Evidence for B{yields}{eta}{sup '}{pi} and Improved Measurements for B{yields}{eta}{sup '}K
- National United University, Miao Li (China)
- High Energy Accelerator Research Organization (KEK), Tsukuba (Japan)
We report evidence for the exclusive two-body charmless hadronic B meson decay B{yields}{eta}{sup '}{pi}, and improved measurements of B{yields}{eta}{sup '}K. The results are obtained from a data sample of 386x10{sup 6} BB pairs collected at the {upsilon}(4S) resonance, with the Belle detector at the KEKB asymmetric-energy e{sup +}e{sup -} collider. We measure B(B{sup +}{yields}{eta}{sup '}{pi}{sup +})=[1.76{sub -0.62}{sup +0.67}(stat){sub -0.14}{sup +0.15}(syst)]x10{sup -6} and B(B{sup 0}{yields}{eta}{sup '}{pi}{sup 0})[2.79{sub -0.96}{sup +1.02}(stat){sub -0.34}{sup +0.25}(syst)]x10{sup -6}. We also find the ratio of (B(B{sup +}{yields}{eta}{sup '}K{sup +})/B(B{sup 0}{yields}{eta}{sup '}K{sup 0}))=1.17{+-}0.08(stat){+-}0.03(syst) and measure the direct CP asymmetries for the charged modes.
- OSTI ID:
- 20860631
- Journal Information:
- Physical Review Letters, Vol. 97, Issue 6; Other Information: DOI: 10.1103/PhysRevLett.97.061802; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
Similar Records
Measurement of the B{sup 0}{yields}{pi}{sup -}l{sup +}{nu} and B{sup +}{yields}{eta}(')l{sup +}{nu} branching fractions, the B{sup 0}{yields}{pi}{sup -}l{sup +}{nu} and B{sup +}{yields}{eta}l{sup +}{nu} form-factor shapes, and determination of |V{sub ub}|
Observation of B{sup 0}{yields}D{sup 0}{eta}{sup '} and B{sup 0}{yields}D*{sup 0}{eta}{sup '}