Gluino production in ultrarelativistic heavy ion collisions and nuclear shadowing

Abstract

In this article we investigate the influence of nuclear effects in the production of gluinos in nuclear collisions at the LHC, and estimate the transverse momentum dependence of the nuclear ratios $R_{pA}=\frac{d\sigma (pA)}{dy{d}^2{p}_T}/A\frac{d\sigma (pp)}{dy{d}^2{p}_T}$ and $R_{AA}=\frac{d\sigma (AA)}{dy{d}^2{p}_T}/A^2\frac{d\sigma (pp)}{dy{d}^2{p}_T}$. We demonstrate that depending on the magnitude of the nuclear effects, the production of gluinos could be enhanced, compared to proton-proton collisions. The study of these observables can be useful to determine the magnitude of the shadowing and antishadowing effects in the nuclear gluon distribution. Moreover, we test different SPS scenarios, corresponding to different soft SUSY breaking mechanisms, and find that the nuclear ratios are strongly dependent on that choice.

7 pages, 5 figures; results and discussions changed/added. Accepted for publication in Physical Review C

References in corpus (5)

• EPS09 - a New Generation of NLO and LO Nuclear Parton Distribution Functions
• Determination of nuclear parton distribution functions and their uncertainties at next-to-leading order
• Quark-Gluon Matter
• Nuclear shadowing and prompt photons at relativistic hadron colliders
• Nuclear Medium Effects in $J/\Psi$ Production at HERA-B