The parton bubble model compared to central Au Au collisions (0% to 5%) at $\sqrt{s_{NN}}$=200 GeV

TL;DR

This paper reviews the Parton Bubble Model's explanation of RHIC collision data, linking it to Glasma Flux Tube Model predictions of gluonic hot spots and local CP violation effects in high-energy heavy-ion collisions.

Contribution

It connects the PBM with the GFTM, providing a unified description of particle correlations, source size, and CP violation in central Au Au collisions at 200 GeV.

Findings

PBM accurately explains RHIC correlation data within a few percent.

Surface emission from bubbles is essential for matching experimental observations.

Gluonic flux tubes in GFTM relate to bubble formation and CP violation effects.

Abstract

In an earlier paper we developed a Parton Bubble Model (PBM) for RHIC, high-energy heavy-ion collisions. PBM was based on a substructure of a ring of localized bubbles (gluonic hot spots) which initially contain 3-4 partons composed of almost entirely gluons. The bubbles emitted correlated particles at kinetic freezeout, leading to a lumpy fireball surface. For a selection of charged particles (0.8 GeV/c $<$ $p_t$ $<$ 4.0 GeV/c), the PBM reasonably quantitatively (within a few percent) explained high precision RHIC experimental correlation analyses in a manner which was consistent with the small observed HBT source size in this transverse momentum range. We demonstrated that surface emission from a distributed set of surface sources (as in the PBM) was necessary to obtain this consistency. In this paper we give a review of the above comparison to central Au Au collisions. The bubble formation can be associated with gluonic objects predicted by a Glasma Flux Tube Model (GFTM) that formed longitudinal flux tubes in the transverse plane of two colliding sheets of Color Glass Condensate (CGC), which pass through one another. These sheets create boost invariant flux tubes of longitudinal color electric and magnetic fields. A blast wave gives the tubes near the surface transverse flow in the same way it gave transverse flow to the bubbles in the PBM. In the GFTM the longitudinal color electric and magnetic fields have a non-zero topological charge density $F \widetilde F$. These fields cause a local strong CP violation which effects charged particle production coming from quarks and anti-quarks created in the tube or bubble.