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Role of Electromagnetic Dipole Operator in the Electroweak Penguin Dominated Vector Meson Decays of B Meson |
| Lü Cai-Dian;SHEN Yue-Long;WANG Wei |
| Institute of High Energy Physics, Chinese Academy of Sciences, PO Box 918(4), Beijing 100049 (mailing address) |
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| Cite this article: |
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Lü Cai-Dian, SHEN Yue-Long, WANG Wei 2006 Chin. Phys. Lett. 23 2684-2687 |
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Abstract The pure annihilation type decays B0d→phiγ and Bs→ργ receive only colour suppressed penguin contributions with a very small branching ratio in the standard model. When we include the previously neglected electromagnetic dipole operator, the branching ratios can be enhanced to R( B0d→Фγ)\simeq 1×10-11 and R(Bs→ργ) ～ (6-16)×10-10, which are one order magnitude larger than previous study using the QCD factorization approach. The new effect can also give a large contribution, of order 10-9, to transverse polarization of B→Фρ and B→ωФ, which is comparable to the longitudinal part. These effects can be detected in the LHCb experiment and the super-B factories.
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| Keywords:
13.25.Hw
14.40.Nd
14.64.Fy
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Published: 01 October 2006
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