Publication
Observation of a peaking structure in the $J/\psi \phi$ mass spectrum from $B^{\pm} \to J/\psi \phi K^{\pm}$ decays
| dc.contributor.author | CMS collaboration (2210 authors) | |
| dc.contributor.author | Hollar, Jonathan | |
| dc.contributor.author | Nayak, Aruna | |
| dc.contributor.author | Calpas, Betty | |
| 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 | Ferreira Parracho, Pedro Guilherme | |
| dc.contributor.author | Gallinaro, Michele | |
| dc.contributor.author | Rodrigues Antunes, Joao | |
| 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 | Silva, Pedro | |
| dc.contributor.author | Pela, Joao | |
| dc.contributor.author | Leonardo, Nuno | |
| dc.date.accessioned | 2019-02-03T23:28:57Z | |
| dc.date.available | 2019-02-03T23:28:57Z | |
| dc.date.issued | 2014-06-27 | |
| dc.date.updated | 2019-02-03T23:28:57Z | |
| dc.description.abstract | A peaking structure in the J/psi phi mass spectrum near threshold is observed in B(+/-) to J/psi phi K(+/-) decays, produced in pp collisions at sqrt(s) = 7 TeV collected with the CMS detector at the LHC. The data sample, selected on the basis of the dimuon decay mode of the J/psi, corresponds to an integrated luminosity of 5.2 inverse femtobarns. Fitting the structure to an S-wave relativistic Breit-Wigner lineshape above a three-body phase-space nonresonant component gives a signal statistical significance exceeding five standard deviations. The fitted mass and width values are m = 4148.0 +- 2.4 (stat.) +- 6.3 (syst.) MeV and Gamma = 28 +15 -11 (stat.) +- 19 (syst.) MeV, respectively. Evidence for an additional peaking structure at higher J/psi phi mass is also reported. | |
| dc.description.version | Peer Reviewed | |
| dc.identifier | Phys.Lett. B734 (2014) 261-281; DOI 10.1016/j.physletb.2014.05.055 | |
| dc.identifier.uri | http://dx.doi.org/10.1016/j.physletb.2014.05.055 | |
| dc.identifier.uri | http://hdl.handle.net/10400.26/26477 | |
| dc.language.iso | eng | |
| dc.title | Observation of a peaking structure in the $J/\psi \phi$ mass spectrum from $B^{\pm} \to J/\psi \phi K^{\pm}$ decays | |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| rcaap.rights | openAccess | pt |
| rcaap.type | article |