Search for new phenomena in events with at least three photons collected in pp collisions at √s = 8 TeV with the ATLAS detector

Results of a search for new phenomena in events with at least three photons are reported. Data from proton–proton collisions at a centre-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 20.3 fb−1, were collected with the ATLAS detector at the LHC. The observed data are well desc...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Alconada Verzini, María Josefina, Alonso, Francisco, Arduh, Francisco Anuar, Dova, María Teresa, Monticelli, Fernando Gabriel, Wahlberg, Hernán Pablo, The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2016
Materias:
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/79292
Aporte de:
id I19-R120-10915-79292
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
proton-proton collisions
Fotones
Higgs boson
ATLAS detector
spellingShingle Ciencias Exactas
Física
proton-proton collisions
Fotones
Higgs boson
ATLAS detector
Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
Search for new phenomena in events with at least three photons collected in pp collisions at √s = 8 TeV with the ATLAS detector
topic_facet Ciencias Exactas
Física
proton-proton collisions
Fotones
Higgs boson
ATLAS detector
description Results of a search for new phenomena in events with at least three photons are reported. Data from proton–proton collisions at a centre-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 20.3 fb−1, were collected with the ATLAS detector at the LHC. The observed data are well described by the Standard Model. Limits at the 95 % confidence level on new phenomena are presented based on the rate of events in an inclusive signal region and a restricted signal region targeting the rare decay Z → 3γ, as well as di-photon and tri-photon resonance searches. For a Standard Model Higgs boson decaying to four photons via a pair of intermediate pseudoscalar particles (a), limits are found to be σ ×BR(h → aa)×BR(a → γ γ )2 < 10−3σSM for 10 GeV < ma < 62 GeV. Limits are also presented for Higgs boson-like scalars (H) for mH > 125 GeV, and for a Z decaying to three photons via Z → a + γ → 3γ . Additionally, the observed limit on the branching ratio of the Z boson decay to three photons is found to be BR(Z → 3γ ) < 2.2 × 10−6, a result five times stronger than the previous result from LEP.
format Articulo
Articulo
author Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_facet Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_sort Alconada Verzini, María Josefina
title Search for new phenomena in events with at least three photons collected in pp collisions at √s = 8 TeV with the ATLAS detector
title_short Search for new phenomena in events with at least three photons collected in pp collisions at √s = 8 TeV with the ATLAS detector
title_full Search for new phenomena in events with at least three photons collected in pp collisions at √s = 8 TeV with the ATLAS detector
title_fullStr Search for new phenomena in events with at least three photons collected in pp collisions at √s = 8 TeV with the ATLAS detector
title_full_unstemmed Search for new phenomena in events with at least three photons collected in pp collisions at √s = 8 TeV with the ATLAS detector
title_sort search for new phenomena in events with at least three photons collected in pp collisions at √s = 8 tev with the atlas detector
publishDate 2016
url http://sedici.unlp.edu.ar/handle/10915/79292
work_keys_str_mv AT alconadaverzinimariajosefina searchfornewphenomenaineventswithatleastthreephotonscollectedinppcollisionsats8tevwiththeatlasdetector
AT alonsofrancisco searchfornewphenomenaineventswithatleastthreephotonscollectedinppcollisionsats8tevwiththeatlasdetector
AT arduhfranciscoanuar searchfornewphenomenaineventswithatleastthreephotonscollectedinppcollisionsats8tevwiththeatlasdetector
AT dovamariateresa searchfornewphenomenaineventswithatleastthreephotonscollectedinppcollisionsats8tevwiththeatlasdetector
AT monticellifernandogabriel searchfornewphenomenaineventswithatleastthreephotonscollectedinppcollisionsats8tevwiththeatlasdetector
AT wahlberghernanpablo searchfornewphenomenaineventswithatleastthreephotonscollectedinppcollisionsats8tevwiththeatlasdetector
AT theatlascollaboration searchfornewphenomenaineventswithatleastthreephotonscollectedinppcollisionsats8tevwiththeatlasdetector
bdutipo_str Repositorios
_version_ 1764820486490947585