Observation of the Y (4140) structure in the J/ψϕ mass spectrum in B±→ J/ψϕK± decays
Name
1101.6058.pdf
Description
Submitted version
Size
191.46 KB
Format
Unknown
Checksum (MD5)
49720206f9c22af48262b12942582a43
Author(s)
CDF Collaboration
Bauer, Gerry P
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Makhoul, Khaldoun
Paus, Christoph M. E.
Date Issued
2017
Journal
Modern Physics Letters A [Particles and Fields; Gravitation; Cosmology and Nuclear Physics]
Publisher
World Scientific Pub Co Pte Lt
Version
Original manuscript
Abstract
© 2017 World Scientific Publishing Company. The observation of the Y (4140) structure in B± → J/ΨφK± decays produced in pp 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 resonancelike structure are consistent with values reported from an earlier CDF analysis.
MIT Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Massachusetts Institute of Technology. Department of Physics
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Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
https://doi.org/10.1142/S0217732317501395
