Publication
Search for narrow resonances in dilepton mass spectra in $pp$ collisions at $\sqrt{s}=7$ TeV
| dc.contributor.author | CMS collaboration (2215 authors) | |
| dc.contributor.author | Hollar, Jonathan | |
| dc.contributor.author | Nayak, Aruna | |
| dc.contributor.author | Almeida, Nuno | |
| dc.contributor.author | Bargassa, Pedrame | |
| dc.contributor.author | David Tinoco Mendes, Andre | |
| dc.contributor.author | Faccioli, Pietro | |
| dc.contributor.author | Fernandes, Miguel | |
| dc.contributor.author | Ferreira Parracho, Pedro Guilherme | |
| dc.contributor.author | Gallinaro, Michele | |
| dc.contributor.author | Seixas, Joao | |
| dc.contributor.author | Varela, Joao | |
| dc.contributor.author | Vischia, Pietro | |
| dc.contributor.author | Lloret Iglesias, Lara | |
| dc.contributor.author | Musella, Pasquale | |
| dc.contributor.author | Rodrigues Antunes, Joao | |
| dc.contributor.author | Silva, Pedro | |
| dc.contributor.author | Pela, Joao | |
| dc.contributor.author | Leonardo, Nuno | |
| dc.date.accessioned | 2019-02-03T20:10:19Z | |
| dc.date.available | 2019-02-03T20:10:19Z | |
| dc.date.issued | 2013-07-16 | |
| dc.date.updated | 2019-02-03T20:10:19Z | |
| dc.description.abstract | A search for narrow, high-mass resonances decaying to electron or muon pairs has been performed using pp collision data collected at sqrt(s) = 7 TeV by the CMS experiment in 2011. The data sample corresponds to an integrated luminosity of approximately 5 inverse femtobarns. The event yields observed in the signal regions are consistent with predictions of the standard model backgrounds, and upper limits on the cross section times branching fraction for a resonance decaying to dileptons are extracted from a shape analysis of the dilepton invariant mass distribution. The resulting mass limits at 95% confidence level are 2330 GeV for the Z' in the Sequential Standard Model, 2000 GeV for the superstring-inspired Z'(psi) resonance, 890 (540) GeV for the Stueckelberg extension Z'(St) with the mass parameter epsilon = 0.06 (0.04), and 2140 (1810) GeV for Kaluza--Klein gravitons with the coupling parameter k/Mbar(Pl) of 0.10 (0.05). These limits are the most stringent to date. | |
| dc.description.version | Peer Reviewed | |
| dc.identifier | Phys.Lett. B714 (2012) 158-179; DOI 10.1016/j.physletb.2012.06.051 | |
| dc.identifier.uri | http://dx.doi.org/10.1016/j.physletb.2012.06.051 | |
| dc.identifier.uri | http://hdl.handle.net/10400.26/26195 | |
| dc.language.iso | eng | |
| dc.title | Search for narrow resonances in dilepton mass spectra in $pp$ collisions at $\sqrt{s}=7$ TeV | |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| rcaap.rights | openAccess | pt |
| rcaap.type | article |