par Sirunyan, A.M.;Beghin, Diego ;Bilin, Bugra ;Clerbaux, Barbara ;De Lentdecker, Gilles ;Delannoy, Hugo ;Dorney, Brian ;Favart, Laurent ;Grebenyuk, Anastasia ;Kalsi, Amandeep Kaur ;Moureaux, Louis ;Popov, Andrey ;Postiau, Nicolas ;Starling, Elizabeth Rose ;Thomas, Laurent ;Vander Velde, Catherine ;Vanlaer, Pascal ;Vannerom, David ;Malara, Andrea ; [et al.]
Référence Physics letters. Section B, 803, 135345
Publication Publié, 2020-04-20
Référence Physics letters. Section B, 803, 135345
Publication Publié, 2020-04-20
Article révisé par les pairs
Résumé : | A study of excited 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. The existence of four excited states: , , , and in the mass spectrum is confirmed, and their masses are measured. The mass distribution exhibits a broad excess of events in the region of 6040–6100 MeV, whose origin cannot be discerned with the present data. |