Exploring small-angle emissions in charm quark jets in proton-proton collisions at s=5.02 TeV


Chekhovsky V., Hayrapetyan A., Makarenko V., Tumasyan A., Adam W., Andrejkovic J., ...Daha Fazla

Journal of High Energy Physics, cilt.2026, sa.5, 2026 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 2026 Sayı: 5
  • Basım Tarihi: 2026
  • Doi Numarası: 10.1007/jhep05(2026)176
  • Dergi Adı: Journal of High Energy Physics
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, INSPEC, MathSciNet, zbMATH, Directory of Open Access Journals, Academic Search Ultimate (EBSCO), Technology Collection (ProQuest)
  • Anahtar Kelimeler: Charm Physics, Hadron-Hadron Scattering, Jets
  • Çukurova Üniversitesi Adresli: Evet

Özet

A measurement of the angular structure of inclusive jets and those containing a prompt D0 meson in proton-proton collisions at the LHC at a center-of-mass energy of 5.02 TeV is presented. The data corresponding to an integrated luminosity of 301 pb−1 were collected by the CMS experiment in 2017. Two jet grooming algorithms, late-kT and soft drop, are used to study the intrajet radiation pattern using iterative Cambridge-Aachen declustering. The splitting-angle distributions of jets with transverse momentum (pT) of around 100 GeV, obtained with these two algorithms, show that there is a shift of the distribution for jets containing a prompt D0 meson with respect to inclusive jets. The suppression of emissions at small angles observed in the late-kT grooming approach is consistent with the dead-cone effect, whereas the similar suppression for splittings selected with the soft-drop algorithm appears to be induced by gluon splitting to charm quark-antiquark pairs at large angles. The measured distributions are corrected to the particle level and can be used to constrain model predictions for the substructure of high-pT charm quark jets.