Observation of <math><mi is="true">H</mi><mo stretchy="false" is="true">→</mo><mi is="true">b</mi><mover accent="true" is="true"><mrow is="true"><mi is="true">b</mi></mrow><mrow is...

Autores: Alconada Verzini, María Josefina; Alonso, Francisco; Arduh, Francisco Anuar; Dova, María Teresa; Hoya, Joaquín; Monticelli, Fernando Gabriel; Orellana, Gonzalo; Wahlberg, Hernán Pablo; The ATLAS Collaboration
Año de publicación: 2018
Idioma: inglés
Tipo de recurso: artículo
Estado: versión publicada
Descripción: A search for the decay of the Standard Model Higgs boson into a $b \bar{b}$ pair when produced in association with a W or Z boson is performed with the ATLAS detector. The data, corresponding to an integrated luminosity of $79.8 {fb}^{- 1}$ were collected in proton–proton collisions during Run 2 of the Large Hadron Collider at a centre-of-mass energy of 13 TeV. For a Higgs boson mass of 125 GeV, an excess of events over the expected background from other Standard Model processes is found with an observed (expected) significance of 4.9 (4.3) standard deviations. A combination with the results from other searches in Run 1 and in Run 2 for the Higgs boson in the $b \bar{b}$ decay mode is performed, which yields an observed (expected) significance of 5.4 (5.5) standard deviations, thus providing direct observation of the Higgs boson decay into b-quarks. The ratio of the measured event yield for a Higgs boson decaying into $b \bar{b}$ to the Standard Model expectation is $1.01 \pm 0.12 {(stat .)}_{- 0.15}^{+ 0.16} (syst .)$ . Additionally, a combination of Run 2 results searching for the Higgs boson produced in association with a vector boson yields an observed (expected) significance of 5.3 (4.8) standard deviations.
Facultad de Ciencias Exactas
Materia: Ciencias Exactas
H → bb decays
V H production
ATLAS detector
Física
Nivel de accesibilidad: acceso abierto
Condiciones de uso: http://creativecommons.org/licenses/by/4.0/
Repositorio
Institución: Universidad Nacional de La Plata
OAI Identificador: oai:sedici.unlp.edu.ar:10915/77724

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oai_identifier_str	oai:sedici.unlp.edu.ar:10915/77724
network_acronym_str	SEDICI
repository_id_str	1329
network_name_str	SEDICI (UNLP)
spelling	Observation of <math><mi is="true">H</mi><mo stretchy="false" is="true">→</mo><mi is="true">b</mi><mover accent="true" is="true"><mrow is="true"><mi is="true">b</mi></mrow><mrow is="true"><mo stretchy="false" is="true">¯</mo></mrow></mover></math> decays and VH production with the ATLAS detectorAlconada Verzini, María JosefinaAlonso, FranciscoArduh, Francisco AnuarDova, María TeresaHoya, JoaquínMonticelli, Fernando GabrielOrellana, GonzaloWahlberg, Hernán PabloThe ATLAS CollaborationCiencias ExactasH → bb decaysV H productionATLAS detectorFísicaA search for the decay of the Standard Model Higgs boson into a <math><mi is="true">b</mi><mover accent="true" is="true"><mrow is="true"><mi is="true">b</mi></mrow><mrow is="true"><mo stretchy="false" is="true">¯</mo></mrow></mover></math> pair when produced in association with a W or Z boson is performed with the ATLAS detector. The data, corresponding to an integrated luminosity of <math><mn is="true">79.8</mn><mspace width="0.2em" is="true"></mspace><msup is="true"><mrow is="true"><mi mathvariant="normal" is="true">fb</mi></mrow><mrow is="true"><mo is="true">−</mo><mn is="true">1</mn></mrow></msup></math> were collected in proton–proton collisions during Run 2 of the Large Hadron Collider at a centre-of-mass energy of 13 TeV. For a Higgs boson mass of 125 GeV, an excess of events over the expected background from other Standard Model processes is found with an observed (expected) significance of 4.9 (4.3) standard deviations. A combination with the results from other searches in Run 1 and in Run 2 for the Higgs boson in the <math><mi is="true">b</mi><mover accent="true" is="true"><mrow is="true"><mi is="true">b</mi></mrow><mrow is="true"><mo stretchy="false" is="true">¯</mo></mrow></mover></math> decay mode is performed, which yields an observed (expected) significance of 5.4 (5.5) standard deviations, thus providing direct observation of the Higgs boson decay into b-quarks. The ratio of the measured event yield for a Higgs boson decaying into <math><mi is="true">b</mi><mover accent="true" is="true"><mrow is="true"><mi is="true">b</mi></mrow><mrow is="true"><mo stretchy="false" is="true">¯</mo></mrow></mover></math> to the Standard Model expectation is <math><mn is="true">1.01</mn><mo is="true">±</mo><mn is="true">0.12</mn><msubsup is="true"><mrow is="true"><mo stretchy="false" is="true">(</mo><mi mathvariant="normal" is="true">stat</mi><mo is="true">.</mo><mo stretchy="false" is="true">)</mo></mrow><mrow is="true"><mo is="true">−</mo><mn is="true">0.15</mn></mrow><mrow is="true"><mo is="true">+</mo><mn is="true">0.16</mn></mrow></msubsup><mrow is="true"><mo stretchy="false" is="true">(</mo><mi mathvariant="normal" is="true">syst</mi><mo is="true">.</mo><mo stretchy="false" is="true">)</mo></mrow></math>. Additionally, a combination of Run 2 results searching for the Higgs boson produced in association with a vector boson yields an observed (expected) significance of 5.3 (4.8) standard deviations.Facultad de Ciencias Exactas2018-11-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf59-86http://sedici.unlp.edu.ar/handle/10915/77724enginfo:eu-repo/semantics/altIdentifier/issn/0370-2693info:eu-repo/semantics/altIdentifier/doi/10.1016/j.physletb.2018.09.013info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:12:22Zoai:sedici.unlp.edu.ar:10915/77724Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:12:22.989SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv	Observation of <math><mi is="true">H</mi><mo stretchy="false" is="true">→</mo><mi is="true">b</mi><mover accent="true" is="true"><mrow is="true"><mi is="true">b</mi></mrow><mrow is="true"><mo stretchy="false" is="true">¯</mo></mrow></mover></math> decays and VH production with the ATLAS detector
title	Observation of <math><mi is="true">H</mi><mo stretchy="false" is="true">→</mo><mi is="true">b</mi><mover accent="true" is="true"><mrow is="true"><mi is="true">b</mi></mrow><mrow is="true"><mo stretchy="false" is="true">¯</mo></mrow></mover></math> decays and VH production with the ATLAS detector
spellingShingle	Observation of <math><mi is="true">H</mi><mo stretchy="false" is="true">→</mo><mi is="true">b</mi><mover accent="true" is="true"><mrow is="true"><mi is="true">b</mi></mrow><mrow is="true"><mo stretchy="false" is="true">¯</mo></mrow></mover></math> decays and VH production with the ATLAS detector Alconada Verzini, María Josefina Ciencias Exactas H → bb decays V H production ATLAS detector Física
title_short	Observation of <math><mi is="true">H</mi><mo stretchy="false" is="true">→</mo><mi is="true">b</mi><mover accent="true" is="true"><mrow is="true"><mi is="true">b</mi></mrow><mrow is="true"><mo stretchy="false" is="true">¯</mo></mrow></mover></math> decays and VH production with the ATLAS detector
title_full	Observation of <math><mi is="true">H</mi><mo stretchy="false" is="true">→</mo><mi is="true">b</mi><mover accent="true" is="true"><mrow is="true"><mi is="true">b</mi></mrow><mrow is="true"><mo stretchy="false" is="true">¯</mo></mrow></mover></math> decays and VH production with the ATLAS detector
title_fullStr	Observation of <math><mi is="true">H</mi><mo stretchy="false" is="true">→</mo><mi is="true">b</mi><mover accent="true" is="true"><mrow is="true"><mi is="true">b</mi></mrow><mrow is="true"><mo stretchy="false" is="true">¯</mo></mrow></mover></math> decays and VH production with the ATLAS detector
title_full_unstemmed	Observation of <math><mi is="true">H</mi><mo stretchy="false" is="true">→</mo><mi is="true">b</mi><mover accent="true" is="true"><mrow is="true"><mi is="true">b</mi></mrow><mrow is="true"><mo stretchy="false" is="true">¯</mo></mrow></mover></math> decays and VH production with the ATLAS detector
title_sort	Observation of <math><mi is="true">H</mi><mo stretchy="false" is="true">→</mo><mi is="true">b</mi><mover accent="true" is="true"><mrow is="true"><mi is="true">b</mi></mrow><mrow is="true"><mo stretchy="false" is="true">¯</mo></mrow></mover></math> decays and VH production with the ATLAS detector
dc.creator.none.fl_str_mv	Alconada Verzini, María Josefina Alonso, Francisco Arduh, Francisco Anuar Dova, María Teresa Hoya, Joaquín Monticelli, Fernando Gabriel Orellana, Gonzalo Wahlberg, Hernán Pablo The ATLAS Collaboration
author	Alconada Verzini, María Josefina
author_facet	Alconada Verzini, María Josefina Alonso, Francisco Arduh, Francisco Anuar Dova, María Teresa Hoya, Joaquín Monticelli, Fernando Gabriel Orellana, Gonzalo Wahlberg, Hernán Pablo The ATLAS Collaboration
author_role	author
author2	Alonso, Francisco Arduh, Francisco Anuar Dova, María Teresa Hoya, Joaquín Monticelli, Fernando Gabriel Orellana, Gonzalo Wahlberg, Hernán Pablo The ATLAS Collaboration
author2_role	author author author author author author author author
dc.subject.none.fl_str_mv	Ciencias Exactas H → bb decays V H production ATLAS detector Física
topic	Ciencias Exactas H → bb decays V H production ATLAS detector Física
dc.description.none.fl_txt_mv	A search for the decay of the Standard Model Higgs boson into a <math><mi is="true">b</mi><mover accent="true" is="true"><mrow is="true"><mi is="true">b</mi></mrow><mrow is="true"><mo stretchy="false" is="true">¯</mo></mrow></mover></math> pair when produced in association with a W or Z boson is performed with the ATLAS detector. The data, corresponding to an integrated luminosity of <math><mn is="true">79.8</mn><mspace width="0.2em" is="true"></mspace><msup is="true"><mrow is="true"><mi mathvariant="normal" is="true">fb</mi></mrow><mrow is="true"><mo is="true">−</mo><mn is="true">1</mn></mrow></msup></math> were collected in proton–proton collisions during Run 2 of the Large Hadron Collider at a centre-of-mass energy of 13 TeV. For a Higgs boson mass of 125 GeV, an excess of events over the expected background from other Standard Model processes is found with an observed (expected) significance of 4.9 (4.3) standard deviations. A combination with the results from other searches in Run 1 and in Run 2 for the Higgs boson in the <math><mi is="true">b</mi><mover accent="true" is="true"><mrow is="true"><mi is="true">b</mi></mrow><mrow is="true"><mo stretchy="false" is="true">¯</mo></mrow></mover></math> decay mode is performed, which yields an observed (expected) significance of 5.4 (5.5) standard deviations, thus providing direct observation of the Higgs boson decay into b-quarks. The ratio of the measured event yield for a Higgs boson decaying into <math><mi is="true">b</mi><mover accent="true" is="true"><mrow is="true"><mi is="true">b</mi></mrow><mrow is="true"><mo stretchy="false" is="true">¯</mo></mrow></mover></math> to the Standard Model expectation is <math><mn is="true">1.01</mn><mo is="true">±</mo><mn is="true">0.12</mn><msubsup is="true"><mrow is="true"><mo stretchy="false" is="true">(</mo><mi mathvariant="normal" is="true">stat</mi><mo is="true">.</mo><mo stretchy="false" is="true">)</mo></mrow><mrow is="true"><mo is="true">−</mo><mn is="true">0.15</mn></mrow><mrow is="true"><mo is="true">+</mo><mn is="true">0.16</mn></mrow></msubsup><mrow is="true"><mo stretchy="false" is="true">(</mo><mi mathvariant="normal" is="true">syst</mi><mo is="true">.</mo><mo stretchy="false" is="true">)</mo></mrow></math>. Additionally, a combination of Run 2 results searching for the Higgs boson produced in association with a vector boson yields an observed (expected) significance of 5.3 (4.8) standard deviations. Facultad de Ciencias Exactas
description	A search for the decay of the Standard Model Higgs boson into a <math><mi is="true">b</mi><mover accent="true" is="true"><mrow is="true"><mi is="true">b</mi></mrow><mrow is="true"><mo stretchy="false" is="true">¯</mo></mrow></mover></math> pair when produced in association with a W or Z boson is performed with the ATLAS detector. The data, corresponding to an integrated luminosity of <math><mn is="true">79.8</mn><mspace width="0.2em" is="true"></mspace><msup is="true"><mrow is="true"><mi mathvariant="normal" is="true">fb</mi></mrow><mrow is="true"><mo is="true">−</mo><mn is="true">1</mn></mrow></msup></math> were collected in proton–proton collisions during Run 2 of the Large Hadron Collider at a centre-of-mass energy of 13 TeV. For a Higgs boson mass of 125 GeV, an excess of events over the expected background from other Standard Model processes is found with an observed (expected) significance of 4.9 (4.3) standard deviations. A combination with the results from other searches in Run 1 and in Run 2 for the Higgs boson in the <math><mi is="true">b</mi><mover accent="true" is="true"><mrow is="true"><mi is="true">b</mi></mrow><mrow is="true"><mo stretchy="false" is="true">¯</mo></mrow></mover></math> decay mode is performed, which yields an observed (expected) significance of 5.4 (5.5) standard deviations, thus providing direct observation of the Higgs boson decay into b-quarks. The ratio of the measured event yield for a Higgs boson decaying into <math><mi is="true">b</mi><mover accent="true" is="true"><mrow is="true"><mi is="true">b</mi></mrow><mrow is="true"><mo stretchy="false" is="true">¯</mo></mrow></mover></math> to the Standard Model expectation is <math><mn is="true">1.01</mn><mo is="true">±</mo><mn is="true">0.12</mn><msubsup is="true"><mrow is="true"><mo stretchy="false" is="true">(</mo><mi mathvariant="normal" is="true">stat</mi><mo is="true">.</mo><mo stretchy="false" is="true">)</mo></mrow><mrow is="true"><mo is="true">−</mo><mn is="true">0.15</mn></mrow><mrow is="true"><mo is="true">+</mo><mn is="true">0.16</mn></mrow></msubsup><mrow is="true"><mo stretchy="false" is="true">(</mo><mi mathvariant="normal" is="true">syst</mi><mo is="true">.</mo><mo stretchy="false" is="true">)</mo></mrow></math>. Additionally, a combination of Run 2 results searching for the Higgs boson produced in association with a vector boson yields an observed (expected) significance of 5.3 (4.8) standard deviations.
publishDate	2018
dc.date.none.fl_str_mv	2018-11-10
dc.type.none.fl_str_mv	info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo
format	article
status_str	publishedVersion
dc.identifier.none.fl_str_mv	http://sedici.unlp.edu.ar/handle/10915/77724
url	http://sedici.unlp.edu.ar/handle/10915/77724
dc.language.none.fl_str_mv	eng
language	eng
dc.relation.none.fl_str_mv	info:eu-repo/semantics/altIdentifier/issn/0370-2693 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.physletb.2018.09.013
dc.rights.none.fl_str_mv	info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv	openAccess
rights_invalid_str_mv	http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv	application/pdf 59-86
dc.source.none.fl_str_mv	reponame:SEDICI (UNLP) instname:Universidad Nacional de La Plata instacron:UNLP
reponame_str	SEDICI (UNLP)
collection	SEDICI (UNLP)
instname_str	Universidad Nacional de La Plata
instacron_str	UNLP
institution	UNLP
repository.name.fl_str_mv	SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv	alira@sedici.unlp.edu.ar
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score	13.070432

Observation of <math><mi is="true">H</mi><mo stretchy="false" is="true">→</mo><mi is="true">b</mi><mover accent="true" is="true"><mrow is="true"><mi is="true">b</mi></mrow><mrow is...

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