The factorizable amplitude in $B^0 \to π^+ π^-$

Details The factorizable amplitude in $B^0 \to π^+ π^-$ The factorizable amplitude in $B^0 \to π^+ π^-$

2003-05-23

arxiv.org/abs/hep-ph/0305262v1

Phys.Rev. D68 (2003) 074010

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, LaTeX, 3 figures, to be submitted to Phys. Rev. D

Scientific paper

10.1103/PhysRevD.68.074010

Using the measured spectrum shape for $B \to \pi \ell \nu$, the rate for $B^+ \to \pi^+ \pi^0$, information on the Cabibbo-Kobayashi-Maskawa (CKM) matrix element $|V_{ub}|$, and theoretical inputs from factorization and lattice gauge theory, we obtain an improved estimate of the ``tree'' contribution to $B^0 \to \pi^+ \pi^-$. We find the branching ratio $\b(B^0 \to \pi^+ \pi^-)|_{\rm tree} = (5.25^{+1.67}_{-0.50}) \times 10^{-6}$, to be compared with the experimental value $\b(B^0 \to \pi^+ \pi^-) = (4.55 \pm 0.44) \times 10^{-6}$. The fit implies $|V_{ub}| = (3.62 \pm 0.34) \times 10^{-3}$. Implications for tree-penguin interference in $B^0 \to \pi^+ \pi^-$ and for other charmless $B$ decays are discussed.

Affiliated with

Also associated with

No associations

Rating

The factorizable amplitude in $B^0 \to π^+ π^-$ 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 The factorizable amplitude in $B^0 \to π^+ π^-$, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The factorizable amplitude in $B^0 \to π^+ π^-$ will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-133495