Hi, you will find at http://www.slac.stanford.edu/~bozzi/r14_522.jpg the results of mES fits where the mES range is [5.22, 5.29] (default is [5.2, 5.29]). Fit function is still argus+Crystal Ball. For e.g. generic MC the chisq goes down by a factor 2, but it is still rather high. Concezio. -- Concezio Bozzi <[log in to unmask]> INFN Sezione di Ferrara