Improved determination of the D → K − π + π + π − coherence factor and associated hadronic parameters from a combination ofe+e−→ψ(3770)→cc¯andpp→cc¯Xdata

• DOI: 10.1016/j.physletb.2016.04.037
• Publication Date: 2016-04-30T06:53:59Z
• Authors: T. Evans; S.T. Harnew; J. Libby; S. Malde; J. Rademacker; G. Wilkinson
• Keywords: Unitarity; Bar (unit)

Measurements of the coherence factor $R_{K3\pi}$, average strong-phase difference $\delta^{K3\pi}_D$ and mean amplitude ratio $r_D^{K3\pi}$ for decay $D \to K^-\pi^+\pi^+\pi^-$ are presented. These parameters important inputs to determination unitarity triangle angle $\gamma$ in $B^- DK^-$ decays, where $D$ designates a superposition $D^0$ $\bar{D}{}^0$ mesons decaying common final state. The results based on combined fit observables obtained from re-analysis CLEO-c $\psi(3770)$ data set those measured $D^0\bar{D}^0$ mixing study performed by LHCb collaboration.