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Measurements of the production of P-wave charmonium states through radiative decays at the ATLAS experiment

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    SYSNO ASEP0522707
    Document TypeC - Proceedings Paper (int. conf.)
    R&D Document TypeConference Paper
    TitleMeasurements of the production of P-wave charmonium states through radiative decays at the ATLAS experiment
    Author(s) Marčišovský, Michal (FZU-D) RID, ORCID
    Number of authors1
    Article number00082
    Source TitleEPJ Web of Conferences, 71 - 2nd International Conference on New Frontiers in Physics. - Les Ulis : E D P Sciences, 2014 / Bravina L. ; Foka Y. ; Kabana S. - ISSN 2100-014X
    Pagess. 1-8
    Number of pages8 s.
    Publication formOnline - E
    ActionInternational Conference on New Frontiers in Physics /2./
    Event date28.08.2013 - 05.09.2013
    VEvent locationKolymbari
    CountryGR - Greece
    Event typeWRD
    Languageeng - English
    CountryFR - France
    KeywordsATLAS ; CERN LHC Coll ; B+:branching ratio: measured
    Subject RIVBF - Elementary Particles and High Energy Physics
    OBOR OECDParticles and field physics
    R&D ProjectsLG13009 GA MŠk - Ministry of Education, Youth and Sports (MEYS)
    Institutional supportFZU-D - RVO:68378271
    UT WOS000342375000082
    EID SCOPUS84901467365
    DOI10.1051/epjconf/20147100082
    AnnotationThe production cross sections of the chi_c1 and chi_c2 charmonium states are measured in pp collisions at s**(1/2) = 7 TeV using 4.5 fb^-1 of integrated luminosity recorded by the ATLAS detector at the LHC. The chi_c states are reconstructed via the radiative decay chi_c -> J/psi(mu^+mu^-)gamma, where the photons are reconstructed using gamma -> e^+ e^- conversion in the detector material. Differential production cross sections for prompt and non-prompt chi_c1,2 are presented, as well as the fraction of inclusive J/psi produced by feed-down from the chi_c states. The results are compared with a range of theoretical predictions. The branching fraction of ℬ (B^+ -> chi_c1K^+) is measured using the same dataset and chi_c event selection.
    WorkplaceInstitute of Physics
    ContactKristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
    Year of Publishing2020
Number of the records: 1