The CMS Collaboration;
(2020)
Study of excited Λ0b states decaying to Λ0bπ⁺π⁻ in proton-proton collisions at √s = 13 TeV.
Physics Letters B
, 803
, Article 135345. 10.1016/j.physletb.2020.135345.
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Abstract
A study of excited Λ0 b 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 140 fb−1. The existence of four excited Λ0 b states: Λ0 b(5912)0, Λ0 b(5920)0, Λ0 b(6146)0, and Λ0 b(6152)0 in the Λ0 bπ+π− mass spectrum is confirmed, and their masses are measured. The Λ0 bπ+π− mass distribution exhibits a broad excess of events in the region of 6040–6100MeV, whose origin cannot be discerned with the present data.
| Type: | Article |
|---|---|
| Title: | Study of excited Λ0b states decaying to Λ0bπ⁺π⁻ in proton-proton collisions at √s = 13 TeV |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.physletb.2020.135345 |
| Publisher version: | https://doi.org/10.1016/j.physletb.2020.135345 |
| Language: | English |
| Additional information: | Copyright © 2020 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3. |
| Keywords: | CMS, Physics, Beauty baryon, Heavy baryon, Heavy flavor, Flavor spectroscopy, Experimental results |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10097475 |
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