$\bar B^0 \to π^+ X$ in the Standard Model

Details $\bar B^0 \to π^+ X$ in the Standard Model $\bar B^0 \to π^+ X$ in the Standard Model

2002-06-06

arxiv.org/abs/hep-ph/0206061v2

Phys.Rev.D66:097501,2002

Physics

High Energy Physics

High Energy Physics - Phenomenology

RevTex 8 pages and two figures

Scientific paper

10.1103/PhysRevD.66.097501

In this paper we investigate the possibility of studying $B\to \pi$ form factor using the semi-inclusive decays $\bar B^0 \to \pi^+ + X_q$. In general $B\to PX$ semi-inclusive decays involve several hadronic parameters. But for $\bar B^0 \to \pi^+ X_q$ decays we find that in the factorization approximation, the only unknown hadronic parameters are the form factors $F^{B\to \pi}_{0,1}$. Therefore these form factors can be studied in $\bar B^0 \to \pi^+ X_q$ decays. Using theoretical model calculations for the form factors the branching ratios for $\bar B^0 \to \pi^+ X_d(\Delta S = 0) $ and $\bar B^0 \to \pi^+ X_s (\Delta S = -1)$, with the cut $E_{\pi} > 2.1$ GeV, are estimated to be in the ranges of $(3.1\sim 4.9) \times 10^{-5}(F^{B\to \pi}_1(0)/0.33)^2$ and $(2.5\sim 4.2)\times 10^{-5}(F_1^{B\to \pi}(0)/0.33)^2$, respectively, depending on the value of $\gamma$. The combined branching ratio for $\bar B^0 \to \pi^+ (X_d+ X_s)$ is about $7.4\times 10^{-5} (F^{B\to \pi}_1(0)/0.33)^2$ and is insensitive to $\gamma$. We also discuss CP asymmetries in these decay modes.

Affiliated with

Also associated with

No associations

Rating

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

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-435733