New determination of the D 0 → K − π + π 0 and D 0 → K − π + π + π − coherence factors and average strong-phase differences

a Indian Institute of Technology Madras, Chennai 600036, India b University of Oxford, Denys Wilkinson Building, Keble Road, Oxford, OX1 3RH, United Kingdom c Pacific Northwest National Laboratory, Richland, WA 99352, USA d Wayne State University, Detroit, MI 48202, USA e Carnegie Mellon University, Pittsburgh, PA 15213, USA f University of Warwick, Coventry, CV4 7AL, United Kingdom g Luther College, Decorah, IA 52101, USA h University of Bristol, Bristol, BS8 1TL, United Kingdom i STFC Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire, OX11 0QX, United Kingdom