Publication
Measurement of Top Quark Polarisation in T-Channel Single Top Quark Production
| dc.contributor.author | CMS collaboration (2299 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 | 2019-02-04T08:33:14Z | |
| dc.date.available | 2019-02-04T08:33:14Z | |
| dc.date.issued | 2016-04-13 | |
| dc.date.updated | 2019-02-04T08:33:13Z | |
| dc.description.abstract | A first measurement of the top quark spin asymmetry, sensitive to the top quark polarisation, in t-channel single top quark production is presented. It is based on a sample of pp collisions at a centre-of-mass energy of 8 TeV corresponding to an integrated luminosity of 19.7 fb$^{−1}$. A high-purity sample of t-channel single top quark events with an isolated muon is selected. Signal and background components are estimated using a fit to data. A differential cross section measurement, corrected for detector effects, of an angular observable sensitive to the top quark polarisation is performed. The differential distribution is used to extract a top quark spin asymmetry of 0.26 ± 0.03(stat) ± 0.10(syst), which is compatible with a p-value of 4.6% with the standard model prediction of 0.44. | |
| dc.description.version | Peer Reviewed | |
| dc.identifier | JHEP 1604 (2016) 073; DOI 10.1007/JHEP04(2016)073 | |
| dc.identifier.uri | http://dx.doi.org/10.1007/JHEP04(2016)073 | |
| dc.identifier.uri | http://hdl.handle.net/10400.26/26967 | |
| dc.language.iso | eng | |
| dc.title | Measurement of Top Quark Polarisation in T-Channel Single Top Quark Production | |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| rcaap.rights | openAccess | pt |
| rcaap.type | article |