منابع مشابه
High-energy resummation in direct photon production
We present the computation of the direct photon production cross-section in perturbative QCD to all orders in the limit of high partonic center-of-mass energy. We show how the high-energy resummation can be performed consistently in the presence of a collinear singularity in the final state, we compare our results to the fixed order NLO cross-section in MS scheme, and we provide predictions at ...
متن کاملPhoton production in high energy proton-nucleus collisions
We calculate the photon production cross-section in pA collisions under the assumption that the nucleus has reached the saturation regime, while the proton can be described by the standard parton distribution functions. We show that due to the strong classical field O(1/g) of the nucleus, bremsstrahlung diagrams become dominant over the direct photon diagrams. In particular, we show that γ−jet ...
متن کاملPhoton + Hadron Production in High Energy Deuteron (Proton)-Nucleus Collisions
We apply the Color Glass Condensate formalism to photon + hadron production cross section in high energy deuteron (proton)-gold collisions at RHIC. We investigate the dependence of the production cross section on the angle between the produced hadron and photon for various rapidities and transverse momenta. It is shown that the angular correlation between the produced hadron and photon is a sen...
متن کاملNuclear Effects in High Energy Photon and Neutral Pion Production
The nuclear enhancement of particle production, known as the Cronin effect, 1 received recent experimental attention by E706, 2 studying the high pT pion and direct photon production. In this talk we concentrate on direct photon and neutral pion production and propose a new physical mechanism responsible for the increase of the production rate in nuclear targets. Parton cross sections are calcu...
متن کاملThermal photon production in high-energy nuclear collisions.
We use a boost-invariant one-dimensional (cylindrically symmetric) fluid dynamics code to calculate thermal photon production in the central rapidity region of S+Au and Pb+Pb collisions at SPS energy ( √ s = 20 GeV/nucleon). We assume that the hot matter is in thermal equilibrium throughout the expansion, but consider deviations from chemical equilibrium in the high temperature (deconfined) pha...
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ژورنال
عنوان ژورنال: Il Nuovo Cimento
سال: 1955
ISSN: 0029-6341,1827-6121
DOI: 10.1007/bf02725034