Search for long-lived particles decaying to leptons with large impact parameter in proton–proton collisions at √s = 13 TeV

• Autor(a) principal: Tumasyan, Armen
• Data de Publicação: 2022
• Outros Autores: Silveira, Gustavo Gil da, Bernardes, César Augusto, CMS Collaboration
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UFRGS
• Texto Completo: http://hdl.handle.net/10183/237219
• topic: Aceleradores de partículas; Colisões proton-proton; Leptons

A search for new long-lived particles decaying to leptons using proton–proton collision data produced by the CERN LHC at √s = 13 TeV is presented. Events are selected with two leptons (an electron and a muon, two electrons, or two muons) that both have transverse impact parameter val ues between 0.01 and 10 cm and are not required to form a common vertex. Data used for the analysis were collected with the CMS detector in 2016, 2017, and 2018, and corre spond to an integrated luminosity of 118 (113) fb−1 in the ee channel (eμ and μμ channels). The search is designed to be sensitive to a wide range of models with displaced eμ, ee, and μμ final states. The results constrain several well-motivated models involving new long-lived particles that decay to dis placed leptons. For some areas of the available phase space, these are the most stringent constraints to date.