Search for dark matter produced in association with a Higgs boson decaying to a t lepton pair in proton-proton collisions at V¯s = 13 TeV

A search for dark matter particles produced in association with a Higgs boson decaying into a pair of t leptons is performed using data collected in proton-proton collisions at a center-of-mass energy of 13 TeV with the CMS detector. The analysis is based on a data set corresponding to an integrated...

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Detalles Bibliográficos
Autores: Chekhovsky, V., Hayrapetyan, A., Makarenko, V., Blanco Fernández, Sergio, Cabrillo Bartolomé, José Ibán, Calderón Tazón, Alicia|||0000-0002-7205-2040, Duarte Campderros, Jorge|||0000-0003-0687-5214, Fernández García, Marcos|||0000-0002-4824-1087, Gómez Gramuglio, Gervasio|||0000-0002-1077-6553, Lasaosa García, Clara, López Ruiz, Rubén, Martínez Rivero, Celso, Martínez Ruiz del Árbol, Pablo|||0000-0002-7737-5121, Matorras Weinig, Francisco|||0000-0003-4295-5668, Matorras Cuevas, Pablo|||0000-0001-7481-7273, Navarrete Ramos, Efrén|||0000-0002-5180-4020, Piedra Gómez, Jonatan|||0000-0002-9157-1700, Scodellaro, Luca|||0000-0002-4974-8330, Vila Álvarez, Iván|||0000-0002-6797-7209, Vizán García, Jesús Manuel|||0000-0002-6823-8854
Tipo de recurso: artículo
Fecha de publicación:2025
País:España
Institución:Universidad de Cantabria (UC)
Repositorio:UCrea Repositorio Abierto de la Universidad de Cantabria
Idioma:inglés
OAI Identifier:oai:repositorio.unican.es:10902/38512
Acceso en línea:https://hdl.handle.net/10902/38512
Access Level:acceso abierto
Palabra clave:Dark Matter
Hadron-Hadron Scattering
Higgs Physics
Tau Physics
Descripción
Sumario:A search for dark matter particles produced in association with a Higgs boson decaying into a pair of t leptons is performed using data collected in proton-proton collisions at a center-of-mass energy of 13 TeV with the CMS detector. The analysis is based on a data set corresponding to an integrated luminosity of 101 fb-1 collected in 2017-2018. No significant excess over the expected standard model background is observed. This result is interpreted within the frameworks of the 2HDM+a and baryonic Z' benchmark simplified models. The 2HDM+a model is a type-II two-Higgs-doublet model featuring a heavy pseudoscalar with an additional light pseudoscalar. Upper limits at 95% confidence level are set on the product of the production cross section and the branching fraction for each of these two simplified models. Heavy pseudoscalar boson masses between 400 and 700 GeV are excluded for a light pseudoscalar mass of 100 GeV. For the baryonic Z' model, a statistical combination is made with an earlier search based on a data set of 36 fb-1 collected in 2016. In this model, Z' boson masses up to 1050 GeV are excluded for a dark matter particle mass of 1 GeV.

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