Conveners
Parallel session: Small x
- Armando Bermudez Martinez (CMS (CMS Fachgruppe QCD))
Parallel session: Small x
- Ami Rostomyan (DESY)
The energy dependence of the total hadroproduction cross section for pseudoscalar quarkonia is computed via matching of the NLO Collinear-Factorisation (CF) results with Leading-Logarithmic resummation of higher-order corrections $\propto\alpha_s^{n}\ln^{n-1}(1/z)$ to the CF hard-scattering coefficient, where $z=M^2/\hat{s}$ with $\hat{s}$ being partonic center-of-mass energy squared. The...
Motivated by the Kharzeev-Levin entropy formula which postulates a maximally entangled proton wave function in Deep Inelastic Scattering at low x, we investigate the proposed relation between parton number and final state hadron multiplicity. Contrary to the original formulation we propose to determine partonic entropy from the sum of gluon and quark distribution functions at low x, which we...
We study isolated photon production in the Parton Reggeization Approach with NLO corrections originated from subprocesses of additional parton emissions. Two matching schemes are tested. The first one is based on Kt-ordering of emitted partons during Kt-depended evolution, the second one applies rapidity-ordering for factorization of real parton emissions. We compare our predictions for...
In this talk, we describe the implementation of the kinematical constraint within the Langevin formulation of the JIMWLK equation following the proposal of Hatta and Iancu. We present stability and scaling tests and show first comparisons of the solutions without and with the improvement. We also comment on the rapidity evolution rate of the saturation radius.
In high-energy heavy-ion collisions, a quark-gluon plasma is produced. One way to study this exotic type of matter is to analyze the effect it has on high-energy partons traversing it. This leads to a rich phenomenology that commonly is referred to as jet quenching. High-energy partons propagating in the hot and dense medium mainly experience transverse momentum broadening which leads to...
We perform a twist decomposition of the Balitsky-Kovchegov (BK) amplitude for the proton structure functions in the leading logarithmic limit. Assuming a single iteration of the triple pomeron vertex and using the Mellin space technique we discuss the BK corrections for the leading and subleading twist contributions.
