Measurement of the production of charm jets tagged with D0 mesons in pp collisions at √s = 7 TeV
Acharya, Shreyasi; Adamová, Dagmar; Adhya, Souvik Priyam; Adler, Alexander; Adolfsson, Jonatan; Aggarwal, Madan M.; Aglieri Rinella, Gianluca; Agnello, Michelangelo; Agrawal, Neelima; Ahammed, Zubayer; Alme, Johan; Altenkaemper, Lucas; Djuvsland, Øystein; Ersdal, Magnus Rentsch; Fionda, Fiorella Maria Celeste; Grøttvik, Ola Slettevoll; Lofnes, Ingrid Mckibben; Nystrand, Joakim; Rehman, Attiq ur; Røhrich, Dieter; Tambave, Ganesh Jagannath; Ullaland, Kjetil; Wagner, Boris; Yang, Shiming; Yuan, Shiming; Zhou, Zhuo; Arsene, Ionut Cristian; Bätzing, Paul Christoph; Dordic, Olja; Lardeux, Antoine Xavier; Lindal, Svein; Mahmood, Sohail Musa; Malik, Qasim Waheed; Richter, Matthias; Røed, Ketil; Skaali, Toralf Bernhard; Tveter, Trine Spedstad; Wikne, Jon Christopher; Zhao, Chengxin; Helstrup, Håvard; Hetland, Kristin Fanebust; Kileng, Bjarte; Nesbø, Simon Voigt; Storetvedt, Maksim Melnik; Langøy, Rune; Lien, Jørgen André; Ahmad, Shafiq F.; Ahn, Sang Un; Aiola, Salvatore; Akindinov, Alexander; ALICE, Collaboration
Journal article, Peer reviewed
MetadataShow full item record
Original versionThe ALICE collaboration, Acharya, S., Adamová, D., Adhya, S. P., Adler, A., Adolfsson, J., … Zurlo, N. (2019). Measurement of the production of charm jets tagged with D0 mesons in pp collisions at √s = 7 TeV. Journal of High Energy Physics, 2019(8), 133. 10.1007/JHEP08(2019)133
The production of charm jets in proton-proton collisions at a center-of-mass energy of √ s = 7 TeV was measured with the ALICE detector at the CERN Large Hadron Collider. The measurement is based on a data sample corresponding to a total integrated luminosity of 6.23 nb−1 , collected using a minimum-bias trigger. Charm jets are identified by the presence of a D0 meson among their constituents. The D0 mesons are reconstructed from their hadronic decay D0 →K−π +. The D0 -meson tagged jets are reconstructed using tracks of charged particles (track-based jets) with the anti-kT algorithm in the jet transverse momentum range 5 < pch T,jet < 30 GeV/c and pseudorapidity |ηjet| < 0.5. The fraction of charged jets containing a D0 -meson increases with p ch T,jet from 0.042 ± 0.004 (stat) ± 0.006 (syst) to 0.080 ± 0.009 (stat) ± 0.008 (syst). The distribution of D0 -meson tagged jets as a function of the jet momentum fraction carried by the D0 meson in the direction of the jet axis (z ch || ) is reported for two ranges of jet transverse momenta, 5 < pch T,jet < 15 GeV/c and 15 < pch T,jet < 30 GeV/c in the intervals 0.2 < zch || < 1.0 and 0.4 < zch || < 1.0, respectively. The data are compared with results from Monte Carlo event generators (PYTHIA 6, PYTHIA 8 and Herwig 7) and with a Next-to-Leading-Order perturbative Quantum Chromodynamics calculation, obtained with the POWHEG method and interfaced with PYTHIA 6 for the generation of the parton shower, fragmentation, hadronisation and underlying event.