Isospin-breaking effects on alpha extracted in B --> pi pi, rho rho, rho pi

Details Isospin-breaking effects on alpha extracted in B --> pi pi, rho rho, rho pi Isospin-breaking effects on alpha extracted in B --> pi pi, rho rho, rho pi

2005-02-15

arxiv.org/abs/hep-ph/0502139v4

Phys.Rev. D71 (2005) 074017

Physics

High Energy Physics

High Energy Physics - Phenomenology

21 pages, very slight changes, same version as in Physical Review D

Scientific paper

10.1103/PhysRevD.71.074017

Isospin-breaking in B --> pi pi caused by pi^0-eta-eta' mixing is studied in a model-independent way using flavor SU(3). Measured branching ratios for B^+ --> pi^+ pi^0, B^+ --> pi^+ eta^(') and B^0 --> pi^0 eta^(') imply an uncertainty in alpha smaller than 1.4 degree. We find a negligible effect of pi^0-eta-eta' mixing on alpha in B --> rho pi. Characterizing the effect of rho^0-omega mixing in B --> rho rho and in B --> rho pi by the two-pion invariant mass dependence, we point out a way of constraining this effect experimentally or eliminating it altogether. We show that a model-independent shift in alpha caused by electroweak penguin amplitudes in B --> pi pi and B --> rho rho, \Delta alpha_{EWP}=1.5+- 0.3 degree, may be slightly different in B --> rho pi. Other sources of isospin-breaking in these processes are briefly discussed.

Affiliated with

Also associated with

No associations

Rating

Isospin-breaking effects on alpha extracted in B --> pi pi, rho rho, rho pi 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 Isospin-breaking effects on alpha extracted in B --> pi pi, rho rho, rho pi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Isospin-breaking effects on alpha extracted in B --> pi pi, rho rho, rho pi will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-242719