B- -> pi- pi0/rho- rho0 to NNLO in QCD factorization

Details B- -> pi- pi0/rho- rho0 to NNLO in QCD factorization B- -> pi- pi0/rho- rho0 to NNLO in QCD factorization

2009-07-06

arxiv.org/abs/0907.1016v1

Phys.Rev.D80:054024,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages

Scientific paper

10.1103/PhysRevD.80.054024

The approximate tree decays B- -> pi- pi0/rho- rho0 may serve as benchmark channels for testing the various theoretical descriptions of the strong interaction dynamics in hadronic B meson decays. The ratios of hadronic and differential semileptonic B -> pi l nu/rho l nu decay rates at maximum recoil provide particularly clean probes of the QCD dynamics. We confront the recent NNLO calculation in the QCD factorization framework with experimental data and find support for the factorization assumption. A detailed analysis of all tree-dominated B -> pi pi/pi rho/rho rho decay modes seems to favour somewhat enhanced colour-suppressed amplitudes, which may be accommodated in QCD factorization by a small value of the first inverse moment of the B meson light-cone distribution amplitude, lambda_B ~ 250 MeV. Precise measurements of the B -> rho l nu spectrum could help to clarify this point.

Affiliated with

Also associated with

No associations

Rating

B- -> pi- pi0/rho- rho0 to NNLO in QCD factorization 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 B- -> pi- pi0/rho- rho0 to NNLO in QCD factorization, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and B- -> pi- pi0/rho- rho0 to NNLO in QCD factorization will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-28000