Observation of an Excited Bc± Meson State with the ATLAS Detector

A search for excited states of the Bc± meson is performed using 4.9 fb-1 of 7 TeV and 19.2 fb-1 of 8 TeV pp collision data collected by the ATLAS experiment at the LHC. A new state is observed through its hadronic transition to the ground state, with the latter detected in the decay Bc±→J/ψπ±. The s...

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Autor principal: Aad, G.
Formato: JOUR
Materias:
Bosons
Ground state
Hadrons
Shear waves
Tellurium compounds
ATLAS detectors
ATLAS experiment
Mass difference
Standard deviation
Wave state
Excited states
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00319007_v113_n21_p_Aad
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00319007_v113_n21_p_Aad
record_format dspace
spelling todo:paper_00319007_v113_n21_p_Aad2023-10-03T14:42:33Z Observation of an Excited Bc± Meson State with the ATLAS Detector Aad, G. Bosons Ground state Hadrons Shear waves Tellurium compounds ATLAS detectors ATLAS experiment Mass difference Standard deviation Wave state Excited states A search for excited states of the Bc± meson is performed using 4.9 fb-1 of 7 TeV and 19.2 fb-1 of 8 TeV pp collision data collected by the ATLAS experiment at the LHC. A new state is observed through its hadronic transition to the ground state, with the latter detected in the decay Bc±→J/ψπ±. The state appears in the m(Bc±π+π-)-m(Bc±)-2m(π±) mass difference distribution with a significance of 5.2 standard deviations. The mass of the observed state is 6842±4±5 MeV, where the first error is statistical and the second is systematic. The mass and decay of this state are consistent with expectations for the second S-wave state of the Bc± meson, Bc±(2S). © 2015 CERN. © 2015 CERN, for the ATLAS Collaboration. Published by the American Physical Society under the terms of the »http://creativecommons.org/licenses/by/3.0/» Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00319007_v113_n21_p_Aad
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Bosons
Ground state
Hadrons
Shear waves
Tellurium compounds
ATLAS detectors
ATLAS experiment
Mass difference
Standard deviation
Wave state
Excited states
spellingShingle Bosons
Ground state
Hadrons
Shear waves
Tellurium compounds
ATLAS detectors
ATLAS experiment
Mass difference
Standard deviation
Wave state
Excited states
Aad, G.
Observation of an Excited Bc± Meson State with the ATLAS Detector
topic_facet Bosons
Ground state
Hadrons
Shear waves
Tellurium compounds
ATLAS detectors
ATLAS experiment
Mass difference
Standard deviation
Wave state
Excited states
description A search for excited states of the Bc± meson is performed using 4.9 fb-1 of 7 TeV and 19.2 fb-1 of 8 TeV pp collision data collected by the ATLAS experiment at the LHC. A new state is observed through its hadronic transition to the ground state, with the latter detected in the decay Bc±→J/ψπ±. The state appears in the m(Bc±π+π-)-m(Bc±)-2m(π±) mass difference distribution with a significance of 5.2 standard deviations. The mass of the observed state is 6842±4±5 MeV, where the first error is statistical and the second is systematic. The mass and decay of this state are consistent with expectations for the second S-wave state of the Bc± meson, Bc±(2S). © 2015 CERN. © 2015 CERN, for the ATLAS Collaboration. Published by the American Physical Society under the terms of the »http://creativecommons.org/licenses/by/3.0/» Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
format JOUR
author Aad, G.
author_facet Aad, G.
author_sort Aad, G.
title Observation of an Excited Bc± Meson State with the ATLAS Detector
title_short Observation of an Excited Bc± Meson State with the ATLAS Detector
title_full Observation of an Excited Bc± Meson State with the ATLAS Detector
title_fullStr Observation of an Excited Bc± Meson State with the ATLAS Detector
title_full_unstemmed Observation of an Excited Bc± Meson State with the ATLAS Detector
title_sort observation of an excited bc± meson state with the atlas detector
url http://hdl.handle.net/20.500.12110/paper_00319007_v113_n21_p_Aad
work_keys_str_mv AT aadg observationofanexcitedbcmesonstatewiththeatlasdetector
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