Observation of a Narrow Near-Threshold Structure in the $$J/\psi\phi$$ Mass Spectrum in $$B^+\to J/\psi\phi K^+$$ Decays
Conference
·
OSTI ID:992654
Observation is reported for a structure near the J/{psi}{phi} threshold in B{sup +} {yields} J/{psi}{phi}K{sup +} decays produced in {bar p}p collisions at {radical}s = 1.96 TeV with a statistical significance of beyond 5 standard deviations. There are 19 {+-} 6 events observed for this structure at a mass of 4143.4{sub -3.0}{sup +2.9}(stat) {+-} 0.6(syst) MeV/c{sup 2} and a width of 15.3{sub -6.1}{sup +10.4}(stat) {+-} 2.5(syst) MeV/c{sup 2}, which are consistent with the previous measurements reported as evidence of the Y(4140).
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 992654
- Report Number(s):
- FERMILAB-CONF-10-421-E; arXiv eprint number arXiv:1010.3470; TRN: US1007818
- Country of Publication:
- United States
- Language:
- English
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