Measurement of the decays $B^0_s → J/ψϕ(1020), B^0_s → J/ψf_2′(1525)$ and $B^0_s → J/ψK^+K^-$ at Belle - INSPIRE

DataBETA

Measurement of the decays $B^0_s → J/ψϕ(1020), B^0_s → J/ψf_2′(1525)$ and $B^0_s → J/ψK^+K^-$ at Belle

Belle

Collaboration

Sep 3, 2013

8 pages

Published in:

Phys.Rev.D 88 (2013) 11, 114006

Published: Dec 2, 2013

e-Print:

1309.0704 [hep-ex]

DOI:

10.1103/PhysRevD.88.114006

PDG:

{{\mathit B}_{{{s}}}^{0}}

\rightarrow

{{\mathit J / \psi}{(1S)}}{{\mathit f}_{{{2}}}^{\,'}{(1525)}}

Report number:

BELLE-PREPRINT-\#-2013-21,
KEK-PREPRINT-\#-2013-32,
BELLE-PREPRINT-2013-21,
KEK-PREPRINT-2013-32

Experiments:

KEK-BF-BELLE

View in:

ADS Abstract Service

reference search16 citations

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Abstract: (APS)

We report a measurement of the branching fraction of the decay Bs0→J/ψϕ(1020), evidence and a branching fraction measurement for Bs0→J/ψf2′(1525), and the determination of the total Bs0→J/ψK+K- branching fraction, including the resonant and nonresonant contributions to the K+K- channel. We also determine the S-wave contribution within the ϕ(1020) mass region. The absolute branching fractions are B[Bs0→J/ψϕ(1020)]=(1.25±0.07(stat)±0.08(syst)±0.22(fs))×10-3, B[Bs0→J/ψf2′(1525)]=(0.26±0.06(stat)±0.02(syst)±0.05(fs))×10-3, and B[Bs0→J/ψK+K-]=(1.01±0.09(stat)±0.10(syst)±0.18(fs))×10-3, where the last systematic error is due to the branching fraction of bb¯→Bs(*)Bs(*). The branching fraction ratio is found to be B[Bs0→J/ψf2′(1525)]/B[Bs0→J/ψϕ(1020)]=(21.5±4.9(stat)±2.6(syst))%. All results are based on a 121.4 fb-1 data sample collected at the Υ(5S) resonance by the Belle experiment at the KEKB asymmetric-energy e+e- collider.

Note:

7 pages, 6 figures, 4 tables, accepted by Phys. Rev. D

14.40.Nd
13.25.Hw
BELLE
KEK-B
electron positron: annihilation
B/s0: pair production
B/s0: hadronic decay
B/s0: branching ratio: measured
partial wave
experimental results

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