Publication
A search for an excited muon decaying to a muon and two jets in $pp$ collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector
| dc.contributor.author | ATLAS collaboration (2827 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 | 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 | Oleiro Seabra, Luis Filipe | |
| dc.contributor.author | Onofre, António | |
| dc.contributor.author | Palma, Alberto | |
| dc.contributor.author | Pedro, Rute | |
| dc.contributor.author | Pina, João Antonio | |
| 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 | 2019-02-04T09:04:58Z | |
| dc.date.available | 2019-02-04T09:04:58Z | |
| dc.date.issued | 2016-07-12 | |
| dc.date.updated | 2019-02-04T09:04:58Z | |
| dc.description.abstract | A new search signature for excited leptons is explored. Excited muons are sought in the channel ${pp}\to \mu {\mu }^{* }\to \mu \mu \ {\rm{jet}}\,{\rm{jet}}$, assuming both the production and decay occur via a contact interaction. The analysis is based on 20.3 fb(−)(1) of pp collision data at a centre-of-mass energy of $\sqrt{s}\,=\,8\,{\rm{TeV}}$ taken with the ATLAS detector at the large hadron collider. No evidence of excited muons is found, and limits are set at the 95% confidence level on the cross section times branching ratio as a function of the excited-muon mass ${m}_{{\mu }^{* }}$. For ${m}_{{\mu }^{* }}$ between 1.3 and 3.0 TeV, the upper limit on $\sigma B({\mu }^{* }\to \mu q\bar{q}$) is between 0.6 and 1 fb. Limits on $\sigma B$ are converted to lower bounds on the compositeness scale Λ. In the limiting case ${\rm{\Lambda }}={m}_{{\mu }^{* }}$, excited muons with a mass below 2.8 TeV are excluded. With the same model assumptions, these limits at larger ${\mu }^{* }$ masses improve upon previous limits from traditional searches based on the gauge-mediated decay ${\mu }^{* }\to \mu \gamma $. | |
| dc.description.version | Peer Reviewed | |
| dc.identifier | New J.Phys. 18 (2016) 073021; DOI 10.1088/1367-2630/18/7/073021 | |
| dc.identifier.uri | http://dx.doi.org/10.1088/1367-2630/18/7/073021 | |
| dc.identifier.uri | http://hdl.handle.net/10400.26/27012 | |
| dc.language.iso | eng | |
| dc.title | A search for an excited muon decaying to a muon and two jets 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 |