Your browser has javascript turned off or blocked. This will lead to some parts of our website to not work properly or at all. Turn on javascript for best performance.

The browser you are using is not supported by this website. All versions of Internet Explorer are no longer supported, either by us or Microsoft (read more here: https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Please use a modern browser to fully experience our website, such as the newest versions of Edge, Chrome, Firefox or Safari etc.

Typical working day..

Roman Pasechnik

Senior lecturer

Typical working day..

Systematic study of real photon and Drell-Yan pair production in p+A (d+A) interactions

Author

  • M. Krelina
  • Eduardo Flach Basso
  • V. P. Goncalves
  • J. Nemchik
  • R. Pasechnik

Summary, in English

We study nuclear effects in production of Drell-Yan pairs and direct photons in proton-nucleus collisions. For the first time, these effects are studied within the color dipole approach using the Green function formalism which naturally incorporates the color transparency and quantum coherence effects. The corresponding numerical results for the nuclear modification factor are compared with available data. Besides, we present a variety of predictions for the nuclear suppression as a function of transverse momentum pT, Feynman variable xF and invariant mass M of the lepton pair which can be verified by experiments at RHIC and LHC. We found that the nuclear suppression is caused predominantly by effects of quantum coherence (shadowing corrections) and by the effective energy loss induced by multiple initial state interactions. Whereas the former dominate at small Bjorken x2 in the target, the latter turns out to be significant at large x1 in the projectile beam and is universal at different energies and transverse momenta.

Department/s

  • Theoretical Particle Physics

Publishing year

2016-07-04

Language

English

Publication/Series

EPJ Web of Conferences

Volume

120

Document type

Conference paper

Publisher

EDP Sciences

Topic

  • Subatomic Physics

Conference name

45th International Symposium on Multiparticle Dynamics, ISMD 2015

Conference date

2015-10-04 - 2015-10-09

Conference place

Munich, Germany

Status

Published