On QGP Formation in pp Collisions at 7 TeV

TL;DR

This paper explores the potential formation of quark-gluon plasma in proton-proton collisions at 7 TeV by analyzing spectra of thermal photons and charged hadrons, comparing models with and without hydrodynamics.

Contribution

It introduces a framework to study QGP formation in pp collisions at high energy, emphasizing the role of hydrodynamical evolution in spectral predictions.

Findings

Spectra suggest possible QGP formation in pp collisions at 7 TeV.

Hydrodynamical models better reproduce the observed spectra.

Centrality dependence indicates conditions conducive to QGP creation.

Abstract

The possibility of QGP formation in central pp collisions at ultra-high collision energy is discussed. Centrality-dependent $\pt$-spectra and (pseudo)rapidity spectra of thermal photons (charged hadrons) from pp collisions at 7 TeV are presented (addressed). Minimal-bias $\pt$-spectrum of direct photons and charged hadrons is compared under the framework with and without hydrodynamical evolution process.