Naslov
B -> pi and B(s) -> K form factors and Vub determination

Autori
Melić, Blaženka

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceeding of the 34th International Conference on the High Energy Physics : ICHEP08 / - , 2008

Skup
International Conference on the High Energy Physics (34 ; 2008)

Mjesto i datum
Philadelphia (PA), Sjedinjene Američke Države, 29.07.2008. - 05.08.2008

Vrsta sudjelovanja
Pozvano predavanje

Vrsta recenzije
Nije recenziran

Ključne riječi
form factors; b physics

Sažetak
We present a QCD light-cone sum rule (LCSR) estimation of the B -> pi, B -> K, and Bs -> K form factors calculating gluon radiative corrections at next-to-leading order. The MS-bar b-quark mass is used, instead of the one-loop pole mass employed in the previous analyses. For B -> K and Bs -> K form factors the SU(3)-symmetry breaking corrections are included, both in the hard-scattering kernels and in the distribution amplitudes (DAs). By combining the predicted value for f^+_{; ; ; Bpi}; ; ; (0) with the product |Vub f^+_{; ; ; Bpi}; ; ; | extracted from the B -> pi l nu measurement, we obtain the LCSR prediction for Vub CKM matrix element.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA