B{yields}{eta}{sup (')}(l{sup -}{nu}{sub l},l{sup +}l{sup -},K,K*) decays in the quark-flavor mixing scheme
- Department of Physics, National Cheng-Kung University, Tainan 701, Taiwan (China)
- Department of Physics, National Tsing-Hua University, Hsinchu 300, Taiwan (China)
In the quark-flavor mixing scheme, {eta} and {eta}{sup '} are linear combinations of flavor states {eta}{sub q}=(uu+dd)/{radical}(2) and {eta}{sub s}=ss with the masses of m{sub qq} and m{sub ss}, respectively. Phenomenologically, m{sub ss} is strictly fixed to be around 0.69, which is close to {radical}(2m{sub K}{sup 2}-m{sub {pi}}{sup 2}) by the approximate flavor symmetry, while m{sub qq} is found to be 0.18{+-}0.08 GeV. For a large allowed value of m{sub qq}, we show that the branching ratios (BRs) for B{yields}{eta}{sup (')}X decays with X=(l{sup -}{nu}{sub l},l{sup +}l{sup -}) are enhanced. We also illustrate that BR(B{yields}{eta}X)>BR(B{yields}{eta}{sup '}X) in the mechanism without the flavor-singlet contribution. Moreover, we demonstrate that the decay branching ratios for B{yields}{eta}{sup (')}K{sup [*]} are consistent with the data. In particular, the puzzle of the large BR(B{yields}{eta}{sup '}K) can be solved. In addition, we find that the CP asymmetry for B{sup {+-}}{yields}{eta}K{sup {+-}} can be as large as -30%, which agrees well with the data. However, we cannot accommodate the CP asymmetries of B{yields}{eta}K* in our analysis, which could indicate the existence of some new CP violating sources.
- OSTI ID:
- 21020050
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 75, Issue 5; Other Information: DOI: 10.1103/PhysRevD.75.054003; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
Similar Records
Study of scalar meson f{sub 0}(980) and K{sub 0}{sup *}(1430) from B{yields}f{sub 0}(980){rho}({omega},{phi}) and B{yields}K{sub 0}{sup *}(1430){rho}({omega}) decays
Measurements of branching fractions, rate asymmetries, and angular distributions in the rare decays B{yields}Kl{sup +}l{sup -} and B{yields}K*l{sup +}l{sup -}