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

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

2003-04-04

arxiv.org/abs/hep-ph/0304038v2

Phys.Rev.D68:017501,2003

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 4 figures, references and comments added

Scientific paper

10.1103/PhysRevD.68.017501

We discuss what we can understand from $\phi_1$ and $B^0_d\to \pi^+ \pi^- $ decay mode. Using a convention without weak phases $\phi_2$ and $\phi_3$, 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 $\phi_2$ by using the convention.

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