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Measurement of the production of charm jets tagged with D0 mesons in pp collisions at √ s= 7 TeV

Acharya S.
•
Adamova D.
•
Adhya S. P.
altro
Zurlo N.
2019
  • journal article

Periodico
JOURNAL OF HIGH ENERGY PHYSICS
Abstract
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 6.23nb−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 < 30GeV/c and pseudorapidity T,jet |ηjet| < 0.5. The fraction of charged jets containing a D0-meson increases with pch from T,jet 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 (zch) is reported for two ranges of jet transverse momenta, || 5 < pch < 15GeV/c and 15 < pch < 30GeV/c in the intervals 0.2 < zch < 1.0 and T,jet T,jet || 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.
DOI
10.1007/JHEP08(2019)133
WOS
WOS:000484895500001
Archivio
http://hdl.handle.net/11368/2948930
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85071973004
https://link.springer.com/article/10.1007/JHEP08(2019)133
Diritti
open access
license:creative commons
license uri:http://creativecommons.org/licenses/by/4.0/
FVG url
https://arts.units.it/bitstream/11368/2948930/1/JHEP_08(2019)133_1-33.pdf
Soggetti
  • Hadron-Hadron scatter...

Web of Science© citazioni
19
Data di acquisizione
Mar 25, 2024
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