Aaltonen, T;
Alvarez Gonzalez, B;
Amerio, S;
Amidei, D;
Anastassov, A;
Annovi, A;
Antos, J;
... Zucchelli, S; + view all
(2017)
Observation of the Y (4140) structure in the J/psi phi mass spectrum in B-+/- -> J/psi phi K-+/- decays.
Modern Physics Letters A
, 32
(26)
10.1142/S0217732317501395.
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Abstract
The observation of the Y(4140) structure in B±→J/ψϕK± decays produced in p̄ p collisions at s√=1.96 TeV is reported with a statistical significance greater than 5 standard deviations. A fit to the J/ψϕ mass spectrum is performed assuming the presence of a Breit–Wigner resonance. The fit yields a signal of 19±6(stat)±3(syst) resonance events, and resonance mass and width of 4143.4+2.9−3.0(stat)±0.6(syst)MeV/c2 and 15.3+10.4−6.1(stat)±2.5(syst)MeV/c2, respectively. The parameters of this resonance-like structure are consistent with values reported from an earlier CDF analysis.
| Type: | Article |
|---|---|
| Title: | Observation of the Y (4140) structure in the J/psi phi mass spectrum in B-+/- -> J/psi phi K-+/- decays |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1142/S0217732317501395 |
| Publisher version: | https://doi.org/10.1142/S0217732317501395 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10062057 |
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