Final State Interactions and New Physics in B -> pi K Decays

Physics – High Energy Physics – High Energy Physics - Phenomenology

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

20 pages, RevTex, no figures; a few typos corrected, references added, brief additional discussion of uncertanties is added

Scientific paper

10.1103/PhysRevD.57.4290

Within the Standard Model, and if one assumes that soft rescattering effects are negligible, the CP asymmetry A^dir_CP (B^\pm -> \pi^\pm K) is predicted to be very small and the ratio R = BR(B_d -> \pi^\mp K^\pm)/BR(B^\pm -> \pi^\pm K) provides a bound on the angle \gamma of the unitarity triangle, sin^2 \gamma \leq R. We estimate the corrections from soft rescattering effects using an approach based on Regge phenomenology, and find effects of order 10% with large uncertainties. In particular, we conclude that A^dir_CP \sim 0.2 and sin^2 \gamma \sim 1.2 R could not be taken unambiguously to signal New Physics. Using SU(3) relations, we suggest experimental tests that could constrain the size of the soft rescattering effects thus reducing the related uncertainty. Finally, we study the effect of various models of New Physics on A^dir_CP and on R.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Final State Interactions and New Physics in B -> pi K 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 Final State Interactions and New Physics in B -> pi K Decays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Final State Interactions and New Physics in B -> pi K Decays will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-198218

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.