Charged-Higgs-boson effects in the B→Dτντ differential decay distribution

被引：127

作者：

Nierste, Ulrich ^{[1
]}

Trine, Stephanie ^{[1
]}

Westhoff, Susanne ^{[1
]}

机构：

[1] Karlsruhe Inst Technol, Inst Theoret Teilchenphys, D-76128 Karlsruhe, Germany

来源：

PHYSICAL REVIEW D | 2008年 / 78卷 / 01期

关键词：

D O I：

10.1103/PhysRevD.78.015006

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We show that the decay mode B -> D tau nu(tau) is competitive with and complementary to B -> tau nu(tau) in the search for charged-Higgs effects. Updating the relevant form factors, we find that the differential distribution in the decay chain (B) over bar -> D (nu) over bar (tau)tau(-)[-> pi(-) nu(tau)] excellently discriminates between standard model and charged-Higgs contributions. By measuring the D and pi(-) energies and the angle between the D and pi(-) three-momenta, one can determine the effective charged-Higgs coupling including a possible CP-violating phase.

引用

页数：6

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