TY - JOUR
T1 - B meson distribution amplitude from B → γlv
AU - Beneke, M.
AU - Rohrwild, J.
N1 - Publisher Copyright:
© Springer-Verlag/Società Italiana di Fisica 2011.
PY - 2011
Y1 - 2011
N2 - We reconsider the utility of the radiative decay B -> yℓv with an energetic photon in the final state for determining parameters of the B -meson light-cone distribution amplitude. Including 1/mi, power corrections and radiative corrections at next-to-leading logarithmic order, we perform an improved analysis of the existing BABAR data. We find a provisional lower limit on the inverse moment of the B meson distribution amplitude, Xb, which, due to the inclusion of radiative and power corrections, is significantly lower than the previous result. More data with large photon energy are, however, required to obtain reliable results, as should become available in the future from SuperB factories.
AB - We reconsider the utility of the radiative decay B -> yℓv with an energetic photon in the final state for determining parameters of the B -meson light-cone distribution amplitude. Including 1/mi, power corrections and radiative corrections at next-to-leading logarithmic order, we perform an improved analysis of the existing BABAR data. We find a provisional lower limit on the inverse moment of the B meson distribution amplitude, Xb, which, due to the inclusion of radiative and power corrections, is significantly lower than the previous result. More data with large photon energy are, however, required to obtain reliable results, as should become available in the future from SuperB factories.
UR - http://www.scopus.com/inward/record.url?scp=84924062279&partnerID=8YFLogxK
U2 - 10.1140/epjc/s10052-011-1818-8
DO - 10.1140/epjc/s10052-011-1818-8
M3 - Article
AN - SCOPUS:84924062279
SN - 1434-6044
VL - 71
JO - European Physical Journal C
JF - European Physical Journal C
IS - 12
M1 - 1818
ER -