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Multiplicity and pseudorapidity distributions of photons in Au+Au collisions at sNN=62.4GeV

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成果类型:
期刊论文
作者:
Adams, J*;Aggarwal, MM;Ahammed, Z;Amonett, J;Anderson, BD;...
通讯作者:
Adams, J
作者机构:
[Adams, J] Univ Birmingham, Birmingham B15 2TT, W Midlands, England.
Argonne Natl Lab, Argonne, IL 60439 USA.
Univ Bern, CH-3012 Bern, Switzerland.
CALTECH, Pasadena, CA 91125 USA.
Brookhaven Natl Lab, Upton, NY 11973 USA.
通讯机构:
[Adams, J] U
Univ Birmingham, Birmingham B15 2TT, W Midlands, England.
语种:
英文
期刊:
PHYSICAL REVIEW LETTERS
ISSN:
0031-9007
年:
2005
卷:
95
期:
6
页码:
062301
机构署名:
本校为其他机构
院系归属:
物理科学与技术学院
摘要:
We present the first measurement of pseudorapidity distribution of photons in the region 2.3 < or = eta < or = 3.7 for different centralities in Au+Au collisions at square root of (S(NN)) = 62.4 GeV. We find that the photon yield scales with the number of participating nucleons at all collision centralities studied. The pseudorapidity distribution of photons, dominated by pi0 decays, has been compared to those of charged pions, photons, and inclusive charged particles from heavy-ion and nucleon-nucleon collisions at various energies. The photon production has been shown to be consistent with t...

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