Publication
Measurement of the mass difference between top and anti-top quarks in pp collisions at $\sqrt(s) = 7$ TeV using the ATLAS detector
| dc.contributor.author | ATLAS collaboration (2935 authors) | |
| dc.contributor.author | Aguilar-Saavedra, Juan Antonio | |
| dc.contributor.author | Amor Dos Santos, Susana Patricia | |
| dc.contributor.author | Anjos, Nuno | |
| dc.contributor.author | Cantrill, Robert | |
| dc.contributor.author | Carvalho, João | |
| dc.contributor.author | Castro, Nuno Filipe | |
| dc.contributor.author | Conde Muiño, Patricia | |
| dc.contributor.author | Costa Batalha Pedro, Rute | |
| dc.contributor.author | Da Cunha Sargedas De Sousa, Mario Jose | |
| dc.contributor.author | Do Valle Wemans, André | |
| 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 | Lopes, Lourenco | |
| dc.contributor.author | Machado Miguens, Joana | |
| dc.contributor.author | Maio, Amélia | |
| dc.contributor.author | Maneira, José | |
| dc.contributor.author | Marques, Carlos | |
| dc.contributor.author | Oliveira, Miguel Alfonso | |
| dc.contributor.author | Onofre, António | |
| dc.contributor.author | Palma, Alberto | |
| dc.contributor.author | Pina, João Antonio | |
| dc.contributor.author | Pinto, Belmiro | |
| 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 | 2019-02-03T23:37:14Z | |
| dc.date.available | 2019-02-03T23:37:14Z | |
| dc.date.issued | 2014-01-20 | |
| dc.date.updated | 2019-02-03T23:37:14Z | |
| dc.description.abstract | A measurement of the mass difference between top and anti-top quarks is presented. In a 4.7 fb$^{-1}$ data sample of proton–proton collisions at √s = 7 TeV recorded with the ATLAS detector at the LHC, events consistent with ttbar production and decay into a single charged lepton final state are reconstructed. For each event, the mass difference between the top and anti-top quark candidate is calculated. A two b-tag requirement is used in order to reduce the background contribution. A maximum likelihood fit to these per-event mass differences yields $\Delta m ≣ m_t - m_{\bar{t}}$ = 0.67 ± 0.61(stat) ± 0.41(syst) GeV, consistent with CPT invariance. | |
| dc.description.version | Peer Reviewed | |
| dc.identifier | Phys.Lett. B728 (2014) 363-379; DOI 10.1016/j.physletb.2013.12.010 | |
| dc.identifier.uri | http://dx.doi.org/10.1016/j.physletb.2013.12.010 | |
| dc.identifier.uri | http://hdl.handle.net/10400.26/26490 | |
| dc.language.iso | eng | |
| dc.title | Measurement of the mass difference between top and anti-top quarks in pp collisions at $\sqrt(s) = 7$ TeV using the ATLAS detector | |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| rcaap.rights | openAccess | pt |
| rcaap.type | article |