Search for a charged partner of the $X (3872)$ in the $B$ meson decay $B \to X^{-} K$ , $X^{-} \to J / ψ π^{-} π^{0}$

Authors:

BAB. Aubert
B. Aubert
RBR. Barate
R. Barate
DBD. Boutigny
D. Boutigny
FCF. Couderc
F. Couderc
YKY. Karyotakis
Y. Karyotakis
JLJ. P. Lees
J. P. Lees
VPV. Poireau
V. Poireau
VTV. Tisserand
V. Tisserand
AZA. Zghiche
A. Zghiche
EGE. Grauges-Pous
E. Grauges-Pous
APA. Palano
A. Palano
APA. Pompili
A. Pompili

Publisher website

11 February 2005

journal article
research article
Published by American Physical Society (APS) in Physical Review D

Vol. 71 (3) , 031501
DOI:10.1103/physrevd.71.031501

Abstract

We search for a charged partner of the

X (3872)

in the decay

B \to X^{-} K

,

X^{-} \to J / ψ π^{-} π^{0}

, using

234 \times 10^{6}

B \bar{B}

events collected at the

Υ (4 S)

resonance with the BABAR detector at the PEP-II

e^{+} e^{-}

asymmetric-energy storage ring. The resulting product branching fraction upper limits are

B (B^{0} \to X^{-} K^{+}, X^{-} \to J / ψ π^{-} π^{0}) < 5.4 \times 10^{- 6}

and

B (B^{-} \to X^{-} {\bar{K}}^{0}, X^{-} \to J / ψ π^{-} π^{0}) < 22 \times 10^{- 6}

at the

90 %

confidence level.

Keywords

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Version 1, 2004-12-18, ArXiv

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