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Hi Kerstin, thanks for looking into this. I have missed the deadline 1st October. Maybe somebody else has asked for D**lnu MC. If this is not the case we should try to do the following: Compare the true distributions for D**lnu between SP5/SP6 and SP8 and use this as a re-weighting factor. Heiko On Tue, 10 Oct 2006, Kerstin Tackmann wrote: > > > ---------- Forwarded message ---------- > Date: Mon, 09 Oct 2006 21:43:51 -0700 > From: David Lange <[log in to unmask]> > To: Kerstin Tackmann <[log in to unmask]> > Cc: [log in to unmask] > Subject: Re: Question on the differences of the generated D_0*0 shape > between SP6 and SP8 MC > > Hi Kerstin > > The problem discussed in this thread affects all particles. Depending on > the mass/width/decay mode you are looking at, it may or may not be an > issue. Until October 1, the easiest way was to request mc with a > somewhat modified decay file. Now, the easiest thing is likely to get > some sp8 and look at reweighting. > > david > > > Kerstin Tackmann wrote: > > *** Discussion title: Event Generators > > Email replies to [log in to unmask] must include: > > In-Reply-To: <"/event_gen/498/2/4"@babar-hn.slac.stanford.edu> > > Subject: ...change this to be about your reply. > > > > Hi David, > > > > does this affect only the D_0^*0, or also the D_0^*+? > > Does it affect the other D**? > > > > Our analysis uses SP5 and SP6 - what is our best option > > to get the correct lineshape for the D**? > > Reweighting probably can at most do part of what we > > want because I remember the maximum allowed deviation from > > mean mass is too big for some D** in SP5. > > > > Thanks, > > Kerstin > > > >> Hi Liaoyuan > >> > >> I guess you mean 'between sp6 and sp8' below. As your plot illustrates > >> nicely, some factors were missing in sp5/sp6 lineshapes, in this case, > >> most importantly phase space factors. If you add the appropriate phase > >> space factors to your BW curve, you should get the sp8 curve. > >> > >> david > >> > > >