Determining the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>C</mml:mi><mml:mi>P</mml:mi></mml:math>violation angle<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>γ</mml:mi></mml:math>in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>B</mml:mi><mml:mi>s</mml:mi></mml:msub></mml:math>decays without hadronic uncertainty

2005/02/28 by Bi-Hai Hong, Cai-Dian Lü, Cai-Dian Lu
Physics and Astronomy · #Neutrino Physics Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-ph

paper · pdf · doi:10.1103/physrevd.71.117301

published as Phys.Rev. D71 (2005) 117301 · 4 pages, including 2 figures, Revtex

arxiv created 2005/05/30 · openalex publication_date 2005/06/09 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We study the rare decays B_s⁰\ensuremath→D^\ifmmode±\else\textpm\fi\ensuremathπ^\ensuremath∓ and B_s⁰\ensuremath→D^\ensuremath∓\ensuremathπ^\ifmmode±\else\textpm\fi, which can occur only via annihilation type W exchange diagrams in the standard model. The time-dependent decay rates of the four channels can provide four CP parameters, which are experimentally measurable. We show that the Cabibbo-Kobayashi-Maskawa angle \ensuremathφ₃=\ensuremathγ can be determined from these parameters without any theoretical model dependence. These channels can be measured in future LHCb experiments to provide a clean way for \ensuremathγ measurement.

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