Direct constraint on the Higgs–charm coupling from a search for Higgs boson decays into charm quarks with the ATLAS detector

Vista sencilla de ítem
dc.contributor.authorAad, G.
dc.contributor.authorAbbott, B.
dc.contributor.authorAbbott, D.C.
dc.contributor.authorAbud, A. Abed
dc.contributor.authorAbeling, K.
dc.contributor.authorAbhayasinghe, D.K.
dc.contributor.authorAbidi, S.H.
dc.contributor.authorAboulhorma, A.
dc.contributor.authorAbramowicz, H.
dc.contributor.authorAbreu, H.
dc.contributor.authorAbulaiti, Y.
dc.contributor.authorHoffman, A. C. Abusleme
dc.contributor.authorAcharya, B.S.
dc.contributor.authorAchkar, B.
dc.contributor.authorAdam, L.
dc.contributor.authorBourdarios, C. Adam
dc.contributor.authorAdamczyk, L.
dc.contributor.authorAdamek, L.
dc.contributor.authorAddepalli, S.V.
dc.contributor.authorAdelman, J.
dc.contributor.authorAdiguzel, A.
dc.contributor.authorAdorni, S.
dc.contributor.authorAdye, T.
dc.contributor.authorAffolder, A.A.
dc.contributor.authorAfik, Y.
dc.contributor.authorAgaras, M.N.
dc.contributor.authorAgarwala, J.
dc.contributor.authorAggarwal, A.
dc.contributor.authorAgheorghiesei, C.
dc.contributor.authorAguilar Saavedra, J.A.
dc.contributor.authorAhmad, A.
dc.contributor.authorAhmadov, F.
dc.contributor.authorAhmed, W.S.
dc.contributor.authorAi, X.
dc.contributor.authorAielli, G.
dc.contributor.authorAizenberg, I.
dc.contributor.authorAkbiyik, M.
dc.contributor.authorÅkesson, T.P.A.
dc.contributor.authorAkimov, A.V.
dc.contributor.authorKhoury, K. Al
dc.contributor.authorAlberghi, G.L.
dc.contributor.authorAlbert, J.
dc.contributor.authorAlbicocco, P.
dc.contributor.authorVerzini, M. J. Alconada
dc.contributor.authorAlderweireldt, S.
dc.contributor.authorAleksa, M.
dc.contributor.authorAleksandrov, I.N.
dc.contributor.authorAlexa, C.
dc.contributor.authorAlexopoulos, T.
dc.contributor.authorAlfonsi, A.
dc.contributor.authorAlfonsi, F.
dc.contributor.authorAlhroob, M.
dc.contributor.authorAli, B.
dc.contributor.authorAli, S.
dc.contributor.authorAliev, M.
dc.contributor.authorAlimonti, G.
dc.contributor.authorAllaire, C.
dc.contributor.authorAllbrooke, B.M.M.
dc.contributor.authorAllport, P.P.
dc.contributor.authorAloisio, A.
dc.date.accessioned2023-10-31T22:34:26Z
dc.date.available2023-10-31T22:34:26Z
dc.date.issued2022-08
dc.descriptionIndexación: Scopus.es
dc.description.abstractA search for the Higgs boson decaying into a pair of charm quarks is presented. The analysis uses proton–proton collisions to target the production of a Higgs boson in association with a leptonically decaying W or Z boson. The dataset delivered by the LHC at a centre-of-mass energy of [InlineEquation not available: see fulltext.] and recorded by the ATLAS detector corresponds to an integrated luminosity of 139 fb-1. Flavour-tagging algorithms are used to identify jets originating from the hadronisation of charm quarks. The analysis method is validated with the simultaneous measurement of WW, WZ and ZZ production, with observed (expected) significances of 2.6 (2.2) standard deviations above the background-only prediction for the (W/ Z) Z(→ cc¯) process and 3.8 (4.6) standard deviations for the (W/ Z) W(→ cq) process. The (W/ Z) H(→ cc¯) search yields an observed (expected) upper limit of 26 (31) times the predicted Standard Model cross-section times branching fraction for a Higgs boson with a mass of [InlineEquation not available: see fulltext.], corresponding to an observed (expected) constraint on the charm Yukawa coupling modifier |κc|<8.5(12.4), at the 95% confidence level. A combination with the ATLAS (W/ Z) H, H→ bb¯ analysis is performed, allowing the ratio κc/ κb to be constrained to less than 4.5 at the 95% confidence level, smaller than the ratio of the b- and c-quark masses, and therefore determines the Higgs-charm coupling to be weaker than the Higgs-bottom coupling at the 95% confidence level. © 2022, The Author(s).es
dc.description.urihttps://link-springer-com.recursosbiblioteca.unab.cl/article/10.1140/epjc/s10052-022-10588-3
dc.identifier.citationEuropean Physical Journal C, Volume 82, Issue 8, August 2022, Article number 717es
dc.identifier.doi10.1140/epjc/s10052-022-10588-3
dc.identifier.issn1434-6044
dc.identifier.urihttps://repositorio.unab.cl/xmlui/handle/ria/53768
dc.language.isoenes
dc.publisherInstitute for Ionicses
dc.rights.licenseCC BY 4.0 DEED Attribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/deed.en
dc.subjectBosones
dc.subjectPartonses
dc.subjectHiggs Bosonses
dc.titleDirect constraint on the Higgs–charm coupling from a search for Higgs boson decays into charm quarks with the ATLAS detectores
dc.typeArtículoes
Archivos
Bloque original
Mostrando 1 - 1 de 1
No hay miniatura disponible
Nombre:
Aad_Direct_constraint_on_the_higgs.pdf
Tamaño:
6.49 MB
Formato:
Adobe Portable Document Format
Descripción:
TEXTO COMPLETO EN INGLES
Descargar
Bloque de licencias
Mostrando 1 - 1 de 1
No hay miniatura disponible
Nombre:
license.txt
Tamaño:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descripción:
Descargar
Colecciones
FCE - Artículos de Revista