Bounding heavy meson form-factors using inclusive sum rules
Jul, 199616 pages
Published in:
- Phys.Lett.B 395 (1997) 96-106
e-Print:
- hep-ph/9607418 [hep-ph]
Report number:
- UCSD-TH-96-20
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Abstract:
We utilize inclusive sum rules to construct both upper and lower bounds on the form factors for B to D, D*, rho, pi, omega, K and K* semi-leptonic and radiative decays. We include the leading nonperturbative 1/E corrections and point out cases when alpha_s corrections are equally important. We compute the alpha_s correction to the lower bound on the B to D* form factor f(w) at zero recoil, thereby constraining its normalization f(1) to within 6-8% of the upper bound. We show that the B to rho form factor a_+ is suppressed at small momentum transfer by either a factor of 1/E or alpha_s. These bounds can be used to rule out phenomenological models as well as to determine values for the CKM matrix elements once radiative corrections are included.- anti-B: semileptonic decay
- form factor
- D
- D*(2010)
- rho(770)
- omega(783)
- pi
- K
- K*(892)
- anti-B: radiative decay
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