Study of dijet events with a large rapidity gap between the two leading jets in pp collisions at √s=7TeV

Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Asilar, Ece and Bergauer, Thomas and Md. Ali, Mohd. Adli (2018) Study of dijet events with a large rapidity gap between the two leading jets in pp collisions at √s=7TeV. European Physical Journal C, 78 (3). pp. 1-27. ISSN 1434-6044 E-ISSN 1434-6052

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Abstract

Events with no charged particles produced between the two leading jets are studied in proton-proton collisions at √s = 7 TeV. The jets were required to have transverse momentum p jet T > 40 GeV and pseudorapidity 1.5 < |ηjet| < 4.7, and to have values of ηjet with opposite signs. The data used for this study were collected with the CMS detector during low-luminosity running at the LHC, and correspond to an integrated luminosity of 8 pb−1. Events with no charged particles with pT > 0.2 GeV in the interval −1 <η< 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 nonperturbative gap survival probability

Item Type:	Article (Journal)
Additional Information:	7861/70143
Uncontrolled Keywords:	Dijet events; Two leading jets in pp collisions; √s=7TeV
Subjects:	Q Science > Q Science (General) Q Science > QC Physics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science Kulliyyah of Science > Department of Physics
Depositing User:	Dr Mohd Adli MD Ali
Date Deposited:	28 Jan 2019 16:50
Last Modified:	15 Jul 2019 09:37
URI:	http://irep.iium.edu.my/id/eprint/70143

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