Article Dans Une Revue European Physical Journal C: Particles and Fields Année : 2003

Direct CP violation in $B\to \pi^+\pi^- V$ with $\rho^0 - \omega$ mixing effects: phenomenological approach

Résumé

We present a detailed study of direct CP violation and branching ratios in the channels $B^{0,\pm} \to \pi^{+}\pi^{-} V^{0,\pm}$, where $V$ is a vector meson ($K^{* 0,\pm}$ or $\rho^{\pm}$). Emphasis is placed upon the important role played by ${{\rho}^{0}}-{\omega}$ mixing effects in the estimation of the CP-violating asymmetry parameter, $a_{cp}$, associated with the difference of $B$ and $\bar B$ decay amplitudes. A thorough study of the helicity amplitudes is presented as a function of the pion-pion invariant mass. All of the calculations and simulations considered correspond to channels which will be analyzed at the LHCb facility.

Dates et versions

hal-00008759 , version 1 (14-09-2005)

Identifiants

Citer

Ziad Zj Ajaltouni, O. Leitner, Pascal Perret, Cécile Rimbault, A. W. Thomas. Direct CP violation in $B\to \pi^+\pi^- V$ with $\rho^0 - \omega$ mixing effects: phenomenological approach. European Physical Journal C: Particles and Fields, 2003, 29, pp.215-233. ⟨hal-00008759⟩
51 Consultations
0 Téléchargements

Altmetric

Partager

  • More