Two pion correlations as a possible experimental probe for disoriented chiral condensates

Hideaki Hiro-Oka,Hisakazu Minakata

doi:10.1016/s0370-2693(98)00201-9

Hideaki Hiro-Oka, Hisakazu Minakata

Open Access

https://doi.org/10.1016/s0370-2693(98)00201-9

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Abstract

We discuss two-pion correlations as a possible experimental probe into disoriented chiral condensates. In particular, we point out that the iso-singlet squeezed states of the BCS type have peculiar two-particle correlations in the back-to-back and the identical momentum configurations which should be detectable experimentally. We motivate the examination of the squeezed state by showing that such state naturally appears in a final stage of nonequilibrium phase transitions via the parametric resonance mechanism proposed by Mrówczyński and Müller.

Highlights

We discuss two-pion correlations as a possible experimental probe into disoriented chiral condensates
Let us consider the following possibility: Suppose that disoriented chiral condensate (DCC) forms in hadronic collisions but with a tiny probability, for example 1% or even 0.1%
We propose in this paper that two-pion correlations may serve as a good indicator for DCC.1

Summary

Introduction

We discuss two-pion correlations as a possible experimental probe into disoriented chiral condensates. We explore in this paper a different mechanism which leads to the iso-singlet squeezed state with momentum correlation of the BCS type. Toward the goal we organize this paper in the following two steps: (A) We discuss a concrete model proposed by Mrowczynski and Muller [9] based on the parametric resonance mechanism to draw a physical picture behind the multi-pion squeezed state.

Results

Conclusion