CP Violation in $B^\pm\to γπ^\pmπ^+π^-$

Details CP Violation in $B^\pm\to γπ^\pmπ^+π^-$ CP Violation in $B^\pm\to γπ^\pmπ^+π^-$

1994-06-24

arxiv.org/abs/hep-ph/9406391v1

Phys.Rev.Lett.74:220-223,1995

Physics

High Energy Physics

High Energy Physics - Phenomenology

8, SLAC-PUB-6524

Scientific paper

10.1103/PhysRevLett.74.220

We consider CP violating effects in decays of the type $B^\pm\to \gamma a^\pm_{1,2}$ where $a_{1,2}$ are the $J^P=1^+$ and $2^+$ resonances each decaying to the common final state via $a^\pm_{1,2} \to\pi^\pm\rho^0$. The resonances enhance the CP asymmetries and also knowledge of their masses and widths facilitates calculations of the effects. Several types of CP asymmetries are sizable ($\sim10$--30\%) requiring about (3--10)${}\times10^8$ $B^\pm$ mesons for detection at the $3\sigma$ level thereby providing a method for measuring the angle $\alpha$ in the unitarity triangle. \bigskip

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