Dijet production in √s= 7 TeV pp collisions with large rapidity gaps at the ATLAS experiment
Publisher DOI
Abstract
A 6.8 nb⁻¹ sample of pp collision data collected under low-luminosity conditions at √s=7 TeV by the ATLAS detector at the Large Hadron Collider is used to study diffractive dijet production. Events containing at least two jets with pT >20 GeV are selected and analysed in terms of variables which discriminate between diffractive and non-diffractive processes. Cross sections are measured differentially in ΔηF, the size of the observable forward region of pseudorapidity which is devoid of hadronic activity, and in an estimator, ξ , of the fractional momentum loss of the proton assuming single diffractive dissociation (pp→pX ). Model comparisons indicate a dominant non-diffractive contribution up to moderately large Δη F and small ξ, with a diffractive contribution which is significant at the highest ΔηF and the lowest ξ. The rapidity-gap survival probability is estimated from comparisons of the data in this latter region with predictions based on diffractive parton distribution functions.
Date Issued
2016
Publication Type
Article
Subject(s)
Language(s)
en
Author(s)
Mullier, Geoffrey | |
Meloni, Federico | |
Cervelli, Alberto | |
Stucci, Stefania | |
Ereditato, Antonio |
Additional Credits
Journal
Physics letters. B
Publisher
Elsevier
ISSN
0370-2693
Access(Rights)
open.access