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Measurements of the groomed and ungroomed jet angularities in pp collisions at √s = 5.02 TeV

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dc.contributor.authorAcharya, S.
dc.contributor.authorAdamova, D.
dc.contributor.authorAdler, A.
dc.contributor.authorAglieri, Rinella, G.
dc.contributor.authorBelyaev, V.
dc.contributor.authorBogdanov, A.
dc.contributor.authorBolozdynya, A.
dc.contributor.authorGrigoriev, V.
dc.contributor.authorKaplin, V.
dc.contributor.authorKondratyeva, N.
dc.contributor.authorLoginov, V.
dc.contributor.authorOkorokov, V. A.
dc.contributor.authorSamsonov, V.
dc.contributor.authorSelyuzhenkov, I.
dc.contributor.authorБеляев, Владимир Никитич
dc.contributor.authorБогданов, Алексей Александрович
dc.contributor.authorБолоздыня, Александр Иванович
dc.contributor.authorГригорьев, Владислав Анатольевич
dc.contributor.authorКондратьева, Наталья Викторовна
dc.contributor.authorЛогинов, Виталий Александрович
dc.contributor.authorОкороков, Виталий Алексеевич
dc.date.accessioned2024-12-25T15:19:09Z
dc.date.available2024-12-25T15:19:09Z
dc.date.issued2022
dc.description.abstract© 2022, The Author(s).The jet angularities are a class of jet substructure observables which characterize the angular and momentum distribution of particles within jets. These observables are sensitive to momentum scales ranging from perturbative hard scatterings to nonperturbative fragmentation into final-state hadrons. We report measurements of several groomed and ungroomed jet angularities in pp collisions at s = 5.02 TeV with the ALICE detector. Jets are reconstructed using charged particle tracks at midrapidity (|η| < 0.9). The anti-kT algorithm is used with jet resolution parameters R = 0.2 and R = 0.4 for several transverse momentum pTchjet intervals in the 20–100 GeV/c range. Using the jet grooming algorithm Soft Drop, the sensitivity to softer, wide-angle processes, as well as the underlying event, can be reduced in a way which is well-controlled in theoretical calculations. We report the ungroomed jet angularities, λα, and groomed jet angularities, λα,g, to investigate the interplay between perturbative and nonperturbative effects at low jet momenta. Various angular exponent parameters α = 1, 1.5, 2, and 3 are used to systematically vary the sensitivity of the observable to collinear and soft radiation. Results are compared to analytical predictions at next-to-leading-logarithmic accuracy, which provide a generally good description of the data in the perturbative regime but exhibit discrepancies in the nonperturbative regime. Moreover, these measurements serve as a baseline for future ones in heavy-ion collisions by providing new insight into the interplay between perturbative and nonperturbative effects in the angular and momentum substructure of jets. They supply crucial guidance on the selection of jet resolution parameter, jet transverse momentum, and angular scaling variable for jet quenching studies. [Figure not available: see fulltext.]
dc.identifier.citationMeasurements of the groomed and ungroomed jet angularities in pp collisions at √s = 5.02 TeV / Acharya, S. [et al.] // Journal of High Energy Physics. - 2022. - 2022. - № 5. - 10.1007/JHEP05(2022)061
dc.identifier.doi10.1007/JHEP05(2022)061
dc.identifier.urihttps://www.doi.org/10.1007/JHEP05(2022)061
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85131875839&origin=resultslist
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/28076
dc.relation.ispartofJournal of High Energy Physics
dc.titleMeasurements of the groomed and ungroomed jet angularities in pp collisions at √s = 5.02 TeV
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue5
oaire.citation.volume2022
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