Abstract.
We show that large fluctuations of D-mesons kinetic-energy (or momentum) distributions might be a signature of a phase transition to the Quark-Gluon Plasma (QGP). In particular, a jump in the variance of the momenta or kinetic energy, as a function of a control parameter (temperature or Fermi energy at finite baryon densities) might be a signature for a first-order phase transition to the QGP. This behavior is completely consistent with the order parameter defined for a system of interacting quarks both at zero temperature (and finite baryon densities) or at finite temperatures which shows a jump in correspondence with a first-order phase transition to the QGP. The J/Ψ displays exactly the same behavior of the order parameter and of the variance of the D-mesons. We discuss implications for relativistic heavy-ion collisions within the framework of a transport model and possible hints for experimental search.
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References
C.Y. Wong, Introduction to High-Energy Heavy Ion Collisions (World Scientific Co., Singapore, 1994)
T. Matsui, H. Satz, Phys. Lett. B 178, 416 (1986)
S. Terranova, A. Bonasera, Phys. Rev. C 70, 024906 (2004).
M. Stephanov, K. Rajagopal, E. Shuryak, Phys. Rev. D 60, 114028 (1998)
D.M. Zhou, S. Terranova, A. Bonasera, nucl-th/0501083 and to be submitted.
A. Bonasera, Phys. Rev. C 62, 052202(R) (2000).
M. Papa, T. Maruyama, A. Bonasera, Phys. Rev. C 64, 024612 (2001).
A. Bonasera, Prog. Theor. Phys. Suppl. 154, 261 (2004)
J.L. Richardson, Phys. Lett. B 82, 272 (1979).
F. Karsch, Lect. Notes Phys. 583, 138 (2002).
B.H. Sa, A. Tai, H. Wang, F.H. Liu, Phys. Rev. C 59, 2728 (1999)
M. D'Agostino, Nucl. Phys. A 734, 512 (2004).
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Terranova, S., Zhou, D.M. & Bonasera, A. Large momenta fluctuations of charm quarks in the Quark-Gluon Plasma⋆ . Eur. Phys. J. A 26, 333–337 (2005). https://doi.org/10.1140/epja/i2005-10183-2
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DOI: https://doi.org/10.1140/epja/i2005-10183-2