# EPS HEP 2015

22-29 July 2015
Europe/Vienna timezone

## Measurement of exclusive gamma+gamma -> ll production in proton-proton collisions with the ATLAS detector

Jul 23, 2015, 12:06 PM
18m
HS31

### HS31

talk Top and Electroweak Physics

### Speaker

Mariusz Przybycien (AGH University of Science and Technology (PL))

### Description

The measurement of the exclusive gamma+gamma -> ll production cross-section in proton-proton collisions at a centre-of-mass energy of 7 TeV has been carried out by the ATLAS experiment at the LHC, based on an integrated luminosity of 4.6 fb-1. The ratios to the pure QED cross-section predictions are measured in the electron and muon channels and are found to be consistent  with the previous measurements at the LHC. When proton absorptive  effects due to finite proton size are taken into account in the theory calculation  the measured cross-sections are found to be consistent with  the prediction.

Submitted on behalf of the ATLAS Standard Model Physics Group by the ATLAS Speakers Committee representative Alex Read (a.l.read@fys.uio.no). Alex is not the speaker! A speaker will be selected by the Speakers Committee when the abstract is accepted.

### Primary author

Alexander Lincoln Read (University of Oslo (NO))