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

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...

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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, Wahlberg, Hernán Pablo, The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2018
Materias:
Ciencias Exactas
H → bb decays
V H production
ATLAS detector
Física
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/77724
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-77724
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
H → bb decays
V H production
ATLAS detector
Física
spellingShingle Ciencias Exactas
H → bb decays
V H production
ATLAS detector
Física
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
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
topic_facet Ciencias Exactas
H → bb decays
V H production
ATLAS detector
Física
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.
format Articulo
Articulo
author 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_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_sort Alconada Verzini, María Josefina
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
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
publishDate 2018
url http://sedici.unlp.edu.ar/handle/10915/77724
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