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| Verfasst von: | Acharya, Shreyasi [VerfasserIn]  |
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| | Angelov, Venelin [VerfasserIn] |
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| | Arslandok, Mesut [VerfasserIn] |
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| | Berdnikova, Anastasia [VerfasserIn] |
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| | Bergmann, Luisa [VerfasserIn] |
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| | Danisch, Meike [VerfasserIn] |
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| | Feuillard, Victor [VerfasserIn] |
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| | Glässel, Peter [VerfasserIn] |
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| | Kim, Jiyoung [VerfasserIn] |
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| | Kim, Minjung [VerfasserIn] |
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| | Köhler, Markus Konrad [VerfasserIn] |
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| | Kroesen, Martin [VerfasserIn] |
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| | López, Jorge [VerfasserIn] |
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| | Martin, Nicole Alice [VerfasserIn] |
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| | Nath, Abhishek [VerfasserIn] |
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| | Pachmayer, Yvonne C. [VerfasserIn] |
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| | Reygers, Klaus [VerfasserIn] |
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| | Schicker, Rainer [VerfasserIn] |
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| | Schmah, Alexander [VerfasserIn] |
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| | Skorodumovs, Georgijs [VerfasserIn] |
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| | Stachel, Johanna [VerfasserIn] |
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| | Stiefelmaier, Stephan [VerfasserIn] |
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| | Windelband, Bernd [VerfasserIn] |
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| | Yüncü, Alperen [VerfasserIn] |
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| Titel: | Measurements of the groomed and ungroomed jet angularities in pp collisions at √s = 5.02 TeV |
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| Körperschaft: | ALICE (Körperschaft) [VerfasserIn] |
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| Verf.angabe: | The ALICE collaboration |
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| E-Jahr: | 2022 |
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| Jahr: | May 10, 2022 |
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| Umfang: | 43 S. |
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| Fussnoten: | Im Titel steht der Buchstabe s unter dem Wurzelsymbol ; The ALICE collaboration: S. Acharya, V. Anguelov, M. Arslandok, A. Berdnikova, L. Bergmann, M.C. Danisch, V.J.G. Feuillard, P. Glässel, J. Kim, M. Kim, M.K. Köhler, M. Kroesen, J. Lopez, N. Martin, A. Nath, Y.C. Pachmayer, K. Reygers, R. Schicker, A. Schmach, G. Skorodumovs, J. Stachel, S. Stiefelmaier, B. Windelband, A. Yüncü [und viele weitere Personen] ; Gesehen am 22.07.2022 |
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| Titel Quelle: | Enthalten in: Journal of high energy physics |
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| Ort Quelle: | Berlin : Springer, 1997 |
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| Jahr Quelle: | 2022 |
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| Band/Heft Quelle: | (2022), 5, Artikel-ID 61, Seite 1-43 |
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| ISSN Quelle: | 1029-8479 |
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| Abstract: | 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 p ch T jet 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. |
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| DOI: | doi:10.1007/JHEP05(2022)061 |
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| URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Volltext: https://doi.org/10.1007/JHEP05(2022)061 |
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| | DOI: https://doi.org/10.1007/JHEP05(2022)061 |
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| Datenträger: | Online-Ressource |
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| Sprache: | eng |
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| Sach-SW: | Heavy Ion Experiments |
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| K10plus-PPN: | 1811312993 |
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| Verknüpfungen: | → Zeitschrift |
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Measurements of the groomed and ungroomed jet angularities in pp collisions at √s = 5.02 TeV / Acharya, Shreyasi [VerfasserIn]; May 10, 2022 (Online-Ressource)
