CP violation in multibody B decays from QCD factorization

被引：42

作者：

Klein, Rebecca ^{[1
]}

Mannel, Thomas ^{[1
]}

Vitro, Javier ^{[2
,3
]}

Vos, K. Keri ^{[1
]}

机构：

[1] Univ Siegen, Nat Wiss Tech Fak, Theoret Phys 1, D-57068 Siegen, Germany

[2] Tech Univ Munich, Phys Dept T31, James Franck Str 1, D-85748 Garching, Germany

[3] MIT, Ctr Theoret Phys, 77 Mass Ave, Cambridge, MA 02139 USA

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2017年 / 10期

基金：

瑞士国家科学基金会;

关键词：

CP violation; Heavy Quark Physics; FORM-FACTORS; CHARMLESS; MODEL;

D O I：

10.1007/JHEP10(2017)117

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 test a data-driven approach based on QCD factorization for charmless three-body B-decays by confronting it to measurements of CP violation in B- -> pi(-)pi(+)pi(-) . While some of the needed non-perturbative objects can be directly extracted from data, some others can, so far, only be modelled. Although this approach is currently model dependent, we comment on the perspectives to reduce this model dependence. While our model naturally accommodates the gross features of the Dalitz distribution, it cannot quantitatively explain the details seen in the current experimental data on local CP asymmetries. We comment on possible refinements of our simple model and conclude by briefly discussing a possible extension of the model to large invariant masses, where large local CP asymmetries have been measured.

引用

页数：17

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