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Search for bottom-squark pair production in pp collision events at √s = 13 TeV with hadronically decaying ꞇ-leptons, b-jets, and missing transverse momentum using the ATLAS detector

Author
Aad, G.; ATLAS Collaboration; Alvarez Estévez, Manuel; Barreiro Alonso, Fernando; Calvente López, Sergio; Camarero Muñoz, Danieluntranslated; Peso Malagón, José deluntranslated; Glasman Kuguel, Claudia Beatrizuntranslated; Terrón Cuadrado, Juanuntranslated
Entity
UAM. Departamento de Física Teórica
Publisher
American Physical Society
Date
2021-08-31
Citation
10.1103/PhysRevD.104.032014
Physical Review D 104.3 (2021): 032014
 
 
 
ISSN
2470-0010 (print); 2470-0029 (online)
DOI
10.1103/PhysRevD.104.032014
Editor's Version
https://doi.org/10.1103/PhysRevD.104.032014
Subjects
Boson; Partons; Higgs Bosons; Física
URI
http://hdl.handle.net/10486/705508
Note
Artículo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, el nombre del grupo de colaboración, si le hubiere, y los autores pertenecientes a la UAM
Rights
© 2021 CERN, for the ATLAS Collaboration

Abstract

A search for pair production of bottom squarks in events with hadronically decaying ꞇ-leptons, b-tagged jets, and large missing transverse momentum is presented. The analyzed dataset is based on proton-proton collisions at √s = 13 TeV delivered by the Large Hadron Collider and recorded by the ATLAS detector from 2015 to 2018, and corresponds to an integrated luminosity of 139 fb-1. The observed data are compatible with the expected Standard Model background. Results are interpreted in a simplified model where each bottom squark is assumed to decay into the second-lightest neutralino χ 20 and a bottom quark, with χ 20 decaying into a Higgs boson and the lightest neutralino χ 10. The search focuses on final states where at least one Higgs boson decays into a pair of hadronically decaying ꞇ-leptons. This allows the acceptance and thus the sensitivity to be significantly improved relative to the previous results at low masses of the χ 20, where bottom-squark masses up to 850 GeV are excluded at the 95% confidence level, assuming a mass difference of 130 GeV between χ 20 and χ 10. Model-independent upper limits are also set on the cross section of processes beyond the Standard Model
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Google™ Scholar:Aad, G. - ATLAS Collaboration - Alvarez Estévez, Manuel - Barreiro Alonso, Fernando - Calvente López, Sergio - Camarero Muñoz, Daniel - Peso Malagón, José del - Glasman Kuguel, Claudia Beatriz - Terrón Cuadrado, Juan

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  • Producción científica en acceso abierto de la UAM [16545]

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All the documents from Biblos-e Archivo are protected by copyrights. Some rights reserved.
Universidad Autónoma de Madrid. Biblioteca
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