Publication
Search for Anomalous Single Top Quark Production in Association with a Photon in $pp$ Collisions at $ \sqrt{s}=8 $ TeV
| dc.contributor.author | CMS collaboration (2307 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 | 2019-02-04T08:34:49Z | |
| dc.date.available | 2019-02-04T08:34:49Z | |
| dc.date.issued | 2016-04-06 | |
| dc.date.updated | 2019-02-04T08:34:49Z | |
| dc.description.abstract | The result of a search for flavor changing neutral currents (FCNC) through single top quark production in association with a photon is presented. The study is based on proton-proton collisions at a center-of-mass energy of 8 TeV using data collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 19.8 fb$^{−1}$. The search for tγ events where t → Wb and W → μν is conducted in final states with a muon, a photon, at least one hadronic jet with at most one being consistent with originating from a bottom quark, and missing transverse momentum. No evidence of single top quark production in association with a photon through a FCNC is observed. Upper limits at the 95% confidence level are set on the tuγ and tcγ anomalous couplings and translated into upper limits on the branching fraction of the FCNC top quark decays: ℬ(t → uγ) < 1.3 × 10$^{− 4}$ and ℬ(t → cγ) < 1.7 × 10$^{− 3}$. Upper limits are also set on the cross section of associated tγ production in a restricted phase-space region. These are the most stringent limits currently available. | |
| dc.description.version | Peer Reviewed | |
| dc.identifier | JHEP 1604 (2016) 035; DOI 10.1007/JHEP04(2016)035 | |
| dc.identifier.uri | http://dx.doi.org/10.1007/JHEP04(2016)035 | |
| dc.identifier.uri | http://hdl.handle.net/10400.26/26970 | |
| dc.language.iso | eng | |
| dc.title | Search for Anomalous Single Top Quark Production in Association with a Photon in $pp$ Collisions at $ \sqrt{s}=8 $ TeV | |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| rcaap.rights | openAccess | pt |
| rcaap.type | article |