Determining CP violation angle $γ$ with B decays into a scalar/tensor meson

Details Determining CP violation angle $γ$ with B decays into a scalar/tensor meson Determining CP violation angle $γ$ with B decays into a scalar/tensor meson

2011-10-24

arxiv.org/abs/1110.5194v2

Phys. Rev. D 85, 051301(R) (2012)

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 2 figures, accepted for publication in Physical Review D as a Rapid Communication

Scientific paper

10.1103/PhysRevD.85.051301

We propose a new way for determining the CP violation angle $\gamma$ without any hadronic uncertainty. The suggested method is to use the two triangles formed by the decay amplitudes of $B^\pm\to (D^0,\bar D^0,D_{CP}^0) K^{*\pm}_{0(2)}(1430)$. The advantages are that large CP asymmetries are expected in these processes and only singly Cabibbo-suppressed $D$ decay modes are involved. Measurements of the branching fractions of the neutral $B_d$ decays into $DK^{*}_{0(2)}(1430)$ and the time-dependent CP asymmetries in $B_s\to (D^0, \bar D^0) M$ ($M=f_0(980),f_0(1370), f_2'(1525), f_1(1285), f_1(1420), h_1(1180))$ provide an alternative way to extract the angle $\gamma$, which will increase the statistical significance.

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