Revisiting B → K(*) v(v)over-bar decays in the Standard Model and beyond

被引：26
|
作者：
Becirevic, Damir
Piazza, Gioacchino [1 ]
Sumensari, Olcyr
机构：
[1] CNRS, IJCLab, Pole Theorie, IN2P3, Bat 210, F-91405 Orsay, France
来源：
EUROPEAN PHYSICAL JOURNAL C | 2023年 / 83卷 / 03期
关键词：
QCD CORRECTIONS; PENGUINS;
D O I：
10.1140/epjc/s10052-023-11388-z
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：
In this letter we revisit the Standard Model predictions for B(B -> K-(*) v (v) over bar) and discuss the opportunities that open up when combining its partial decay rate with that of B -> K((*))ll . In the Standard Model a suitable ratio of these two modes can be used to extract C-9(eff), which is essential for a reliable phenomenological analysis of the B -> K((*))ll angular observables. The same ratio also proves to be more sensitive to the presence of New Physics in many plausible extensions of the Standard Model. We also suggest that the separate measurement of B(B -> K v (v) over bar) for high and for low q(2)'s can be helpful for testing the assumed shape of the vector form factor, because the lattice QCD data are obtained at high q(2)'s, whereas the low q(2) region is obtained through an extrapolation.
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页数：15
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