A study of excited Λ0b 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 Λ0b states: Λ0b(5912)0, Λ0b(5920)0, Λ0b(6146)0, and Λ0b(6152)0 in the Λ0bπ+π− mass spectrum is confirmed, and their masses are measured. The Λ0bπ+π− mass distribution exhibits abroad excess of events in the region of 6040–6100 MeV,whose origin can not be discerned with the present data.
(2020). Study of excited Λb0 states decaying to Λb0π+π− in proton-proton collisions at √s=13TeV [journal article - articolo]. In PHYSICS LETTERS. SECTION B. Retrieved from http://hdl.handle.net/10446/156042
Study of excited Λb0 states decaying to Λb0π+π− in proton-proton collisions at √s=13TeV
Re, V.;Vai, I.;
2020-01-01
Abstract
A study of excited Λ0b 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 Λ0b states: Λ0b(5912)0, Λ0b(5920)0, Λ0b(6146)0, and Λ0b(6152)0 in the Λ0bπ+π− mass spectrum is confirmed, and their masses are measured. The Λ0bπ+π− mass distribution exhibits abroad excess of events in the region of 6040–6100 MeV,whose origin can not be discerned with the present data.File | Dimensione del file | Formato | |
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