ar X iv : h ep - p h / 02 10 16 0 v 2 2 3 O ct 2 00 2 Study of the Flavour Changing Neutral Current Decay mode B → Kγγ

ar X iv : h ep - p h / 02 10 16 0 v 3 2 3 Fe b 20 05 Study of the Flavour Changing Neutral Current Decay mode B → Kγγ

We study the neutral current flavour changing rare decay mode B → Kγγ within the framework of Standard Model, including the long distance contributions. It is found that these long distance contributions can be larger than the short distance contribution. —————————————————————————————————— We have corrected a sign error in one of the terms contributing to the Irre-ducible (short-distance) contr...

O ct 2 00 2 Study of the Flavour Changing Neutral Current Decay mode B → Kγγ

We study the neutral current flavour changing rare decay mode B → Kγγ within the framework of Standard Model, including the long distance contributions. It is found that these long distance contributions can be of the same order as the short distance contribution.

ar X iv : h ep - p h / 02 11 25 5 v 1 1 6 N ov 2 00 2 B → X s + missing energy in models with large extra dimensions

We study the neutral current flavour changing rare decay mode B → Xs+ missing energy within the framework of theories with large extra spatial dimensions. The corresponding Standard Model signature is B → Xs + νν̄. But in theories with large extra dimensions, it is possible to have scalars and gravitons in the final state making it quite distinct from any other scenario where there are no gravit...

ar X iv : h ep - p h / 02 05 01 6 v 2 3 0 O ct 2 00 2 Scalar a 0 ( 980 ) meson in φ → π 0 ηγ decay

ar X iv : h ep - p h / 02 10 35 3 v 1 2 5 O ct 2 00 2 Nonfactorizable effects in B → J / ψK

The method of QCD light-cone sum rules is used to calculate soft nonfactorizable contributions to the decay amplitude for B → J/ψK. The result confirms expectations that in color-suppressed decays nonfactorizable corrections can be sizable.