Polarization in B->VV Decays

Details Polarization in B->VV Decays Polarization in B->VV Decays

2004-05-14

arxiv.org/abs/hep-ph/0405134v2

Phys.Lett. B601 (2004) 151-163

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages, 6 figures. added comment on cancelation of linear divergence, comment on new physics, 1 ref., an acknowledgement, co

Scientific paper

10.1016/j.physletb.2004.09.030

Factorizable amplitudes in B decays to light vector meson pairs give a longitudinal polarization satisfying 1- f_L =O(1/m_b^2). This remains formally true when non-factorizable graphs are included in QCD factorization, and is numerically realized in B->Rho Rho. In \Delta S=1 decays a QCD penguin annihilation graph can effectively contribute at leading power to the transverse and longitudinal amplitudes. The observed longitudinal polarization, f_L (B->phi K^*) \approx 50%, can therefore be accounted for in the SM. The ratio of perpendicular to parallel transverse rates provides a sensitive test for new right-handed currents. The transverse b->sg dipole operator amplitudes are highly suppressed. CP violation measurements can therefore discriminate between new contributions to the dipole and four quark operators. SU(3)_F violation in QCD penguin amplitudes can easily be O}(1), in general, due to annihilation. Implications for B->Rho K^* polarization and New Physics searches are pointed out.

Affiliated with

Also associated with

No associations

Rating

Polarization in B->VV Decays does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Polarization in B->VV Decays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polarization in B->VV Decays will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-671566