Improved determination of the D → K − π + π + π − coherence factor and associated hadronic parameters from a combination of e+e−→ψ(3770)→cc¯ and pp→cc¯X data
T. Evans (University of Oxford, Denys Wilkinson Building, Keble Road, OX1 3RH, United Kingdom); S.T. Harnew (University of Bristol, Bristol, BS8 1TL, United Kingdom); J. Libby (Indian Institute of Technology Madras, Chennai, 600036, India); S. Malde (University of Oxford, Denys Wilkinson Building, Keble Road, OX1 3RH, United Kingdom); J. Rademacker (University of Bristol, Bristol, BS8 1TL, United Kingdom); et al - Show all 6 authors
Measurements of the coherence factor RK3π , the average strong-phase difference δDK3π and mean amplitude ratio rDK3π for the decay D→K−π+π+π− are presented. These parameters are important inputs to the determination of the unitarity triangle angle γ in B−→DK− decays, where D designates a superposition of D0 and D¯0 mesons decaying to a common final state. The results are based on a combined fit to observables obtained from a re-analysis of the CLEO-c ψ(3770) data set and those measured in a D0D¯0 mixing study performed by the LHCb Collaboration.
