Estamos realizando la búsqueda. Por favor, espere...
1583
37
170
29187
4419
2601
347
390
Abstract: Results are presented of a search for a heavy Majorana neutrino Image 1 decaying into two same-flavor leptons ? (electrons or muons) and a quark-pair jet. A model is considered in which the Image 1 is an excited neutrino in a compositeness scenario. The analysis is performed using a sample of proton-proton collisions at recorded by the CMS experiment at the CERN LHC, corresponding to an integrated luminosity of 138 . The data are found to be in agreement with the standard model prediction. For the process in which the Image 1 is produced in association with a lepton, followed by the decay of the Image 1 to a same-flavor lepton and a quark pair, an upper limit at 95% confidence level on the product of the cross section and branching fraction is obtained as a function of the Image 1 mass Image 2 and the compositeness scale ?. For this model the data exclude the existence of Image 3 (Image 4) for Image 2 below 6.0 (6.1)?TeV, at the limit where Image 2 is equal to ?. For Image 5, values of ? less than 20 (23)?TeV are excluded. These results represent a considerable improvement in sensitivity, covering a larger parameter space than previous searches in Image 6 collisions at 13?TeV.
Fuente: Physics Letters B, 2023, 843, 137803
Editorial: Elsevier
Fecha de publicación: 01/08/2023
Nº de páginas: 25
Tipo de publicación: Artículo de Revista
DOI: 10.1016/j.physletb.2023.137803
ISSN: 0370-2693,1873-2445
Url de la publicación: https://doi.org/10.1016/j.physletb.2023.137803
Consultar en UCrea Leer publicación
TUMASYAN, A.
JAVIER ANDRES BROCHERO CIFUENTES
JOSE IBAN CABRILLO BARTOLOME
ALICIA CALDERON TAZON
JORGE DUARTE CAMPDERROS
MARCOS FERNANDEZ GARCIA
CELIA FERNANDEZ MADRAZO
ANDREA GARCIA ALONSO
GERVASIO GOMEZ GRAMUGLIO
CLARA LASAOSA GARCIA
CELSO MARTINEZ RIVERO
PABLO MARTINEZ RUIZ DEL ARBOL
FRANCISCO MATORRAS WEINIG
PABLO MATORRAS CUEVAS
JONATAN PIEDRA GOMEZ
CEDRIC GERALD PRIEELS
ALBERTO RUIZ JIMENO
LUCA SCODELLARO
IVAN VILA ALVAREZ
JESUS MANUEL VIZAN GARCIA
Volver