Search for pairs of scalar leptoquarks decaying into quarks and electrons or muons in s√s = 13 TeV pp collisions with the ATLAS detector

A search for new-physics resonances decaying into a lepton and a jet performed by the ATLAS experiment is presented. Scalar leptoquarks pair-produced in pp collisions at s√ = 13 TeV at the Large Hadron Collider are considered using an integrated luminosity of 139 fb−1, corresponding to the full Run...

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Detalles Bibliográficos
Autores: Alonso, Francisco, Alconada Verzini, María Josefina, Arduh, Francisco Anuar, Dova, Maria Teresa, Hoya, Joaquín, Monticelli, Fernando Gabriel, Orellana, Gonzalo Enrique, Wahlberg, Hernan Pablo, Abed Abud, A., Ahmad, A., Alderweireldt, S., Aleksa, M., Allaire, C., Aranzabal Barrio, N., Bielski, R., Bortfeldt, J., Boyd, J., Butti, P., Buttinger, W., Camincher, C., Campana, S., Ellis, N., Elsing, M., Farthouat, P., Fassnacht, P., Heinrich, L., Iengo, P., Morley, A. K., Mornacchi, G., Moschovakos, P.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2020
País:Argentina
Institución:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/149748
Acceso en línea:http://hdl.handle.net/11336/149748
Access Level:acceso abierto
Palabra clave:ATLAS
LEPTONS
LEPTOQUARKS
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
Descripción
Sumario:A search for new-physics resonances decaying into a lepton and a jet performed by the ATLAS experiment is presented. Scalar leptoquarks pair-produced in pp collisions at s√ = 13 TeV at the Large Hadron Collider are considered using an integrated luminosity of 139 fb−1, corresponding to the full Run 2 dataset. They are searched for in events with two electrons or two muons and two or more jets, including jets identified as arising from the fragmentation of c- or b-quarks. The observed yield in each channel is consistent with the Standard Model background expectation. Leptoquarks with masses below 1.8 TeV and 1.7 TeV are excluded in the electron and muon channels, respectively, assuming a branching ratio into a charged lepton and a quark of 100%, with minimal dependence on the quark flavour. Upper limits on the aforementioned branching ratio are also given as a function of the leptoquark mass.

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