Beliebiger Eintrag,

Constrain the UT angle gamma by CP violation parameters in B0 -> pi+ pi-

, , , und .
(08.06.2015)

Zusammenfassung

We calculate the tree and penguin amplitudes in the \$B^0\to\pi^+\pi^-\$ decay channel employing the perturbative QCD factorization approach. Using the amplitudes as input with the theoretical uncertainties sufficiently considered, we constrain the UT angle \$\gamma\$ to \$51^\circłeq\gammałeq64^\circ\$, from the measurements of the CP violation parameters \$C\_\pi^+\pi^-\$ and \$S\_\pi^+\pi^-\$ in \$B^0\to\pi^+\pi^-\$. The U-spin breaking effect between \$B^0\to\pi^+\pi^-\$ and \$B\_s^0K^+K^-\$ is estimated to be around 30\%.

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  • @cmcneile

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