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Title: Suppression of High-p{sub T} Neutral Pion Production in Central Pb+Pb Collisions at {radical}(s{sub NN})=17.3 GeV Relative to p+C and p+Pb Collisions

Abstract

Neutral pion transverse momentum spectra were measured in p+C and p+Pb collisions at {radical}(s{sub NN})=17.4 GeV at midrapidity (2.3 < or approx. {eta}{sub lab} < or approx. 3.0) over the range 0.7 < or approx. p{sub T} < or approx. 3.5 GeV/c. The spectra are compared to {pi}{sup 0} spectra measured in Pb+Pb collisions at {radical}(s{sub NN})=17.3 GeV in the same experiment. For a wide range of Pb+Pb centralities (N{sub part} < or approx. 300), the yield of {pi}{sup 0}'s with p{sub T} > or approx. 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{sub coll}), while for central Pb+Pb collisions with N{sub part} > or approx. 350, the {pi}{sup 0} yield is suppressed.

Authors:
; ;  [1]; ; ; ; ; ; ; ;  [2]; ; ; ; ; ; ; ;  [3];  [4]
  1. University of Panjab, Chandigarh 160014 (India)
  2. Variable Energy Cyclotron Centre, Calcutta 700064 (India)
  3. University of Geneva, CH-1211 Geneva 4 (Switzerland)
  4. RRC Kurchatov Institute, RU-123182 Moscow (Russian Federation)
Publication Date:
OSTI Identifier:
21134046
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 100; Journal Issue: 24; Other Information: DOI: 10.1103/PhysRevLett.100.242301; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA). WA98 Collaboration; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; COLLIDING BEAMS; GEV RANGE 01-10; GEV RANGE 10-100; LEAD 208 BEAMS; LEAD 208 REACTIONS; LEAD 208 TARGET; NUCLEON-NUCLEON INTERACTIONS; PIONS NEUTRAL; PROTON REACTIONS; SPECTRA; TRANSVERSE MOMENTUM

Citation Formats

Aggarwal, M M, Bhatia, V S, Sood, G, Ahammed, Z, Chattopadhyay, S, Majumdar, M R. Dutta, Ganti, M S, Mukhopadhyay, D S, Nayak, T K, Sinha, B C, Viyogi, Y P, Angelis, A L. S., Donni, P, Kalechofsky, H, Martin, M, Naef, H, Rosselet, L, Rubio, J M, Voeroes, S, and Antonenko, V. Suppression of High-p{sub T} Neutral Pion Production in Central Pb+Pb Collisions at {radical}(s{sub NN})=17.3 GeV Relative to p+C and p+Pb Collisions. United States: N. p., 2008. Web. doi:10.1103/PHYSREVLETT.100.242301.
Aggarwal, M M, Bhatia, V S, Sood, G, Ahammed, Z, Chattopadhyay, S, Majumdar, M R. Dutta, Ganti, M S, Mukhopadhyay, D S, Nayak, T K, Sinha, B C, Viyogi, Y P, Angelis, A L. S., Donni, P, Kalechofsky, H, Martin, M, Naef, H, Rosselet, L, Rubio, J M, Voeroes, S, & Antonenko, V. Suppression of High-p{sub T} Neutral Pion Production in Central Pb+Pb Collisions at {radical}(s{sub NN})=17.3 GeV Relative to p+C and p+Pb Collisions. United States. https://doi.org/10.1103/PHYSREVLETT.100.242301
Aggarwal, M M, Bhatia, V S, Sood, G, Ahammed, Z, Chattopadhyay, S, Majumdar, M R. Dutta, Ganti, M S, Mukhopadhyay, D S, Nayak, T K, Sinha, B C, Viyogi, Y P, Angelis, A L. S., Donni, P, Kalechofsky, H, Martin, M, Naef, H, Rosselet, L, Rubio, J M, Voeroes, S, and Antonenko, V. 2008. "Suppression of High-p{sub T} Neutral Pion Production in Central Pb+Pb Collisions at {radical}(s{sub NN})=17.3 GeV Relative to p+C and p+Pb Collisions". United States. https://doi.org/10.1103/PHYSREVLETT.100.242301.
@article{osti_21134046,
title = {Suppression of High-p{sub T} Neutral Pion Production in Central Pb+Pb Collisions at {radical}(s{sub NN})=17.3 GeV Relative to p+C and p+Pb Collisions},
author = {Aggarwal, M M and Bhatia, V S and Sood, G and Ahammed, Z and Chattopadhyay, S and Majumdar, M R. Dutta and Ganti, M S and Mukhopadhyay, D S and Nayak, T K and Sinha, B C and Viyogi, Y P and Angelis, A L. S. and Donni, P and Kalechofsky, H and Martin, M and Naef, H and Rosselet, L and Rubio, J M and Voeroes, S and Antonenko, V},
abstractNote = {Neutral pion transverse momentum spectra were measured in p+C and p+Pb collisions at {radical}(s{sub NN})=17.4 GeV at midrapidity (2.3 < or approx. {eta}{sub lab} < or approx. 3.0) over the range 0.7 < or approx. p{sub T} < or approx. 3.5 GeV/c. The spectra are compared to {pi}{sup 0} spectra measured in Pb+Pb collisions at {radical}(s{sub NN})=17.3 GeV in the same experiment. For a wide range of Pb+Pb centralities (N{sub part} < or approx. 300), the yield of {pi}{sup 0}'s with p{sub T} > or approx. 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{sub coll}), while for central Pb+Pb collisions with N{sub part} > or approx. 350, the {pi}{sup 0} yield is suppressed.},
doi = {10.1103/PHYSREVLETT.100.242301},
url = {https://www.osti.gov/biblio/21134046}, journal = {Physical Review Letters},
issn = {0031-9007},
number = 24,
volume = 100,
place = {United States},
year = {Fri Jun 20 00:00:00 EDT 2008},
month = {Fri Jun 20 00:00:00 EDT 2008}
}