B→f2(1270) form factors with light-cone sum rules

, φ Decay Form Factors from Light - Cone Sum Rules Revisited

We present an improved calculation of B → light vector form factors from light-cone sum rules, including one-loop radiative corrections to twist-2 and twist-3 contributions, and leading order twist-4 corrections. The total theoretical uncertainty of our results at zero momentum transfer is typically 10% and can be improved, at least in part, by reducing the uncertainty of hadronic input paramet...

Light-Cone Sum Rules for the Nucleon Form Factors

We argue that soft non-factorisable terms give a significant contribution to the baryon form factors at intermediate momentum transfers and set up a framework for the calculation of such terms in the light-cone sum rule approach. Among them, contributions of three-quark states with different helicity structure compared to the leading twist prove to be the most important. The leading-order sum r...

Improved approach to the heavy - to - light form factors in the light - cone QCD sum rules ∗

A systematic analysis shows that the main uncertainties in the form factors are due to the twist-3 wave functions of the light mesons in the light-cone QCD sum rules. We propose an improved approach, in which the twist-3 wave functions doesn’t make any contribution and therefore the possible pollution by them can be avoided, to re-examine B → π semileptonic form factors. Also, a comparison betw...

7 Analysis of the Σ − n form - factors with light - cone QCD sum rules

8 Analysis of the B → a 1 ( 1260 ) form - factors with light - cone QCD sum rules

In this article, we calculate the B → a1(1260) form-factors V1(q 2), V2(q 2), V3(q 2) and A(q2) with the B-meson light-cone QCD sum rules. Those formfactors are basic parameters in studying the exclusive non-leptonic two-body decays B → AP and semi-leptonic decays B → Alνl, B → Al̄l. Our numerical results are consistent with the values from the (light-cone) QCD sum rules. The main uncertainty co...