Abstract
I calculate the transverse momentum distribution for high-energy (p T =1–3 GeV) photons produced in ultra-relativistic nuclear collisions. I assume a strong first-order deconfinement phase transition, and consider transition temperatures in the range 150–200 MeV. For simplicity, I also assume thermal and chemical equilibrium throughout the collision. I then fit the transverse momentum distribution in the range 1–2 GeV to a thermal distribution. The fitting temperature depends only on the transition temperature, so this provides an accurate (although theory-dependent) measure of the QCD transition temperature.
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References
J. Kapusta, P. Lichard, D. Seibert: Phys. Rev. D 44 (1991) 2774
D. Seibert: Phys. Rev. Lett. 68 (1992) 1476
J. D. Bjorken: Phys. Rev. D 27 (1983) 140
D. Seibert: Phys. Rev. Lett. 67 (1991) 12
A. Casher, J. Kogut, L. Susskind: Phys. Rev. D 22 (1974) 732
K. Kajantie, R. Raitio P.V. Ruuskanen: Nucl. Phys. B 222 (1983) 152
H. Nadeau, J. Kapusta, P. Lichard: Phys. Rev. C 45 (1992) 3034
K. Kajantie, P.V. Landshoff, J. Lindfors: Phys. Rev. Lett. 59 (1987) 2627; K.J. Eskola, K. Kajantie, J. Lindfors: Nucl. Phys. B323 (1989) 37
J. Kapusta, L. McLerran, D.K. Srivastava: Phys. Lett. B 283 (1992) 145
D. Seibert, V. K. Mishra, G. Fai: Phys. Rev. C46 (1992) 330
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On leave until 12 October 1993 at: Theory Division, CERN, CH-1211 Geneva 23, Switzerland
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Seibert, D. High-energy photons as a thermometer for ultra-relativistic nuclear collisions. Z. Phys. C - Particles and Fields 58, 307–311 (1993). https://doi.org/10.1007/BF01560350
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DOI: https://doi.org/10.1007/BF01560350