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

Mullier, Geoffrey; Haug, Sigve; Weber, Michael; Meloni, Federico; Cervelli, Alberto; Beck, Hans Peter; Stucci, Stefania; Ereditato, Antonio (2016). Dijet production in √s= 7 TeV pp collisions with large rapidity gaps at the ATLAS experiment. Physics letters. B, 754, pp. 214-234. Elsevier 10.1016/j.physletb.2016.01.028

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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.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP)

UniBE Contributor:

Haug, Sigve; Weber, Michael and Beck, Hans Peter

Subjects:

500 Science > 530 Physics
500 Science > 510 Mathematics

ISSN:

0370-2693

Publisher:

Elsevier

Language:

English

Submitter:

Annette Krebs-Wegenast

Date Deposited:

15 Aug 2017 07:31

Last Modified:

15 Aug 2017 07:31

Publisher DOI:

10.1016/j.physletb.2016.01.028

Additional Information:

Kollaboration - Es sind nur die Berner Autoren namentlich erwähnt.

BORIS DOI:

10.7892/boris.100001

URI:

https://boris.unibe.ch/id/eprint/100001

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