Hard color-singlet exchange in dijet events in proton-proton collisions at s =13 TeV
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F21%3A00353166" target="_blank" >RIV/68407700:21220/21:00353166 - isvavai.cz</a>
Alternative codes found
RIV/49777513:23220/21:43965087
Result on the web
<a href="https://doi.org/10.1103/PhysRevD.104.032009" target="_blank" >https://doi.org/10.1103/PhysRevD.104.032009</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.104.032009" target="_blank" >10.1103/PhysRevD.104.032009</a>
Alternative languages
Result language
angličtina
Original language name
Hard color-singlet exchange in dijet events in proton-proton collisions at s =13 TeV
Original language description
Events where the two leading jets are separated by a pseudorapidity interval devoid of particle activity, known as jet-gap-jet events, are studied in proton-proton collisions at root s = 13 TeV. The signature is expected from hard color-singlet exchange. Each of the highest transverse momentum (p_T) jets must have p^(jet)_T > 40 GeV and pseudorapidity 1.4 < |η^(jet)| < 4.7, with η^(jet1)η^(jet2) < 0, where jet1 and jet2 are the leading and subleading jets in p_T, respectively. The analysis is based on data collected by the CMS and TOTEM experiments during a low luminosity, high-β* run at the CERN LHC in 2015, with an integrated luminosity of 0.66 pb⁻¹. Events with a low number of charged particles with p_T > 0.2 GeV in the interval |η| < 1 between the jets are observed in excess of calculations that assume only color-exchange. The fraction of events produced via color-singlet exchange, f_(CSE), is measured as a function of p^(jet2)_T, the pseudorapidity difference between the two leading jets, and the azimuthal angular separation between the two leading jets. The fraction f_(CSE) has values of 0.4–1.0%. The results are compared with previous measurements and with predictions from perturbative quantum chromodynamics. In addition, the first study of jet-gap-jet events detected in association with an intact proton using a subsample of events with an integrated luminosity of 0.40 pb⁻¹ is presented. The intact protons are detected with the Roman pot detectors of the TOTEM experiment. The f_(CSE) in this sample is 2.91±0.70(stat)^(+1.08)_(-1.01)(syst) times larger than that for inclusive dijet production in dijets with similar kinematics.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10303 - Particles and field physics
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review D
ISSN
2470-0010
e-ISSN
2470-0029
Volume of the periodical
104
Issue of the periodical within the volume
3
Country of publishing house
US - UNITED STATES
Number of pages
35
Pages from-to
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UT code for WoS article
000689736000001
EID of the result in the Scopus database
2-s2.0-85114162630