Penguin operators in nonresonant B{sup {minus}}{r_arrow}M{bar M}{pi}{sup {minus}}(M={pi}{sup {minus}},K{sup {minus}},K{sup 0}) decays
- J. Stefan Institute, Jamova 39, P.O. Box 3000, 1001 Ljubljana (Slovenia)
- Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208 (United States)
- Centre de Physique Theorique, Centre National de la Recherche Scientifique, UMR 7644, Ecole Polytechnique, F-91128 Palaiseau Cedex (France)
We investigate the contributions coming from the penguin operators in the nonresonant B{sup {minus}}{r_arrow}M{bar M}{pi}{sup {minus}}(M={pi}{sup {minus}},K{sup {minus}},K{sup 0}) decays. The effective Wilson coefficients of the strong penguin operators O{sub 4} and O{sub 6} are found to be relatively larger than those for other penguin operators. We calculate the contributions arising from the O{sub 4} and O{sub 6} operators in the nonresonant decays B{sup {minus}}{r_arrow}M{bar M}{pi}{sup {minus}}(M={pi}{sup {minus}},K{sup {minus}},{bar K}{sup 0}) using a model combining heavy quark symmetry and the chiral symmetry, developed previously. We find that the CKM-forbidden nonresonant B{sup {minus}}{r_arrow}K{sup 0}{bar K}{sup 0}{pi}{sup {minus}} decay occurs through the strong penguin operators. These penguin contributions affect the branching ratios for B{sup {minus}}{r_arrow}M{bar M}{pi}{sup {minus}}(M={pi}{sup {minus}},K{sup {minus}}) by only a few percent. The branching ratio for B{sup {minus}}{r_arrow}K{sup 0}{bar K}{sup 0}{pi}{sup {minus}} is estimated to be of the order 10{sup {minus}6}. {copyright} {ital 1999} {ital The American Physical Society}
- OSTI ID:
- 365989
- Journal Information:
- Physical Review, D, Vol. 60, Issue 5; Other Information: PBD: Sep 1999
- Country of Publication:
- United States
- Language:
- English
Similar Records
Nonresonant Cabibbo suppressed decay {ital B}{sup {plus_minus}}{r_arrow}{pi}{sup +}{pi}{sup {minus}}{pi}{sup {plus_minus}} and signal for {ital CP} violation
Electroweak and strong penguin diagrams in {ital B}{sup {plus_minus},0}{r_arrow}{pi}{pi}, {pi}{ital K}, and {ital K{bar K}} decays