Publication
Search for exotic decays of a Higgs boson into undetectable particles and one or more photons
| dc.contributor.author | CMS collaboration (2314 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 | 2019-02-04T07:19:39Z | |
| dc.date.available | 2019-02-04T07:19:39Z | |
| dc.date.issued | 2016-02-10 | |
| dc.date.updated | 2019-02-04T07:19:38Z | |
| dc.description.abstract | A search is presented for exotic decays of a Higgs boson into undetectable particles and one or two isolated photons in pp collisions at a center-of-mass energy of 8 TeV. The data correspond to an integrated luminosity of up to 19.4 inverse femtobarns collected with the CMS detector at the LHC. Higgs bosons produced in gluon-gluon fusion and in association with a Z boson are investigated, using models in which the Higgs boson decays into a gravitino and a neutralino or a pair of neutralinos, followed by the decay of the neutralino to a gravitino and a photon. The selected events are consistent with the background-only hypothesis, and limits are placed on the product of cross sections and branching fractions. Assuming a standard model Higgs boson production cross section, a 95% confidence level upper limit is set on the branching fraction of a 125 GeV Higgs boson decaying into undetectable particles and one or two isolated photons as a function of the neutralino mass. For this class of models and neutralino masses from 1 to 120 GeV an upper limit in the range of 7 to 13% is obtained. Further results are given as a function of the neutralino lifetime, and also for a range of Higgs boson masses. | |
| dc.description.version | Peer Reviewed | |
| dc.identifier | Phys.Lett. B753 (2016) 363-388; DOI 10.1016/j.physletb.2015.12.017 | |
| dc.identifier.uri | http://dx.doi.org/10.1016/j.physletb.2015.12.017 | |
| dc.identifier.uri | http://hdl.handle.net/10400.26/26877 | |
| dc.language.iso | eng | |
| dc.title | Search for exotic decays of a Higgs boson into undetectable particles and one or more photons | |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| rcaap.rights | openAccess | pt |
| rcaap.type | article |