Publication
Search for a scalar partner of the top quark in the jets plus missing transverse momentum final state at $\sqrt{s}$=13 TeV with the ATLAS detector
| dc.contributor.author | ATLAS collaboration (2873 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 | Carvalho, João | |
| 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 | 2019-02-04T14:00:56Z | |
| dc.date.available | 2019-02-04T14:00:56Z | |
| dc.date.issued | 2017-12-15 | |
| dc.date.updated | 2019-02-04T14:00:55Z | |
| dc.description.abstract | A search for pair production of a scalar partner of the top quark in events with four or more jets plus missing transverse momentum is presented. An analysis of 36.1 fb$^{−1}$ of $ \sqrt{s}=13 $ TeV proton-proton collisions collected using the ATLAS detector at the LHC yields no significant excess over the expected Standard Model background. To interpret the results a simplified supersymmetric model is used where the top squark is assumed to decay via $ {\tilde{t}}_1\to {t}^{\left(\ast \right)}{\tilde{\upchi}}_1^0 $ and $ {\tilde{t}}_1\to b{\tilde{\upchi}}_1^{\pm}\to b{W}^{\left(\ast \right)}{\tilde{\upchi}}_1^0 $ , where χ$_{1}^{0}$ (χ$_{1}^{±}$ ) denotes the lightest neutralino (chargino). Exclusion limits are placed in terms of the top-squark and neutralino masses. Assuming a branching ratio of 100% to $ t{\tilde{\upchi}}_1^0 $ , top-squark masses in the range 450–1000 GeV are excluded for $ {\tilde{\upchi}}_1^0 $ masses below 160 GeV. In the case where $ {m}_{{\tilde{t}}_1}\sim {m}_t+{m}_{{\tilde{\chi}}_1^0} $ , top-squark masses in the range 235–590 GeV are excluded. | |
| dc.description.version | Peer Reviewed | |
| dc.identifier | JHEP 1712 (2017) 085; DOI 10.1007/JHEP12(2017)085 | |
| dc.identifier.uri | http://dx.doi.org/10.1007/JHEP12(2017)085 | |
| dc.identifier.uri | http://hdl.handle.net/10400.26/27439 | |
| dc.language.iso | eng | |
| dc.title | Search for a scalar partner of the top quark in the jets plus missing transverse momentum final state at $\sqrt{s}$=13 TeV with the ATLAS detector | |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| rcaap.rights | openAccess | pt |
| rcaap.type | article |