmstadt, Germany

[17] Nucl Res Inst, CZ-25068 Rez, Czech Republic

[18] Inst Nucl Studies, PL-00681 Warsaw, Poland

[19] Univ Tennessee, Knoxville, TN 37966 USA

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.100.242301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Neutral pion transverse momentum spectra were measured in p+C and p+Pb collisions at root s(NN) = 17.4 GeV at midrapidity (2.3 less than or similar to eta(lab)less than or similar to 3.0) over the range 0.7 less than or similar to p(T)less than or similar to 3.5 GeV/c. The spectra are compared to pi(0) spectra measured in Pb+Pb collisions at root s(NN) = 17.3 GeV in the same experiment. For a wide range of Pb+Pb centralities (N-part less than or similar to 300), the yield of pi(0)'s with p(T)greater than or similar to 2 GeV/c is larger than or consistent with the p+C or p+Pb yields scaled with the number of nucleon-nucleon collisions (N-coll), while for central Pb+Pb collisions with N-part greater than or similar to 350, the pi(0) yield is suppressed.

引用

页数：5

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