Study of dijet events with a large rapidity gap between the two leading jets in pp collisions at √s=7TeV
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 da...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English English |
| Published: |
Springer New York LLC
2018
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/70143/ http://irep.iium.edu.my/70143/ http://irep.iium.edu.my/70143/ http://irep.iium.edu.my/70143/1/70143_Study%20of%20dijet%20events%20with%20a%20large%20rapidity%20gap.pdf http://irep.iium.edu.my/70143/2/70143_Study%20of%20dijet%20events%20with%20a%20large%20rapidity%20gap_SCOPUS.pdf http://irep.iium.edu.my/70143/3/70143_Study%20of%20dijet%20events%20with%20a%20large%20rapidity%20gap_WOS.pdf |
| Summary: | 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 |
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