Publication
Limits on the Higgs boson lifetime and width from its decay to four charged leptons
| dc.contributor.author | CMS collaboration (2318 authors) | |
| dc.contributor.author | Hollar, Jonathan | |
| dc.contributor.author | Calpas, Betty | |
| dc.contributor.author | Nayak, Aruna | |
| dc.contributor.author | Bargassa, Pedrame | |
| dc.contributor.author | Beirão Da Cruz E Silva, Cristóvão | |
| dc.contributor.author | Di Francesco, Agostino | |
| dc.contributor.author | Faccioli, Pietro | |
| dc.contributor.author | Ferreira Parracho, Pedro Guilherme | |
| dc.contributor.author | Gallinaro, Michele | |
| dc.contributor.author | Leonardo, Nuno | |
| dc.contributor.author | Lloret Iglesias, Lara | |
| dc.contributor.author | Nguyen, Federico | |
| dc.contributor.author | Rodrigues Antunes, Joao | |
| dc.contributor.author | Seixas, Joao | |
| dc.contributor.author | Toldaiev, Oleksii | |
| dc.contributor.author | Vadruccio, Daniele | |
| dc.contributor.author | Varela, Joao | |
| dc.contributor.author | Vischia, Pietro | |
| dc.contributor.author | David Tinoco Mendes, Andre | |
| dc.contributor.author | Silva, Pedro | |
| dc.contributor.author | Musella, Pasquale | |
| dc.contributor.author | Pela, Joao | |
| dc.date.accessioned | 2019-02-04T07:30:08Z | |
| dc.date.available | 2019-02-04T07:30:08Z | |
| dc.date.issued | 2015-10-22 | |
| dc.date.updated | 2019-02-04T07:30:08Z | |
| dc.description.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 τH<1.9×10-13 s at the 95% confidence level (C.L.), corresponding to a lower bound on the width of ΓH>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 fΛQ that expresses an anomalous coupling contribution as an on-shell cross-section fraction. The limit on the Higgs boson width is ΓH<46 MeV with fΛQ unconstrained and ΓH<26 MeV 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. | |
| dc.description.version | Peer Reviewed | |
| dc.identifier | Phys.Rev. D92 (2015) 072010; DOI 10.1103/PhysRevD.92.072010 | |
| dc.identifier.uri | http://dx.doi.org/10.1103/PhysRevD.92.072010 | |
| dc.identifier.uri | http://hdl.handle.net/10400.26/26889 | |
| dc.language.iso | eng | |
| dc.title | Limits on the Higgs boson lifetime and width from its decay to four charged leptons | |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| rcaap.rights | openAccess | pt |
| rcaap.type | article |