Please use this identifier to cite or link to this item:
Title: An estimate of the B --> K* γ Decay Form Factor
Authors: Becirevic, Damir
Lubicz, Vittorio
Mescia, Federico
Keywords: Lattice QCD
Weak decays
Issue Date: Apr-2007
Publisher: Eklsevier
Abstract: We present the results of a lattice QCD calculation of the form factor relevant to B→K*γ decay. Our final value, T(0) = 0.24 +/- 0.03 (+0.04/-0.01), is obtained in the quenched approximation, and by extrapolating T(q2=0;H--> K*)MH^(3/2) from the directly accessed H-heavy mesons to the meson B. We also show that the extrapolation from B→K*γ* (q2≠0) to B→K*γ (q2=0), leads to a result consistent with the one quoted above. On the other hand, our results are not accurate enough to solve the SU(3) flavor breaking effects in the form factor and we quote TB→K*(0)/TB→ρ(0)=1.2(1), as our best estimate.
DOI: 10.1016/j.nuclphysb.2007.01.032
Appears in Collections:A - Articolo su rivista
X_Dipartimento di Fisica 'Edoardo Amaldi'

Files in This Item:
File Description SizeFormat Existing users please Login
54_npb769(2007)031.pdf405.53 kBAdobe PDF    Request a copy
Show full item record Recommend this item

Page view(s)

Last Week
Last month
checked on Sep 30, 2023


checked on Sep 30, 2023

Google ScholarTM




Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.