Roman Pasechnik
Senior lecturer
Nuclear effects in Drell-Yan production at the LHC
Author
Summary, in English
Using the color dipole formalism we study production of Drell-Yan (DY) pairs in proton-nucleus interactions in the kinematic region corresponding to LHC experiments. Lepton pairs produced in a hard scattering are not accompanied with any final state interactions leading to either energy loss or absorption. Consequently, dileptons may serve as more efficient and cleaner probes for the onset of nuclear effects than nclusive hadron production. We perform a systematic analysis of these effects in production of Drell-Yan pairs in pPb interaction at the LHC. We present predictions for the nuclear suppression as a function of the dilepton transverse momentum, rapidity and invariant mass which can be verified by the LHC measurements. We found that a strong nuclear suppression can be interpreted as an effective energy loss proportional to the initial energy universally induced by multiple initial state interactions. In addition, we study a contribution of coherent effects associated with the gluon shadowing affecting the observables predominantly at small and medium-high transverse momenta.
Department/s
- Theoretical Particle Physics - Has been reorganised
- Department of Astronomy and Theoretical Physics - Has been reorganised
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