【摘 要】
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Properties of the B-meson light-cone wavefunction up to next-to-leading order Fock state expansion are studied by a comparative study of the B →π, K form fact
【机 构】
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Department of Physics,Chongqing University,Chongqing 400044
论文部分内容阅读
Properties of the B-meson light-cone wavefunction up to next-to-leading order Fock state expansion are studied by a comparative study of the B →π, K form factors within the kT factorization approach and the light-cone sum ruleanalysis. The form factors FB→π,+,0,T and FB→K+,0,T are carefully re-calculated up to (1/m2b) within the kT factorization approach in the large recoil region. The QCD light-cone sum rule is applicable in the large and intermediate energy regions, and the QCD light-cone sum rule results in Ref. [12] are adopted for such a comparative study. It is found that when the two phenomenological parameters A ∈ [0.50, 0.55] and δ∈ [0.25, 0.30], the results of FB→π+0,T(Q2) and FB→K+,0,T (Q) from these two approaches are consistent with each other in the large recoil energy region.
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