CAS OpenIR  > 中科院上海应用物理研究所2004-2010年
Photon and neutral pion production in Au plus Au collisions at root s(NN)=130 GeV
Adams, J; Adler, C; Aggarwal, MM; Cai, XZ(蔡翔舟); Chen, HF; Chen, Y; Liu, QJ; Ma, YG(马余刚); Wang, XL; Wang, ZM; Zhang, WM; Zhang, ZP; Zoulkarneeva, J; Zubarev, AN
2004
Source PublicationPHYSICAL REVIEW C
ISSN0556-2813
Volume70Issue:4
AbstractWe report inclusive photon measurements about midrapidity (\y\<0.5) from Au-197+Au-197 collisions at roots(NN)=130 GeV at RHIC. Photon pair conversions were reconstructed from electron and positron tracks measured with the Time Projection Chamber (TPC) of the STAR experiment. With this method, an energy resolution of DeltaE/Eapproximate to2% at 0.5 GeV has been achieved. Reconstructed photons have also been used to measure the transverse momentum (p(t)) spectra of pi(0) mesons about midrapidity (\y\<1) via the pi(0)-->gammagamma decay channel. The fractional contribution of the pi(0)-->gammagamma decay to the inclusive photon spectrum decreases by 20%+/-5% between p(t)=1.65 GeV/c and p(t)=2.4 GeV/c in the most central events, indicating that relative to pi(0)-->gammagamma decay the contribution of other photon sources is substantially increasing.
Indexed BySCI
Language中文
Funding Project应物所项目组
WOS IDWOS:000225043100054
Citation statistics
Cited Times:19[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/9428
Collection中科院上海应用物理研究所2004-2010年
Recommended Citation
GB/T 7714
Adams, J,Adler, C,Aggarwal, MM,et al. Photon and neutral pion production in Au plus Au collisions at root s(NN)=130 GeV[J]. PHYSICAL REVIEW C,2004,70(4).
APA Adams, J.,Adler, C.,Aggarwal, MM.,Cai, XZ.,Chen, HF.,...&Zubarev, AN.(2004).Photon and neutral pion production in Au plus Au collisions at root s(NN)=130 GeV.PHYSICAL REVIEW C,70(4).
MLA Adams, J,et al."Photon and neutral pion production in Au plus Au collisions at root s(NN)=130 GeV".PHYSICAL REVIEW C 70.4(2004).
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