Uncertainty in the leading order PQCD calculations of $B$ meson decays

Details Uncertainty in the leading order PQCD calculations of $B$ meson decays Uncertainty in the leading order PQCD calculations of $B$ meson decays

2006-05-10

arxiv.org/abs/hep-ph/0605112v2

Phys.Rev.D74:014027,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

21pages, 13 figures; more discussions on RGE scale dependence and 1/M effects are added; typos are corrected

Scientific paper

10.1103/PhysRevD.74.014027

Uncertainty in the PQCD calculation of B decays is investigated in $B\to \pi$, $B\to D$ transition form factors and $B\to D\pi$ decay amplitudes. $B$ meson distributionamplitude dependence is studied by taking three kinds of distribution amplitude so far suggested. It is found that almost same $q^2$ dependence of the form factors can be obtained irrespective of the types of the $B$ meson distribution amplitude by suitably choosing one parameter. $B\to D\pi$ process shows the difference due to the distribution amplitude. The effect of the sub-leading component of the $B$ mesondistribution amplitude is also studied in the three processes. The numerical results of calculations with the sub-leading component can be well approximated by the leading order calculation with a suitable choice of the distribution amplitude parameters.

Affiliated with

Also associated with

No associations

Rating

Uncertainty in the leading order PQCD calculations of $B$ meson 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 Uncertainty in the leading order PQCD calculations of $B$ meson decays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Uncertainty in the leading order PQCD calculations of $B$ meson decays will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-705842