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Enhanced Higgs boson coupling to charm pairs

We show that current Higgs data permit a significantly enhanced Higgs coupling to charm pairs, comparable to the Higgs to bottom pairs coupling in the Standard Model, without resorting to additional new physics sources in Higgs production. With a mild level of the latter current data even allow for...

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Detalles Bibliográficos
Autores principales: Delaunay, Cédric, Golling, Tobias, Perez, Gilad, Soreq, Yotam
Lenguaje:eng
Publicado: 2013
Materias:
Acceso en línea:https://dx.doi.org/10.1103/PhysRevD.89.033014
http://cds.cern.ch/record/1621790
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author Delaunay, Cédric
Golling, Tobias
Perez, Gilad
Soreq, Yotam
author_facet Delaunay, Cédric
Golling, Tobias
Perez, Gilad
Soreq, Yotam
author_sort Delaunay, Cédric
collection CERN
description We show that current Higgs data permit a significantly enhanced Higgs coupling to charm pairs, comparable to the Higgs to bottom pairs coupling in the Standard Model, without resorting to additional new physics sources in Higgs production. With a mild level of the latter current data even allow for the Higgs to charm pairs to be the dominant decay channel. An immediate consequence of such a large charm coupling is a significant reduction of the Higgs signal strengths into the known final states as in particular into bottom pairs. This might reduce the visible vector-boson associated Higgs production rate to a level that could compromise the prospects of ever observing it. We however demonstrate that a significant fraction of this reduced signal can be recovered by jet-flavor-tagging targeted towards charm-flavored jets. Finally we argue that an enhanced Higgs to charm pairs coupling can be obtained in various new physics scenarios in the presence of only a mild accidental cancellation between various contributions.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2013
record_format invenio
spelling cern-16217902023-03-14T17:42:52Zdoi:10.1103/PhysRevD.89.033014http://cds.cern.ch/record/1621790engDelaunay, CédricGolling, TobiasPerez, GiladSoreq, YotamEnhanced Higgs boson coupling to charm pairsParticle Physics - PhenomenologyWe show that current Higgs data permit a significantly enhanced Higgs coupling to charm pairs, comparable to the Higgs to bottom pairs coupling in the Standard Model, without resorting to additional new physics sources in Higgs production. With a mild level of the latter current data even allow for the Higgs to charm pairs to be the dominant decay channel. An immediate consequence of such a large charm coupling is a significant reduction of the Higgs signal strengths into the known final states as in particular into bottom pairs. This might reduce the visible vector-boson associated Higgs production rate to a level that could compromise the prospects of ever observing it. We however demonstrate that a significant fraction of this reduced signal can be recovered by jet-flavor-tagging targeted towards charm-flavored jets. Finally we argue that an enhanced Higgs to charm pairs coupling can be obtained in various new physics scenarios in the presence of only a mild accidental cancellation between various contributions.We show that current Higgs data permit a significantly enhanced Higgs coupling to charm pairs, comparable to the Higgs-to-bottom pairs coupling in the Standard Model, without resorting to additional new physics sources in Higgs production. With a mild level of the latter current data even allow for the Higgs-to-charm pairs to be the dominant decay channel. An immediate consequence of such a large charm coupling is a significant reduction of the Higgs signal strengths into the known final states as in particular into bottom pairs. This might reduce the visible vector-boson associated Higgs production rate to a level that could compromise the prospects of ever observing it. We however demonstrate that a significant fraction of this reduced signal can be recovered by jet-flavor tagging targeted towards charm-flavored jets. Finally we argue that an enhanced Higgs-to-charm pairs coupling can be obtained in various new physics scenarios in the presence of only a mild accidental cancellation between various contributions.We show that current Higgs data permit a significantly enhanced Higgs coupling to charm pairs, comparable to the Higgs to bottom pairs coupling in the Standard Model, without resorting to additional new physics sources in Higgs production. With a mild level of the latter current data even allow for the Higgs to charm pairs to be the dominant decay channel. An immediate consequence of such a large charm coupling is a significant reduction of the Higgs signal strengths into the known final states as in particular into bottom pairs. This might reduce the visible vector-boson associated Higgs production rate to a level that could compromise the prospects of ever observing it. We however demonstrate that a significant fraction of this reduced signal can be recovered by jet-flavor-tagging targeted towards charm-flavored jets. Finally we argue that an enhanced Higgs to charm pairs coupling can be obtained in various new physics scenarios in the presence of only a mild accidental cancellation between various contributions.arXiv:1310.7029CERN-PH-TH-2013-252LAPTH-062-13CERN-PH-TH-2013-252LAPTH-062-13oai:cds.cern.ch:16217902013-10-25
spellingShingle Particle Physics - Phenomenology
Delaunay, Cédric
Golling, Tobias
Perez, Gilad
Soreq, Yotam
Enhanced Higgs boson coupling to charm pairs
title Enhanced Higgs boson coupling to charm pairs
title_full Enhanced Higgs boson coupling to charm pairs
title_fullStr Enhanced Higgs boson coupling to charm pairs
title_full_unstemmed Enhanced Higgs boson coupling to charm pairs
title_short Enhanced Higgs boson coupling to charm pairs
title_sort enhanced higgs boson coupling to charm pairs
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1103/PhysRevD.89.033014
http://cds.cern.ch/record/1621790
work_keys_str_mv AT delaunaycedric enhancedhiggsbosoncouplingtocharmpairs
AT gollingtobias enhancedhiggsbosoncouplingtocharmpairs
AT perezgilad enhancedhiggsbosoncouplingtocharmpairs
AT soreqyotam enhancedhiggsbosoncouplingtocharmpairs