B P and B V form factors from B-meson light-cone sum rules beyond leading twist

被引:179
作者
Gubernari, N. [1 ]
Kokulu, A. [1 ]
van Dyk, D. [1 ]
机构
[1] Tech Univ Munich, Dept Phys, James Franck Str 1, D-85748 Garching, Germany
关键词
QCD Phenomenology; QCD; DECAYS; SYMMETRY; LIMIT;
D O I
10.1007/JHEP01(2019)150
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
We provide results for the full set of form factors describing semileptonic B-meson transitions to pseudoscalar mesons , K, D Our results are obtained within the framework of QCD Light-Cone Sum Rules with B-meson distribution amplitudes. We recalculate and confirm the results for the leading-twist two-particle contributions in the literature. Furthermore, we calculate and provide new expressions for the two-particle contributions up to twist four. Following new developments for the three-particle distribution amplitudes, we calculate and provide new results for the complete set of three-particle contributions up to twist four. The form factors are computed numerically at several phase space points using up-to-date input parameters, including correlations across phase space points and form factors. We use a model ansatz for all contributing B-meson distribution amplitudes that is self-consistent up to twist-four accuracy. We find that the higher-twist two-particle contributions have a substantial impact on the results, and dominate over the three-particle contributions. Our numerical results, including correlations, are provided as machine-readable files in the supplementary material. We discuss the qualitative phenomenological impact of our results on the present b anomalies.
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页数:45
相关论文
共 111 条
[31]   Two-loop corrections to the B → π form factor from QCD sum rules on the light-cone and |Vub| [J].
Bharucha, Aoife .
JOURNAL OF HIGH ENERGY PHYSICS, 2012, (05)
[32]   R(D*), |Vcb|, and the Heavy Quark Symmetry relations between form factors [J].
Bigi, Dante ;
Gambino, Paolo ;
Schacht, Stefan .
JOURNAL OF HIGH ENERGY PHYSICS, 2017, (11)
[33]   Angular distributions of (B)over-bar→K(l)over-barl decays [J].
Bobeth, Christoph ;
Hiller, Gudrun ;
Piranishvili, Giorgi .
JOURNAL OF HIGH ENERGY PHYSICS, 2007, (12)
[34]  
Bobeth C, 2018, EUR PHYS J C, V78, DOI 10.1140/epjc/s10052-018-5918-6
[35]   QCD factorization for B → ππlν decays at large dipion masses [J].
Boeer, Philipp ;
Feldmann, Thorsten ;
van Dyk, Danny .
JOURNAL OF HIGH ENERGY PHYSICS, 2017, (02)
[36]  
Bordone M, 2016, EUR PHYS J C, V76, DOI 10.1140/epjc/s10052-016-4274-7
[37]   Rare decay B → Kl+l- form factors from lattice QCD [J].
Bouchard, Chris ;
Lepage, G. Peter ;
Monahan, Christopher ;
Na, Heechang ;
Shigemitsu, Junko .
PHYSICAL REVIEW D, 2013, 88 (05)
[38]   MODEL-INDEPENDENT EXTRACTION OF VERTICAL-BAR-V-CB-VERTICAL-BAR USING DISPERSION-RELATIONS [J].
BOYD, CG ;
GRINSTEIN, B ;
LEBED, RF .
PHYSICS LETTERS B, 1995, 353 (2-3) :306-312
[39]  
Braun V., COMMUNICATION
[40]   Higher-twist B-meson distribution amplitudes in HQET [J].
Braun, V. M. ;
Ji, Yao ;
Manashov, A. N. .
JOURNAL OF HIGH ENERGY PHYSICS, 2017, (05)