Search for $B^{+} \to X(3872) K^{+}$, $X_{3872} \to J/\psi \gamma$

Aubert, Bernard; Barate, R.; Bona, M.; Boutigny, D.; Couderc, F.; Karyotakis, Y.; Lees, J.P.; Poireau, V.; Tisserand, V.; Zghiche, A.

doi:10.1103/PhysRevD.74.071101

Search for $B^{+} \to X(3872) K^{+}$ , $X_{3872} \to J/\psi \gamma$

BaBar

Collaboration

Jul, 2006

7 pages

Published in:

Phys.Rev.D 74 (2006) 071101

e-Print:

hep-ex/0607050 [hep-ex]

DOI:

10.1103/PhysRevD.74.071101

PDG:

{{\mathit \chi}_{{{c1}}}{(3872)}}

\rightarrow

{{\mathit \gamma}}{{\mathit J / \psi}}

Report number:

SLAC-PUB-11964,
BABAR-PUB-06-041

Experiments:

SLAC-PEP2-BABAR

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Abstract:

In a study of B+ --> J/psi gamma K+ decays, we find evidence for the radiative decay X(3872) --> J/psi gamma with a statistical significance of 3.4 sigma. We measure the product of branching fractions BF(B+ --> X(3872) K+).BF(X(3872) --> J/psi gamma) = (3.3 +/- 1.0 +/- 0.3) x 10^-6, where the uncertainties are statistical and systematic, respectively. We also measure the branching fraction BF(B+ --> chi_c1 K+) = (4.9 +/- 0.2 +/- 0.4) x 10^-4. These results are obtained from (287+/-3) million BBar decays collected at the Y(4S) resonance with the BaBar detector at the PEP-II B Factory at SLAC.

Note:

7 pages, 2 postscript figues, submitted to PRD-RC Report-no: BABAR-PUB-06/041, SLAC-PUB-11964

14.40.Gx
13.25.Gv
13.20.Gd
electron positron: colliding beams
electron positron: annihilation
Upsilon(10570): electroproduction
B: pair production
B+: hadronic decay
X(3872): radiative decay
J/psi(3100): leptonic decay

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Search for B+→X(3872)K+B^{+} \to X(3872) K^{+}B+→X(3872)K+, X3872→J/ψγX_{3872} \to J/\psi \gammaX3872​→J/ψγ

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Search for $B^{+} \to X(3872) K^{+}$ , $X_{3872} \to J/\psi \gamma$