New Results from the Isospin Analysis of B→ππ Decays (CPの破れと物質生成)

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概要

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• We present an algebraic isospin approach towards a more straightforward and model-independent determination of the weak phase α (or Φ_2) and QCD penguin pollution in B→ππ decays. The world averages of current experimental data allow us to impose some useful constraints on the isospin parameters of B→ππ transitions. We find that the magnitude of α (or Φ_2) extracted from the indirect CP violation in π^+π^- mode is in agreement with the standard-model expectation from other indirect measurements, but its four-fold discrete ambiguity has to be resolved in the near future.

• 素粒子論グループ 素粒子研究編集部の論文
• 2005-08-20

著者

• Zhang He

  Institute Of High Energy Physics. Chinese Academy Of Sciences

• Xing Zhi-zhong

  Institute of High Energy Physics. Chinese Academy of Sciences

• Xing Zhi-zhong

  Institute Of High Energy Physics

関連論文

• New Results from the Isospin Analysis of B→ππ Decays (CPの破れと物質生成)
• Naturalness and Testability of TeV Seesaw Mechanisms(Particle Physics beyond the Standard Model)
• Geometric Neutrino Mass Hierarchy and Leptogenesis (CPの破れと物質生成)

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