Measurement of the branching fraction for B ---> eta-prime K and search for B ---> eta-prime pi+
Aug, 200114 pages
Published in:
- Phys.Lett.B 517 (2001) 309-318
e-Print:
- hep-ex/0108010 [hep-ex]
Report number:
- KEK-PREPRINT-2001-63,
- BELLE-PREPRINT-2001-11
Experiments:
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Abstract: (Elsevier)
We report measurements for two-body charmless hadronic B decays with an η ′ meson in the final state. Using 11.1×10 6 B B ̄ pairs collected with the Belle detector, we find BF ( B + → η ′ K + )=(79 +12 −11 ±9)×10 −6 and BF ( B 0 → η ′ K 0 )=(55 +19 −16 ±8)×10 −6 , where the first and second errors are statistical and systematic, respectively. No signal is observed in the mode B + → η ′ π + , and we set a 90% confidence level upper limit of BF ( B + → η ′ π + )<7×10 −6 . The CP asymmetry in B ± → η ′ K ± decays is investigated and a limit at 90% confidence level of −0.20< A CP <0.32 is obtained.Note:
- Submitted to Physics Letters B Report-no: KEK Preprint 2001-63, Belle Preprint 2001-11
- 13.25.Hw
- 14.40.Nd
- electron positron: colliding beams
- electron positron: annihilation
- Upsilon(10570): electroproduction
- B: pair production
- B: hadronic decay
- final state: (0charm)
- eta(958)
- B: branching ratio
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