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| Título: | Limits on the Higgs boson lifetime and width from its decay to four charged leptons |
Autor: | Khachatryan, V.; Cabrillo, I. J. CSIC ORCID ; Calderon, Alicia ; Castiñeiras De Saa, J. R. CSIC; Castro Manzano, P. de CSIC ORCID; Duarte Campderros, J. CSIC ORCID ; Fernández-García, Marcos CSIC ORCID ; Gómez, Gervasio CSIC ORCID ; Graziano, A. CSIC; López Virto, A. CSIC ORCID ; Marco, Jesús CSIC ORCID ; Marco, Rafael CSIC; Martínez-Rivero, Celso CSIC ORCID ; Matorras, Francisco CSIC ORCID ; Muñoz Sánchez, F. J. CSIC ORCID; Piedra, Jonatan CSIC ORCID ; Rodrigo, Teresa CSIC ORCID ; Rodríguez Marrero, Ana Y. CSIC; Ruiz Jimeno, Alberto CSIC ORCID ; Scodellaro, Luca CSIC ORCID ; Vila, Iván CSIC ORCID; Vilar Cortabitarte, R. CSIC ORCID; CMS Collaboration | Fecha de publicación: | 2015 | Editor: | American Physical Society | Citación: | Physical Review D 92(7): 072010 (2015) | Resumen: | Constraints on the lifetime and width of the Higgs boson are obtained from H→ZZ→4ℓ events using data recorded by the CMS experiment during the LHC run 1 with an integrated luminosity of 5.1 and 19.7fb-1 at a center-of-mass energy of 7 and 8 TeV, respectively. The measurement of the Higgs boson lifetime is derived from its flight distance in the CMS detector with an upper bound of τH<1.9×10-13s at the 95% confidence level (C.L.), corresponding to a lower bound on the width of ΓH>3.5×10-9MeV. The measurement of the width is obtained from an off-shell production technique, generalized to include anomalous couplings of the Higgs boson to two electroweak bosons. From this measurement, a joint constraint is set on the Higgs boson width and a parameter fΛQ that expresses an anomalous coupling contribution as an on-shell cross-section fraction. The limit on the Higgs boson width is ΓH<46MeV with fΛQ unconstrained and ΓH<26MeV for fΛQ=0 at the 95% C.L. The constraint fΛQ<3.8×10-3 at the 95% C.L. is obtained for the expected standard model Higgs boson width. | Descripción: | This article is available under the terms of the Creative Commons Attribution 3.0 License.-- et al. | Versión del editor: | https://doi.org/10.1103/PhysRevD.92.072010 | URI: | http://hdl.handle.net/10261/140031 | DOI: | 10.1103/PhysRevD.92.072010 | Identificadores: | doi: 10.1103/PhysRevD.92.072010 e-issn: 1550-2368 issn: 1550-7998 |
| Aparece en las colecciones: | (IFCA) Artículos |
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| LimitsHiggsboson.pdf | 804,53 kB | Adobe PDF |  Visualizar/Abrir |
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