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Measurement of the production of charm jets tagged with D0 mesons in pp collisions at sqrt(s)=7 TeVстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 27 февраля 2020 г.
- Авторы: Malinina L., ALICE C.
- Журнал: Journal of High Energy Physics
- Том: 1908
- Год издания: 2019
- Издательство: IOP Publishing
- Местоположение издательства: [Bristol, UK], England
- Первая страница: 133
- DOI: 10.1007/JHEP08(2019)133
- Аннотация: 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<𝑝chT,jet < 30 GeV/c and pseudorapidity |η𝑗𝑒𝑡| < 0.5. The fraction of charged jets containing a D0-meson increases with 𝑝chT,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 (𝑧ch∥) is reported for two ranges of jet transverse momenta, 5<𝑝chT,jet < 15 GeV/c and 15<𝑝chT,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.
- Добавил в систему: Малинина Людмила Владимировна