Publicação
Search for $W' \rightarrow tb \rightarrow qqbb$ decays in $pp$ collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector
| dc.contributor.author | ATLAS collaboration (2891 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 | Cantrill, Robert | |
| 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 | 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 | Onofre, António | |
| dc.contributor.author | Palma, Alberto | |
| dc.contributor.author | Pedro, Rute | |
| 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 | 2019-02-04T04:32:41Z | |
| dc.date.available | 2019-02-04T04:32:41Z | |
| dc.date.issued | 2015-04-24 | |
| dc.date.updated | 2019-02-04T04:32:41Z | |
| dc.description.abstract | A search for a massive $W'$ gauge boson decaying to a top quark and a bottom quark is performed with the ATLAS detector in $pp$ collisions at the LHC. The dataset was taken at a centre-of-mass energy of $\sqrt{s} = 8{\mathrm {\ TeV}}$ and corresponds to $20.3\,\text{ fb }^{-1}$ of integrated luminosity. This analysis is done in the hadronic decay mode of the top quark, where novel jet substructure techniques are used to identify jets from high-momentum top quarks. This allows for a search for high-mass $W'$ bosons in the range 1.5–3.0 ${\mathrm {\ TeV}}$ . $b$ -tagging is used to identify jets originating from $b$ -quarks. The data are consistent with Standard Model background-only expectations, and upper limits at 95 % confidence level are set on the $W'\rightarrow tb$ cross section times branching ratio ranging from $0.16\,\mathrm {pb}$ to $0.33\,\mathrm {pb}$ for left-handed $W'$ bosons, and ranging from $0.10\,\mathrm {pb}$ to $0.21\,\mathrm {pb}$ for $W'$ bosons with purely right-handed couplings. Upper limits at 95 % confidence level are set on the $W'$ -boson coupling to $tb$ as a function of the $W'$ mass using an effective field theory approach, which is independent of details of particular models predicting a $W'$ boson. | |
| dc.description.version | Peer Reviewed | |
| dc.identifier | Eur.Phys.J. C75 (2015) 165; DOI 10.1140/epjc/s10052-015-3372-2 | |
| dc.identifier.uri | http://dx.doi.org/10.1140/epjc/s10052-015-3372-2 | |
| dc.identifier.uri | http://hdl.handle.net/10400.26/26658 | |
| dc.language.iso | eng | |
| dc.title | Search for $W' \rightarrow tb \rightarrow qqbb$ decays in $pp$ collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector | |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| rcaap.rights | openAccess | pt |
| rcaap.type | article |