Possible evidence of disoriented chiral condensates from the anomaly in 𝛺 and $overline{𝛺}$ abundances at the super proton synchrotron

Pramana

S M H Wong²  J I Kapusta¹ 

[1] School of Physics and Astronomy, University of Minnesota, Minneapolis, MN 55455, USA$$;Department of Physics, Ohio State University, Columbus, OH 43210, USA$$

关键词: Hyperon production;    disoriented chiral condensates;    heavy-ion collisions;    skyrmions.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

No conventional picture of nucleus–nucleus collisions has yet been able to explain the abundance of 𝛺 and $overline{𝛺}$ 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.

【 授权许可】

Unknown