Buscar

Estamos realizando la búsqueda. Por favor, espere...

 Detalle_Publicacion

Limits on the Higgs boson lifetime and width from its decay to four charged leptons

Abstract: 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 19.7??fb-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 tH<1.9×10-13??s at the 95% confidence level (C.L.), corresponding to a lower bound on the width of GH>3.5×10-9??MeV. 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 f?Q that expresses an anomalous coupling contribution as an on-shell cross-section fraction. The limit on the Higgs boson width is GH<46??MeV with f?Q unconstrained and GH<26??MeV for f?Q=0 at the 95% C.L. The constraint f?Q<3.8×10-3 at the 95% C.L. is obtained for the expected standard model Higgs boson width.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Fuente: Phys. Rev. D, Vol. 92, Num. 10, Pag. 072010 (2015)

Editorial: American Physical Society

 Fecha de publicación: 01/10/2015

Nº de páginas: 28

Tipo de publicación: Artículo de Revista

 DOI: 10.1103/PhysRevD.92.072010

ISSN: 1550-7998,1550-2368,2470-0010,2470-0029

Proyecto español: FPA2014-55295-C3-1-R ; FPA 2011-28694-C02-01

Url de la publicación: https://doi.org/10.1103/PhysRevD.92.072010

Autores/as

KHACHATRYAN, VLADIMIR

JUAN RAMON CASTIÑEIRAS DE SAA

PABLO DE CASTRO MANZANO

ALBERTO GRAZIANO

MARIA AMPARO LOPEZ VIRTO

RAFAEL JOSE MARCO DE LUCAS

FRANCISCA JAVIELA MUÑOZ SANCHEZ

ANA YAIZA RODRIGUEZ MARRERO