Posted at the Zurich Open Repository and Archive, University of Zurich ZORA URL: https://www. zora. uzh. ch/handle/20.500. 14742/149387
Yazarlar (22)
CMS Collaboration
Maria Florencia Canelli
Benjamin Kilminster
Thea K Aarrestad
Danyyl Brzhechko
Lea Caminada
Annapaoloa De Cosa
Riccardo Del Burgo
Silvio Donato
Camilla Galloni
Tomas Hreus
Stefanos Leontsinis
Vinicius Massami Mikuni
Izaak Neutelings
Giorgia Rauco
Peter Robmann
Prof. Dr. Hasan OĞUL Sinop Üniversitesi, Türkiye
Korbinian Schweiger
Claudia Seitz
Yuta Takahashi
Sebastien Wertz
Alberto Zucchetta Sinop Üniversitesi
| Makale Türü |
Özgün Makale
(SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
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| Dergi Adı | Phys Rev Lett (Q1) | ||
| Makale Dili | – | Basım Tarihi | 01-2018 |
| Cilt / Sayı / Sayfa | 121 / 0 / 92002–0 | DOI | – |
| Makale Linki | https://www.zora.uzh.ch/server/api/core/bitstreams/50ba72b2-782e-4207-b227-1c645d385283/content | ||
| UAK Araştırma Alanları |
Nükleer Fizik
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| Özet |
| The χb1 (3P) and χb2 (3P) states are observed through their Υ (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 Υ (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 Υ (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. |
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