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https://hdl.handle.net/11147/8449
Title: | Study of Excited Λb 0 States Decaying To Λb 0π+π− in Proton-Proton Collisions at S=13tev | Authors: | Sirunyan, A.M. Tumasyan, A. Adam, W. Ambrogi, F. Bergauer, T. Dragicevic, M. Ryutin, R. |
Keywords: | Beauty Baryon Cms Experimental Results Flavor Spectroscopy Heavy Baryon Heavy Flavor Physics |
Publisher: | Elsevier B.V. | Abstract: | A study of excited Λb 0 baryons is reported, based on a data sample collected in 2016–2018 with the CMS detector at the LHC in proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of up to 140fb−1. The existence of four excited Λb 0 states: Λb 0(5912)0, Λb 0(5920)0, Λb 0(6146)0, and Λb 0(6152)0 in the Λb 0π+π− mass spectrum is confirmed, and their masses are measured. The Λb 0π+π− mass distribution exhibits a broad excess of events in the region of 6040–6100 MeV, whose origin cannot be discerned with the present data. © 2020 The Author(s) | URI: | https://doi.org/10.1016/j.physletb.2020.135345 | ISSN: | 0370-2693 |
Appears in Collections: | Rectorate / Rektörlük Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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