Search for pair production of Higgsinos in final states with at least three b-tagged jets in √s = 13 TeV pp collisions using the ATLAS detector

A search for pair production of the supersymmetric partners of the Higgs boson (higgsinos H ̃ ) in gauge-mediated scenarios is reported. Each higgsino is assumed to decay to a Higgs boson and a gravitino. Two complementary analyses, targeting high- and low-mass signals, are performed to maximize sen...

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Autores principales: Alconada Verzini, María Josefina, Alonso, Francisco, Arduh, Francisco Anuar, Dova, María Teresa, Hoya, Joaquín, Monticelli, Fernando Gabriel, Wahlberg, Hernán Pablo, The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2018
Materias:
Ciencias Exactas
Física
supersymmetry
Higgs boson
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/79733
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-79733
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Física
supersymmetry
Higgs boson
spellingShingle Ciencias Exactas
Física
supersymmetry
Higgs boson
Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
Search for pair production of Higgsinos in final states with at least three b-tagged jets in √s = 13 TeV pp collisions using the ATLAS detector
topic_facet Ciencias Exactas
Física
supersymmetry
Higgs boson
description A search for pair production of the supersymmetric partners of the Higgs boson (higgsinos H ̃ ) in gauge-mediated scenarios is reported. Each higgsino is assumed to decay to a Higgs boson and a gravitino. Two complementary analyses, targeting high- and low-mass signals, are performed to maximize sensitivity. The two analyses utilize LHC pp collision data at a center-of-mass energy √s = 13 TeV, the former with an integrated luminosity of 36.1 fb<sup>−1</sup> and the latter with 24.3 fb<sup>−1</sup>, collected with the ATLAS detector in 2015 and 2016. The search is performed in events containing missing transverse momentum and several energetic jets, at least three of which must be identified as b-quark jets. No significant excess is found above the predicted background. Limits on the cross section are set as a function of the mass of the H ̃ in simplified models assuming production via mass-degenerate higgsinos decaying to a Higgs boson and a gravitino. Higgsinos with masses between 130 and 230 GeV and between 290 and 880 GeV are excluded at the 95% confidence level. Interpretations of the limits in terms of the branching ratio of the higgsino to a Z boson or a Higgs boson are also presented, and a 45% branching ratio to a Higgs boson is excluded for m<sub>H ̃</sub> ≈ 400 GeV.
format Articulo
Articulo
author Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_facet Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_sort Alconada Verzini, María Josefina
title Search for pair production of Higgsinos in final states with at least three b-tagged jets in √s = 13 TeV pp collisions using the ATLAS detector
title_short Search for pair production of Higgsinos in final states with at least three b-tagged jets in √s = 13 TeV pp collisions using the ATLAS detector
title_full Search for pair production of Higgsinos in final states with at least three b-tagged jets in √s = 13 TeV pp collisions using the ATLAS detector
title_fullStr Search for pair production of Higgsinos in final states with at least three b-tagged jets in √s = 13 TeV pp collisions using the ATLAS detector
title_full_unstemmed Search for pair production of Higgsinos in final states with at least three b-tagged jets in √s = 13 TeV pp collisions using the ATLAS detector
title_sort search for pair production of higgsinos in final states with at least three b-tagged jets in √s = 13 tev pp collisions using the atlas detector
publishDate 2018
url http://sedici.unlp.edu.ar/handle/10915/79733
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