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Dijet production in root s=7 TeV pp collisions with large rapidity gaps at the ATLAS experiment
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0002-8913-0981
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Number of Authors: 2868
2016 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 754, 214-234 p.Article in journal (Refereed) PublishedText
Abstract [en]

A 6.8 nb(-1) sample of pp collision data collected under low-luminosity conditions at root 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 p(T) > 20 GeV are selected and analysed in terms of variables which discriminate between diffractive and non-diffractive processes. Cross sections are measured differentially in Delta eta(F), the size of the observable forward region of pseudorapidity which is devoid of hadronic activity, and in an estimator, (xi) over tilde, 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 Delta eta(F) and small (xi) over tilde, with a diffractive contribution which is significant at the highest Delta eta(F) and the lowest (xi) over tilde. The rapidity-gap survival probability is estimated from comparisons of the data in this latter region with predictions based on diffractive parton distribution functions

Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 754, 214-234 p.
National Category
Subatomic Physics
Identifiers
URN: urn:nbn:se:kth:diva-184904DOI: 10.1016/j.physletb.2016.01.028ISI: 000369601000034ScopusID: 2-s2.0-84955437809OAI: oai:DiVA.org:kth-184904DiVA: diva2:917602
Funder
Swedish Research CouncilKnut and Alice Wallenberg Foundation
Note

QC 20160407

Available from: 2016-04-07 Created: 2016-04-07 Last updated: 2016-04-07Bibliographically approved

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Lund-Jensen, BengtSidebo, EdvinStrandberg, Jonas
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