ar X iv : h ep - p h / 05 01 26 9 v 2 1 4 M ay 2 00 5 B 0 → φφ Decay in Perturbative QCD Approach

ar X iv : h ep - p h / 05 01 26 9 v 1 2 8 Ja n 20 05 B 0 → φφ Decay in Perturbative QCD Approach

The rare decay B0 → φφ can occur only via penguin annihilation topology in the standard model. We calculate this channel in the perturbative QCD approach. The predicted branching ratio is very small at (10−8). We also give the polarization fractions, which shows that the transverse polarization contribution is comparable to the longitudinal one, due to a big transverse contribution from factori...

ar X iv : h ep - p h / 02 05 01 6 v 1 2 M ay 2 00 2 Scalar a 0 ( 980 ) meson in φ → π 0 ηγ decay

ar X iv : h ep - p h / 98 05 39 4 v 1 2 0 M ay 1 99 8 Odderon and QCD

A review is made of the odderon idea in high-energy physics, complemented by an outline of the recent calculations of the odderon properties in the perturbative QCD.

ar X iv : h ep - p h / 01 05 24 0 v 1 2 3 M ay 2 00 1 Quarkonium Spectroscopy and Perturbative QCD : A New Perspective ∗

We report new aspects of the recent theoretical progress in heavy quarkonium physics. (1) Contrary to wide beliefs, the gross structure of the bottomonium spectrum is described well by the non-relativistic boundstate theory based on perturbative QCD. (2) This leads to a new physical picture of the bottomonium states: the boundstate mass is composed mainly of the self-energies of b and ¯ b accum...

ar X iv : h ep - p h / 01 10 31 9 v 1 2 4 O ct 2 00 1 Bottom Quark Fragmentation in Top Quark Decay

We study the fragmentation of the b quark in top decay in NLO QCD, within the framework of perturbative fragmentation, which allows one to resum large logarithms ∼ log(m 2 t /m 2 b). We show the b-energy distribution, which we compare with the exact O(α S) result for a massive b quark. We use data from e + e − machines in order to describe the b-quark hadronization and make predictions for the ...