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We report the first observation of $B^{pm}topsi(2S)pi^{pm}$, a Cabibbo- and color-suppressed decay. This analysis is based on $657times10^{6}$ $Boverline B$ events collected at the $Upsilon(4S)$ resonance with the Belle detector at the KEKB energy-asymmetric $e^+e^-$ collider. The measured branching fraction is ($2.44 pm 0.22 pm 0.20$)$times 10^{-5}$ and the charge asymmetry is $mathcal{A}=0.022 pm 0.085 pm 0.016$. The ratio of the branching fractions $mathcal {B}(B^{pm} to psi(2S) pi^{pm})$$/ mathcal {B}(B^{pm} to psi(2S) K^{pm})$ $ = (3.99 pm 0.36pm 0.17)%$ is also determined.
Measurements of $CP$ observables in $B^pm rightarrow D^{(*)} K^pm$ and $B^pm rightarrow D^{(*)} pi^pm$ decays are presented, where $D^{(*)}$ indicates a neutral $D$ or $D^*$ meson that is an admixture of $D^{(*)0}$ and $bar{D}^{(*)0}$ states. Decays
A first study of CP violation in the decay modes $B^pmto [K^0_{rm S} K^pm pi^mp]_D h^pm$ and $B^pmto [K^0_{rm S} K^mp pi^pm]_D h^pm$, where $h$ labels a $K$ or $pi$ meson and $D$ labels a $D^0$ or $overline{D}^0$ meson, is performed. The analysis use
We analyze the partial rate asymmetry in $B^{pm} to P {bar P} pi^{pm}$ decays ($ P = pi^+, K ^+, pi^0, eta$) which results from the interference of the nonresonant decay amplitude and the resonant amplitude for $B^{pm} to chi_{c0} pi^{pm} $ followed
The $B^{pm}$ meson production asymmetry in $pp$ collisions is measured using $B^+ to bar{D}^0 pi^+$ decays. The data were recorded by the LHCb experiment during Run 1 of the LHC at centre-of-mass energies of $sqrt{s}=$ 7 and 8 TeV. The production asy