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Title
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Study of dijet events with a large rapidity gap between the two leading jets in pp collisions at root s=7 TeV
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Author
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Institution/Organisation
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CMS Collaboration
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Abstract
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| Events with no charged particles produced between the two leading jets are studied in proton-proton collisions at root s = 7 TeV. The jets were required to have transverse momentum p(T)(jet) > 40 GeV and pseudorapidity 1.5 < vertical bar eta(jet)vertical bar < 4.7, and to have values of eta(jet) with opposite signs. The data used for this study were collected with the CMSdetector during low-luminosity running at the LHC, and correspond to an integrated luminosity of 8 pb(-1). Events with no charged particles with p(T) > 0.2GeV in the interval -1 < eta < 1 between the jets are observed in excess of calculations that assume no color-singlet exchange. The fraction of events with such a rapidity gap, amounting to 0.5-1% of the selected dijet sample, is measured as a function of the pT of the second-leading jet and of the rapidity separation between the jets. The data are compared to previous measurements at the Tevatron, and to perturbative quantum chromodynamics calculations based on the Balitsky-Fadin-Kuraev-Lipatov evolution equations, including different models of the non-perturbative gap survival probability. |
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Language
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English
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Source (journal)
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European physical journal : C : particles and fields. - Berlin
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Publication
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Berlin
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2018
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ISSN
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1434-6044
1434-6052
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DOI
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10.1140/EPJC/S10052-018-5691-6
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Volume/pages
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78
:3
(2018)
, 27 p.
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Article Reference
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242
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ISI
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000428179700004
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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