Measurement of branching fraction and search for violation in
Jan 19, 20219 pages
Published in:
- Phys.Rev.D 103 (2021) 5, 052013
- Published: Mar 30, 2021
e-Print:
- 2101.07753 [hep-ex]
Report number:
- Belle Preprint 2020-20,
- KEK Preprint 2020-37
Experiments:
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Abstract: (APS)
We report the measurement of branching fractions and CP-violation asymmetries in B→ϕϕK decays based on a 711 fb-1 data sample containing 772×106 BB¯ events. The data were recorded at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. For B+→ϕϕK+, the branching fraction and CP-violation asymmetry measured below the ηc threshold (mϕϕ<2.85 GeV/c2) are [3.43-0.46+0.48(stat)±0.22(syst)]×10-6 and -0.02±0.11(stat)±0.01(syst), respectively. Similarly, the branching fraction obtained for B0→ϕϕK0 below the ηc threshold is [3.02-0.66+0.75(stat)±0.20(syst)]×10-6. We also measure the CP-violation asymmetry for B+→ϕϕK+ within the ηc region (mϕϕ∈[2.94,3.02] GeV/c2) to be +0.12±0.12(stat)±0.01(syst).Note:
- 8 pages, 6 figures, 4 tables, submitted to Phys. Rev. D
- Particle Physics Experiments
- electron positron: annihilation
- electron positron: colliding beams
- B: pair production
- B: hadronic decay
- Phi(1020): pair production
- decay: asymmetry: measured
- branching ratio
- Upsilon(10570): electroproduction
- CP: violation
References(23)
Figures(11)
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