1203.6679 (V. Topor Pop et al.)

Can hyperon/meson ratios in rare high multiplicity pp collisions at
Large Hadron Collider energies provide signatures of mini-quark-gluon plasma
formation?    [PDF]

V. Topor Pop, M. Gyulassy, J. Barrette, C. Gale, A. Warburton

We use the framework of the HIJING/B\=B v2.0 model to simulate high-multiplicity (HM) p+p collision events at the LHC to study observables sensitive to possible novel collective phenomena, such as strong longitudinal color fields (SLCF) modeled by an enhanced string tension (kappa) or the formation of an equilibrated color deconfined mini quark-gluon plasma mQGP. We focus on the hyperon/meson yield ratios in rare high multiplicity p+p collisions at center-of-mass energy sqrt(s) = 7 TeV, in the transverse momentum region, 0 < p_T < 3 GeV/c. We compare minimum bias (MB) events to simulated HM events assuming that kappa(MB)=3 GeV/fm grows to kappa(HM)=5 GeV/fm. We propose that saturation of (multi)strange baryon/meson ratios similar to those predicted assuming strangeness equilibrated mQGP may be reached in HM events.

View original: http://arxiv.org/abs/1203.6679