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Hoi Daniele, you are right and I am right and both are wrong -- to some extent. There is a big difference between B0 and B+ (some of the heavy resonances decay exclusively into KKbar states). I had forgotten that eta' does contain an admixture of ssbar, so my strangeness counting (based on the quark content) was wrong on the K level. I changed this to count kaons (charged, K0S, K0L). We might argue about whether or not to include acceptance cuts and remove KL. http://www.slac.stanford.edu/~ursl/talks/030603/bnu.eps.gz http://www.slac.stanford.edu/~ursl/talks/030603/bch.eps.gz contain the distributions for neutral and charged B. The events with kaons are composed of the following Xh states: B+ B0 ID #events pdt.table ID #events pdt.table ==================================== ==================================== 41 : 778 +/- 27.8927 non-resonant 42 : 690 +/- 26.2679 non-resonant 115 : 3 +/- 1.73205 a_20 215 : 3 +/- 1.73205 a_2 225 : 2 +/- 1.41421 f_2 10211: 2 +/- 1.41421 a_0 335 : 16 +/- 4 f'_2 10111: 2 +/- 1.41421 a_00 10221: 4 +/- 2 f_0 10333: 143 +/- 11.9583 h'_1 20223: 34 +/- 5.83095 f_1 20333: 265 +/- 16.2788 f'_1 The fractions I get now are Mode B0 B+ ---------------------------- resonant 0.2% 14.0% non resonant 12.1% 13.4% These numbers are on the generic hybrid, i.e. they have not been reweighted to increase the non-resonant b2u component. Maybe someone can calculate the B+ on DECAY.DEC? While checking my absolute normalization, I found a rather interesting effect I would not have expected: In both the hybrid and the nonresonant b->ulnu MC we have b->clnu decays (not b->ccbarlnu). You can look at the dump of the generator block of the hybrid and nonr MC at ~ursl/d/hybrid.log.gz ~ursl/d/nonresonant.log.gz This is dumped directly from recoilNtp.cc with dumpOneB() which is normally commented out... The chains for these files are in ~/macros/fsx/vub/VubAnalysis/chains/hybrid ~/macros/fsx/vub/VubAnalysis/chains/nonresonant This is a 0.5% effect for B+ and 1.5% for B0. I suspect that this might come more easily from the non-resonant generator than ISGW2. Cheers, --U.