Abstract
No conventional picture of nucleus-nucleus collisions has yet been able to explain the abundance of Ω and -Ω. in central collisions between Pb nuclei at 158 A GeV at the CERN SPS. We argue that such a deviation from predictions of statistical thermal models and numerical simulations is the evidence that they are produced as topological defects in the form of skyrmions arising from the formation of disoriented chiral condensates. The estimated domain size falls in the right range to be consistent with the so far non-observation of disoriented chiral condensate (DCC) from the distribution of neutral pions.
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References
A A Anselm,Phys. Lett. B217, 169 (1989)
J-P Blaizot and A Krzywicki,Phys. Rev. D46, 246 (1992)
J D Bjorken, K L Kowalski and C C Taylor, in Results and perspectives in particle physics, 1993,Proc. 7th Les Rencontres de Physique de la Vallee d’Aoste, La Thuile, Italy, 1993 edited by M Greco (Editions Frontieres, Gif-sur-Yvette, France, 1993)
J Rafelski and J Letessier, nucl-th/9903018
L Sándoret al, Nucl. Phys. A661, 481c (1999)
F Antinoriet al, Euro. J. Phys. C14, 633 (2000)
S Soff, S A Bass, M Bleicher, L Bravina, E Zabrodin, H Stöcker and W Greiner,Phys. Lett. B471, 89 (1999)
G Torrieri and J Rafelski,New J. Phys. 3, 12.1 (2001)
T H R Skyrme,Nucl. Phys. 31, 556 (1962)
E Witten,Nucl. Phys. B223, 422 (1983)
E Witten,Nucl. Phys. B223, 433 (1983)
J I Kapusta and A M Srivastava,Phys. Rev. D52, 2977 (1995)
D N Spergelet al, Phys. Rev. D43, 1038 (1991)
R A Leese and T Prokopec,Phys. Rev. D44, 3749 (1991)
J I Kapusta and S M H Wong,Phys. Rev. Lett. 86, 4251 (2001)
J Ellis and H Kowalski,Phys. Lett. B214, 161 (1988)
J Ellis and H Kowalski,Nucl. Phys. B327, 32 (1989)
J Ellis, U Heinz and H Kowalski,Phys. Lett. B233, 223 (1989)
R Caliandroet al, J. Phys. G25, 171 (1999)
S Margetiset al, J. Phys. G25, 189 (1999)
F Gableret al, J. Phys. G25, 199 (1999)
F Becattini, J Cleymanset al, Phys. Rev. C64, 24901 (2001)
K Rajagopal and F Wilczek,Nucl. Phys. B399, 395 (1993)
S Gavin and B Müller,Phys. Lett. B329, 486 (1994)
V Koch, B Müller and J Rafelski,Phys. Rep. 142, 167 (1986)
P Braun-Munzinger, I Heppe and J Stachel,Phys. Lett. B465, 15 (1999)
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Kapusta, J.I., Wong, S.M.H. Possible evidence of disoriented chiral condensates from the anomaly in Ω. and -Ω abundances at the super proton synchrotron. Pramana - J Phys 60, 1099–1102 (2003). https://doi.org/10.1007/BF02707038
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DOI: https://doi.org/10.1007/BF02707038