What can we learn from phi_1 and B_d^0 -> pi^+ pi^- ?

Abstract

We discuss what we can understand from ${\varphi }_1$ and $B_d^0\to {\pi }^{+}{\pi }^{-}$ decay mode. Using a convention without weak phases ${\varphi }_2$ and ${\varphi }_3$, we can solve the parameters from the time-depended CP asymmetry. If we can put a condition the contribution from penguin except for the CKM factor including in the diagram is small, then we can lead the allowed region of $R_t$ or ${\varphi }_2$ by using the convention.

7 pages, 4 figures, references and comments added

References in corpus (5)

• Measurement of the CP-Violating Asymmetry Amplitude sin2beta
• Improved Measurement of Mixing-induced CP Violation in the Neutral B Meson System
• Measurements of Branching Fractions and CP-violating Asymmetries in B0->pi+ pi-, K+ pi-, K+ K- Decays
• CP Violation: The CKM Matrix and New Physics
• Convention-independent study of CP-violating asymmetries in $B\to \pi \pi$

Cited by in corpus (3)

• Large electroweak penguin contribution in B -> K pi and pi pi decay modes
• A Possibility of large electro-weak penguin contribution in B -> K pi modes
• Model Independent Bound on the Unitarity Triangle from CP Violation in B-> pi+ pi- and B-> psi K_S