Evidence for a Narrow Near-Threshold Structure in the $J/\psi\phi$ Mass Spectrum in $B^+\to J/\psi\phi K^+$ Decays - INSPIRE

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Evidence for a Narrow Near-Threshold Structure in the $J/\psi\phi$ Mass Spectrum in $B^+\to J/\psi\phi K^+$ Decays

CDF

Collaboration

Mar, 2009

7 pages

Published in:

Phys.Rev.Lett. 102 (2009) 242002

e-Print:

0903.2229 [hep-ex]

DOI:

10.1103/PhysRevLett.102.242002

PDG:

{{\mathit \chi}_{{{c1}}}{(4140)}}

\rightarrow

{{\mathit J / \psi}}{{\mathit \phi}}

Report number:

FERMILAB-PUB-09-064-E

Experiments:

FNAL-E-0830

View in:

reference search444 citations

Citations per year

Abstract: (arXiv)

Evidence is reported for a narrow structure near the

J/\psi\phi

threshold in exclusive

B^+\to J/\psi\phi K^+

decays produced in

\bar{p} p

collisions at \sqrt{s}=1.96 \TeV. A signal of

14\pm5

events, with statistical significance in excess of 3.8 standard deviations, is observed in a data sample corresponding to an integrated luminosity of 2.7 \ifb, collected by the CDF II detector. The mass and natural width of the structure are measured to be 4143.0\pm2.9(\mathrm{stat})\pm1.2(\mathrm{syst}) \MeVcc and 11.7^{+8.3}_{-5.0}(\mathrm{stat})\pm3.7(\mathrm{syst}) \MeVcc.

Note:

7 pages, 2 figures, submitted to Phys. Rev. Lett

14.40.Gx
12.39.Mk
13.25.Gv
OSG : CDF
anti-p p: interaction
B+: hadronic decay
mass spectrum: (J/psi(3100) Phi(1020))
Dalitz plot
Y(4140)
mass: width

References(41)

Figures(2)

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