Girth and groomed radius of jets recoiling against isolated photons in lead-lead and proton-proton collisions at √sNN=5.02 TeV
Yazarlar (1)
Prof. Dr. Hasan OĞUL Sinop Üniversitesi, Türkiye
Makale Türü Açık Erişim Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Physics Letters Section B Nuclear Elementary Particle and High Energy Physics (Q1)
Dergi ISSN 0370-2693 Dergi Bilgileri (2025)
Makale Dili İngilizce Basım Tarihi 02-2025
Cilt / Sayı / Sayfa 861 / 1 / 139088–0 DOI 10.1016/j.physletb.2024.139088
Makale Linki https://doi.org/10.1016/j.physletb.2024.139088
UAK Araştırma Alanları
Fen Bilimleri ve Matematik
Özet
This Letter presents the first measurements of the groomed jet radius R g and the jet girth g in events with an isolated photon recoiling against a jet in lead-lead (PbPb) and proton-proton (pp) collisions at the LHC at a nucleon-nucleon center-of-mass energy of 5.02 TeV. The observables R g and g provide a quantitative measure of how narrow or broad a jet is. The analysis uses PbPb and pp data samples with integrated luminosities of 1.7 nb− 1 and 301 pb− 1, respectively, collected with the CMS experiment in 2018 and 2017. Events are required to have a photon with transverse momentum p T γ> 100 GeV and at least one jet back-to-back in azimuth with respect to the photon and with transverse momentum p T jet such that p T jet/p T γ> 0.4. The measured R g and g distributions are unfolded to the particle level, which facilitates the comparison between the PbPb and pp results and with theoretical predictions. It is …
Anahtar Kelimeler
CMS | Gluons | Jet substructure | Jets | Lead-lead | Photon | Proton-proton