Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/7740
Title: Observation of the chi(b1)(3P) and chi(b2)(3P) and measurement of their masses
Authors: CMS Collaboration
Karapınar, Güler
Keywords: Dynamic mechanical analysis
Tellurium compounds
Mass resolution
Decay channels
Low energy photons
Issue Date: Aug-2018
Publisher: American Physical Society
Source: Sirunyan, A.M., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., Brandstetter, J. ...CMS Collaboration (2018). Observation of the χb1 (3P) and χb2 (3P) and measurement of their masses. Physical Review Letters, 121(9). doi:10.1103/PhysRevLett.121.092002
Abstract: The χb1(3P) and χb2(3P) states are observed through their (3S)γ decays, using an event sample of proton-proton collisions collected by the CMS experiment at the CERN LHC. The data were collected at a center-of-mass energy of 13 TeV and correspond to an integrated luminosity of 80.0 fb-1. The (3S) mesons are identified through their dimuon decay channel, while the low-energy photons are detected after converting to e+e- pairs in the silicon tracker, leading to a χb(3P) mass resolution of 2.2 MeV. This is the first time that the J=1 and 2 states are well resolved and their masses individually measured: 10513.42±0.41(stat)±0.18(syst) MeV and 10524.02±0.57(stat)±0.18(syst) MeV; they are determined with respect to the world-average value of the ~(3S) mass, which has an uncertainty of 0.5 MeV. The mass splitting is measured to be 10.60±0.64(stat)±0.17(syst) MeV.
URI: https://doi.org/10.1103/PhysRevLett.121.092002
https://hdl.handle.net/11147/7740
ISSN: 0031-9007
0031-9007
1079-7114
Appears in Collections:Mathematics / Matematik
PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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