Search for excited electrons singly produced in proton–proton collisions at √s=13Te with the ATLAS experiment at the LHC

A search for excited electrons produced in pp collisions at √s = 13 TeV via a contact interaction qq¯ → ee∗ is presented. The search uses 36.1 fb−1 of data collected in 2015 and 2016 by the ATLAS experiment at the Large Hadron Collider. Decays of the excited electron into an electron and a pair of q...

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Detalles Bibliográficos
Autores principales: Alconada Verzini, María Josefina, Alonso, Francisco, Arduh, Francisco Anuar, Dova, María Teresa, Hoya, Joaquín, Monticelli, Fernando Gabriel, Orellana, Gonzalo Enrique, Wahlberg, Hernán Pablo, The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2019
Materias:
Física
Physics
Excited state
Nuclear physics
Atlas experiment
Quark
Large hadron collider
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/126742
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-126742
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Physics
Excited state
Nuclear physics
Atlas experiment
Quark
Large hadron collider
spellingShingle Física
Physics
Excited state
Nuclear physics
Atlas experiment
Quark
Large hadron collider
Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Orellana, Gonzalo Enrique
Wahlberg, Hernán Pablo
The ATLAS Collaboration
Search for excited electrons singly produced in proton–proton collisions at √s=13Te with the ATLAS experiment at the LHC
topic_facet Física
Physics
Excited state
Nuclear physics
Atlas experiment
Quark
Large hadron collider
description A search for excited electrons produced in pp collisions at √s = 13 TeV via a contact interaction qq¯ → ee∗ is presented. The search uses 36.1 fb−1 of data collected in 2015 and 2016 by the ATLAS experiment at the Large Hadron Collider. Decays of the excited electron into an electron and a pair of quarks (eqq¯) are targeted in final states with two electrons and two hadronic jets, and decays via a gauge interaction into a neutrino and a W boson (νW) are probed in final states with an electron, missing transverse momentum, and a large-radius jet consistent with a hadronically decaying W boson. No significant excess is observed over the expected backgrounds. Upper limits are calculated for the pp → ee∗ → eeqq¯ and pp → ee∗ → eνW production cross sections as a function of the excited electron mass me∗ at 95% confidence level. The limits are translated into lower bounds on the compositeness scale parameter Λ of the model as a function of me∗ . For me∗ < 0.5 TeV, the lower bound for me is 11 TeV. In the special case of me∗ = Λ, the values of me∗ < 4.8 TeV are excluded. The presented limits on Λ are more stringent than those obtained in previous searches.
format Articulo
Articulo
author Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Orellana, Gonzalo Enrique
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
Orellana, Gonzalo Enrique
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_sort Alconada Verzini, María Josefina
title Search for excited electrons singly produced in proton–proton collisions at √s=13Te with the ATLAS experiment at the LHC
title_short Search for excited electrons singly produced in proton–proton collisions at √s=13Te with the ATLAS experiment at the LHC
title_full Search for excited electrons singly produced in proton–proton collisions at √s=13Te with the ATLAS experiment at the LHC
title_fullStr Search for excited electrons singly produced in proton–proton collisions at √s=13Te with the ATLAS experiment at the LHC
title_full_unstemmed Search for excited electrons singly produced in proton–proton collisions at √s=13Te with the ATLAS experiment at the LHC
title_sort search for excited electrons singly produced in proton–proton collisions at √s=13te with the atlas experiment at the lhc
publishDate 2019
url http://sedici.unlp.edu.ar/handle/10915/126742
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