Modifications to the distribution of charged particles with respect to high transverse momentum (pT) jets passing through a quark-gluon plasma are explored using the CMS detector. Back-to-back dijets are analyzed in lead-lead and proton-proton collisions at sNN = 5.02 TeV via correlations of charged particles in bins of relative pseudorapidity and angular distance from the leading and subleading jet axes. In comparing the lead-lead and proton-proton collision results, modifications to the charged-particle relative distance distribution and to the momentum distributions around the jet axis are found to depend on the dijet momentum balance xj , which is the ratio between the subleading and leading jet pT. For events with xj ≈ 1, these modifications are observed for both the leading and subleading jets. However, while subleading jets show significant modifications for events with a larger dijet momentum imbalance, much smaller modifications are found for the leading jets in these events. [Figure not available: see fulltext.]

Sirunyan, A., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., Ero, J., et al. (2021). In-medium modification of dijets in PbPb collisions at √sNN = 5.02 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2021(5) [10.1007/JHEP05(2021)116].

In-medium modification of dijets in PbPb collisions at √sNN = 5.02 TeV

Benaglia A.;Beschi A.;Brivio F.;Cetorelli F.;Ciriolo V.;De Guio F.;Dinardo M. E.;Ghezzi A.;Govoni P.;Guzzi L.;Malberti M.;Massironi A.;Monti F.;Paganoni M.;Ragazzi S.;Tabarelli de Fatis T.;Valsecchi D.;Zuolo D.;Ortona G.;Gerosa R.;Lucchini M. T.;
2021

Abstract

Modifications to the distribution of charged particles with respect to high transverse momentum (pT) jets passing through a quark-gluon plasma are explored using the CMS detector. Back-to-back dijets are analyzed in lead-lead and proton-proton collisions at sNN = 5.02 TeV via correlations of charged particles in bins of relative pseudorapidity and angular distance from the leading and subleading jet axes. In comparing the lead-lead and proton-proton collision results, modifications to the charged-particle relative distance distribution and to the momentum distributions around the jet axis are found to depend on the dijet momentum balance xj , which is the ratio between the subleading and leading jet pT. For events with xj ≈ 1, these modifications are observed for both the leading and subleading jets. However, while subleading jets show significant modifications for events with a larger dijet momentum imbalance, much smaller modifications are found for the leading jets in these events. [Figure not available: see fulltext.]
Articolo in rivista - Articolo scientifico
Hadron-Hadron scattering (experiments); Jet physics; Quark gluon plasma;
English
2021
2021
5
116
none
Sirunyan, A., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., Ero, J., et al. (2021). In-medium modification of dijets in PbPb collisions at √sNN = 5.02 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2021(5) [10.1007/JHEP05(2021)116].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/472059
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