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English

Dijet production in √s = 7 TeV pp collisions with large rapidity gaps at the ATLAS experiment

ContributorsATLAS Collaboration
Published inPhysics letters. B, vol. 754, p. 214-234
Collection
  • Open Access - SCOAP3
Publication date2016
Abstract

A 6.8 nb −1 sample of pp collision data collected under low-luminosity conditions at s=7TeV by the ATLAS detector at the Large Hadron Collider is used to study diffractive dijet production. Events containing at least two jets with pT>20GeV 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 ΔηF 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.

Citation (ISO format)
ATLAS Collaboration. Dijet production in √s = 7 TeV pp collisions with large rapidity gaps at the ATLAS experiment. In: Physics letters. B, 2016, vol. 754, p. 214–234. doi: 10.1016/j.physletb.2016.01.028
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Article (Published version)
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ISSN of the journal0370-2693
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Creation02/01/2016 4:09:03 PM
First validation02/01/2016 4:09:03 PM
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