Physical Implication of the Preliminary Single Photon Spectrum

Ai Xiaobai

Chinese Physics C> 1997, Vol. 21> Issue(10) : 926-931

Physical Implication of the Preliminary Single Photon Spectrum

Ai Xiaobai ^,

Institute of Nuclear research, the Chinese Academy of sciences, Shanghai 201800

Abstract
HTML
Reference
Related

PDF

Abstract：
Based upon the relativistic bydrodynatnics, it is pointed out that although the recent data on the first single-photon spectrum show a linearity, it does not mean that in an ultra-relativistic auclei-auclei collision the system reaches equilibrium at some temperature in whole, making use of a new dynamical mechanism for hadronztion. phase transition, the evaluating results predict that if the phase transition from QGP to badronic matter is of first-order, for higher colliding energies (e.g.>200GeV/u) the photon spectra would show some concave curvature, which may be a possible signature for diagaosiog QGP.

References

[1]

K. Kampert, Electromagnetic Probes of Hot and Dense iNucl/iear Matter, IKP-MS-94/0101, Miinster, 1994.[2]R. Santo iet al/i., iNucl/i. iPhys/i., A566(1994)61c.[3]T. Awes, iNucl/i. iPhys/i., A590(1994)81c.[4]R. Albrecht iet al/i., Limits on the Production of Direct Photons in 200A GeV S + Au Collision,CERN-PPE / 95-186, 13 Dec., 1995.[5]E. Shuryak, L. Xiong, iPhys/i. iLett/i., B333(1994)316.[6]D. Srivastava, B. Sinha, iPhys/i. iRev/i. iLett/i., 73(1994)2421.[7]A. Dumitru iet al/i., Phy. iRev/i., C51(1995)2166.[8]N. Arbex iet al/i., iPhys/i. iLett/i., B345(1995)307.[9]J. Neumann, D. Seibert, G. Fai, iPhys/i. iRev/i., C51(1995)1460.[10]B. Miiller, iNucl/i. iPhys/i., A590(1995)3c.[11]J. Bjorken, iPhys/i. iRev/i., D27(1983)140.[12]L. McLerran, T. Toimela, iPhys/i. iRev/i., D31(1985)545.[13]S. Chakrabarty iet al/i., iPhys/i. iRev/i., D46(1992)3802.[14]M. Neubert, Z. iPhys/i., C42(1989)231.[15]J. Kapusta iet al/i., iPhys/i. iRev/i., D44(1991)2774.[16]L. Xiong, E. Shuryak, G. Brown, iPhys/i. iRev/i., D46(1992)3798.[17]S. Chin, iPhys/i. iLett/i., B119(1982)51.[18]J. Blaizot, J. Ollitrault, iPhys/i. iRev/i., D36(1987)916.[19]J. Kapusta, A. Mekjian, iPhys/i. iRev/i., D33(1986)1304.[20]Hsiao-bai Ai, Baosen Zhou, The Shape of Detected Actual Total High-Energy Photon Spectrum as a Possible Signature of the QuarkGluon Plasma, Proceedings of Sewnd International Symposium on Medium Energy iPhys/iics, Beijing, August 22-26, (1994)398.

[1]	HUANG Wei-Ling , SUN Hong , SHI Hua , LIANG Jia-Ming , GU Jun , LI Xiao , QIU Ying-Wei . Measurements on Different Ferrite Materials. Chinese Physics C, 2008, 32(S1): 212-214.
[2]	DU Shu-Xian , YUAN Chang-Zheng . A Kinematic Fit Method for All-Photon Events. Chinese Physics C, 2006, 30(7): 670-674.
[3]	WU Jun-Xia , XIA Jia-Wen , YANG Jian-Cheng , ZHOU Xue-Mei , LIU Wei , ZHOU Jun , MAO Li-Jun , LIU Yong . Primary Design of Stochastic Cooling in CSRm. Chinese Physics C, 2006, 30(8): 797-801.
[4]	LI Hsiang-Nan . Some Puzzles in B Physics. Chinese Physics C, 2006, 30(12): 1206-1210.
[5]	YIN Zhong-Bao , ZHOU Dai-Cui . Performance of the ALICE PHOS Front-End Electronics. Chinese Physics C, 2006, 30(12): 1165-1170.
[6]	WANG Ya-Ping , CAI Xu . Simulation Studies on the Trigger Decision Criterion of Photon Spectrometer in ALICE Experiment. Chinese Physics C, 2006, 30(7): 606-611.
[7]	ZHANG Chang-Chun , WANG Zhe , YUAN Ye . Reconstruction of Photon Conversions and Precise Measurement of Photon Energy at BESⅡ. Chinese Physics C, 2006, 30(5): 378-386.
[8]	LI Shu-Min , YUAN Chang-Zheng , HE Kang-Lin , FANG Shuang-Shi , WANG Wen-Feng , LU Feng , SHEN Xiao-Yan . Study of Photon Detection Efficiency at BESⅡ. Chinese Physics C, 2004, 28(8): 859-865.
[9]	ZHANG Zhi-Qing , FANG Shuang-Shi , WEI Dai-Hui , ZHU Yu-Can , LU Gong-Ru . η_c Physics at BESⅢ. Chinese Physics C, 2004, 28(6): 569-575.
[10]	WANG ZhaoMin , XU Tong , XU ZiZong , WU Chong . Multi-Photon Correction in the Single Photon Time Measurement. Chinese Physics C, 2000, 24(2): 160-165.
[11]	BES Collaboration . J/ψ Physics at BES. Chinese Physics C, 1999, 23(2): 97-102.
[12]	Han Jiaxiang , Xu Zizong , Chen Hongfang , Li Cheng , Zeng Hui . Single Photon Time Spectra in Gas Avalanches. Chinese Physics C, 1996, 20(10): 885-889.
[13]	ZHANG Tian-Bao , WANG Shu-Ying , WANG Hai-Dong , SHEN Zhi-Qi , MENG Bo-Nian . Precise Measurement of Gamma Ray Energies With HPGE Spectrometer by Slithering Comparison Method. Chinese Physics C, 1993, 17(3): 202-207.
[14]	YANG Bao-Zhong , TAN Yong , TANG Xiao-Wei , BIAN Zu-He . THE ANGULAR DISTRIBUTION OF PHOTONS IN ORTHOPOS-ITRONIUM THREE PHOTON DECAY. Chinese Physics C, 1989, 13(6): 487-489.
[15]	JIA Qi-Ka , TANG Xiao-Wei , YANG Bao-Zhong , LI Yao-Qing , YE Jing-Bo . A MEASUREMENT OF THE LINEAR POLARIZATION OF PHOTONS EMITTED FROM THREE PHOTON ANNIHILATION OF POSITRONS & ELECTRONS. Chinese Physics C, 1987, 11(3): 293-299.
[16]	XU Zai-Xin . POLARIZED PHOTON STRUCTURE FUNCTIONS. Chinese Physics C, 1985, 9(6): 760-764.
[17]	RUAN Tu-Nan , JING Si-Cong , LIU Zu-Wei . LATTICE FORMULATION OF THE PURE GAUGE FIELDS ON COSET SPACE. Chinese Physics C, 1983, 7(5): 550-559.
[18]	SONG XIAO-TONG , WANG MIN-CHANO . THE DOUBLE SPECTRAL FUNCTIONS OF PHOTON-NUCLEON SCATTERING AND INELASTIC CROSS-SECTIONS OF γ+p→p+π⁺+π^-. Chinese Physics C, 1981, 5(3): 282-291.
[19]	LIU HAN-ZHAO . FINESTRUCTURES OF INCLUSIVE SPECTRA (Ⅱ)——CALCULATED PRELIMINARILY USING MODELS,AND TO BE DETERMINED USING EXISTING DATA. Chinese Physics C, 1979, 3(2): 131-140.
[20]	NUCLEAR PHYSICS RESEARCH LABORATORY . HEAVY ION RESEARCHES IN LANCHOW. Chinese Physics C, 1977, 1(1): 65-69.

Access

Get Citation

Ai Xiaobai. Physical Implication of the Preliminary Single Photon Spectrum[J]. Chinese Physics C, 1997, 21(10): 926-931.

Ai Xiaobai. Physical Implication of the Preliminary Single Photon Spectrum[J]. Chinese Physics C, 1997, 21(10): 926-931. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 1900-01-01
Revised: 1900-01-01

Article Metric

Article Views(2301)
PDF Downloads(522)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Physical Implication of the Preliminary Single Photon Spectrum

Ai Xiaobai ^,

Corresponding author: Ai Xiaobai,

Institute of Nuclear research, the Chinese Academy of sciences, Shanghai 201800

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1997-10-05

Abstract: Based upon the relativistic bydrodynatnics, it is pointed out that although the recent data on the first single-photon spectrum show a linearity, it does not mean that in an ultra-relativistic auclei-auclei collision the system reaches equilibrium at some temperature in whole, making use of a new dynamical mechanism for hadronztion. phase transition, the evaluating results predict that if the phase transition from QGP to badronic matter is of first-order, for higher colliding energies (e.g.>200GeV/u) the photon spectra would show some concave curvature, which may be a possible signature for diagaosiog QGP.