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10.1016-j.physletb.2016.01.028.pdf (1.5 MB)

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

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journal contribution
posted on 2023-06-09, 05:42 authored by Benedict AllbrookeBenedict Allbrooke, Lily AsquithLily Asquith, Alessandro CerriAlessandro Cerri, C A Chavez Barajas, Antonella De SantoAntonella De Santo, Fabrizio SalvatoreFabrizio Salvatore, I Santoyo Castillo, K Suruliz, Mark SuttonMark Sutton, Iacopo Vivarelli, The ATLAS Collaboration
A 6.8 nb-¹ sample of pp collision data collected under low-luminosity conditions at vs = 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 ??F, the size of the observable forward region of pseudorapidity which is devoid of hadronic activity, and in an estimator, ?˜, of the fractional momentum loss of the proton assuming single diffractive dissociation (pp ? p X). Model comparisons indicate a dominant non-diffractive contribution up to moderately large ?F and small ?˜, with a diffractive contribution which is significant at the highest ??F and the lowest ?˜. The rapidity-gap survival probability is estimated from comparisons of the data in this latter region with predictions based on diffractive parton distribution functions.

Funding

ATLAS; G0275; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/I006048/1

History

Publication status

  • Published

File Version

  • Published version

Journal

Physics Letters B

ISSN

0370-2693

Publisher

Elsevier

Volume

754

Page range

214-234

Department affiliated with

  • Physics and Astronomy Publications

Research groups affiliated with

  • Experimental Particle Physics Research Group Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2017-04-10

First Open Access (FOA) Date

2017-04-10

First Compliant Deposit (FCD) Date

2017-04-10

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