Publication
Direct top-quark decay width measurement in the $t\bar{t}$ lepton+jets channel at $\sqrt{s}$=8 TeV with the ATLAS experiment
| dc.contributor.author | ATLAS collaboration (2902 authors) | |
| dc.contributor.author | Aguilar-Saavedra, Juan Antonio | |
| dc.contributor.author | Amor Dos Santos, Susana Patricia | |
| dc.contributor.author | Anjos, Nuno | |
| dc.contributor.author | Araque, Juan Pedro | |
| dc.contributor.author | Castro, Nuno Filipe | |
| dc.contributor.author | Conde Muiño, Patricia | |
| dc.contributor.author | Da Cunha Sargedas De Sousa, Mario Jose | |
| dc.contributor.author | Fiolhais, Miguel | |
| dc.contributor.author | Galhardo, Bruno | |
| dc.contributor.author | Gomes, Agostinho | |
| dc.contributor.author | Gonçalo, Ricardo | |
| dc.contributor.author | Jorge, Pedro | |
| dc.contributor.author | Machado Miguens, Joana | |
| dc.contributor.author | Maio, Amélia | |
| dc.contributor.author | Maneira, José | |
| dc.contributor.author | Oleiro Seabra, Luis Filipe | |
| dc.contributor.author | Onofre, António | |
| dc.contributor.author | Pedro, Rute | |
| dc.contributor.author | Santos, Helena | |
| dc.contributor.author | Saraiva, João | |
| dc.contributor.author | Silva, José | |
| dc.contributor.author | Tavares Delgado, Ademar | |
| dc.contributor.author | Veloso, Filipe | |
| dc.contributor.author | Wolters, Helmut | |
| dc.date.accessioned | 2019-02-04T14:01:46Z | |
| dc.date.available | 2019-02-04T14:01:46Z | |
| dc.date.issued | 2018-02-15 | |
| dc.date.updated | 2019-02-04T14:01:46Z | |
| dc.description.abstract | This paper presents a direct measurement of the decay width of the top quark using $t\bar{t}$ events in the lepton+jets final state. The data sample was collected by the ATLAS detector at the LHC in proton–proton collisions at a centre-of-mass energy of 8 TeV and corresponds to an integrated luminosity of 20.2 fb$^{-1}$ . The decay width of the top quark is measured using a template fit to distributions of kinematic observables associated with the hadronically and semileptonically decaying top quarks. The result, $\Gamma _t = 1.76 \pm 0.33~(\text {stat.})~ ^{+0.79-0.68}~(\text {syst.})~\text {GeV}$ for a top-quark mass of 172.5 GeV, is consistent with the prediction of the Standard Model. | |
| dc.description.version | Peer Reviewed | |
| dc.identifier | Eur.Phys.J. C78 (2018) 129; DOI 10.1140/epjc/s10052-018-5595-5 | |
| dc.identifier.uri | http://dx.doi.org/10.1140/epjc/s10052-018-5595-5 | |
| dc.identifier.uri | http://hdl.handle.net/10400.26/27440 | |
| dc.language.iso | eng | |
| dc.title | Direct top-quark decay width measurement in the $t\bar{t}$ lepton+jets channel at $\sqrt{s}$=8 TeV with the ATLAS experiment | |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| rcaap.rights | openAccess | pt |
| rcaap.type | article |