Hi,

(please see below... in the > > part...)

> Short corrcetion: Concezio just sent me an email saying
> that he cannot on Thursday next week. So Let's meet on
> Friday, 20th of January, next week.
>
> Concezio & Roberto: please keep us informed already before
> where you are standing and what kind of problems you are
> encountering.
>
> Cheers,
> Heiko
>
> On Fri, 13 Jan 2006, Heiko Lacker wrote:
>
> > Hi,
> >
> > as a follow-up Concezio, Francesca and myself had a discussion.
> > Concezio will give a short status report on Monday in the AWG meeting.
> >
> > Here is the tentative time schedule/working agenda:
> >
> > 0. Content of the publication: We want to have results for
> >    * mX-q^2
> >    * mX
> >    * P+
> >    * difference in charged and neutral B's
> >
> >    Concerning quoting the result we intend to show them for
> >    * SF parameters obtained from b->s gamma + b->clnu moments
> >    * SF parameters obtained from b->s gamma spectrum
> >    * mX-q^2: results quoted for different regions that can be
> >              used by B->Xsll
> >
> >    * For HFAG purposes (not in paper): separate numbers for
> >      b->s gamma + b->clnu moments
> >
> >
> > 1. Improve our mES fit procedure!
> >    This might solve various open problems we have seen:
> >    - problems in 1-bin unfolding
> >    - instabilities in mm^2 scans
> >    - unphysically large differences in B+ and B0 partial BF's
> >    This is the bottle-neck of the analysis.
> >
> >    Concezio and Roberto will keep in close contact and try to
> >    settle this as fast as possible.
> >
> >    We are proposing to meet next Thursday instead of Tuesday since Concezio
> >    is travelling next Tuesday. The same we want to do in the next-to-next
> >    week. If 8:45 for next two Thursday's imposes a problem please speak up!
> >    Otherwise I will shift the phone conference reservations for the next
> >    two weeks to Thursday.
> >
> > 2. Once the m_ES fit procedure is settled which is hopefully the case on
> >    the time scale of 1-2 weeks we need to decide on the neutral & track
> >    selection. For this we need to redo the mm^2 scans. Roberto, what is
> >    your time estimate for doing this?
> >
> > 3. Systematics
> >    a) During 1. & 2. Wolfgang can improve on the PID systematics procedure.
> >    b) Kerstin: Is it possible to use the code as it is we are using for
> >       re-weighting the multiplicity categories to apply it on the analysis?
> >       If so, we could reduce the hadronization uncertainty without too much
> >       code development. Otherwise we should stick to the more conservative
> >       treatment.

Yes and no. The code we are using for the unfolding is in
void VirClass::UnfHistos(int mult) and void VirClass::MultCorr(), both
located in VirUtil.icc. But in principle, the same code could be
used for BRBR, but it needed to be moved to another place and
disentangled from the unfolding specific things - i.e. it
would need to be done ealier in the process I guess. At this point only
the MC we are using for the unfolding itself (not for the background
subtraction) is reweighted. But it should not require too much work to
make this usable for the BRBR as well.

There is another point - we have not yet had a second look at how
we define the multiplicity categories. That is still on our to-do-list.
The one implemented currently are the BAD 540 categories. Daniele
suggested these should be revisited and category definition should be
based on underlying physics.

Cheers,
Kerstin


> >    c) Klong: Wolfgang, do you have any news from David?
> >              If there is nothing avaiable very soon we have to stick to
> >              the old recipe.
> >    d) Running the systematics is expected to take about 1 week.
> >       I assume this is shared at least by Roberto and Wolfgang.
> >       What about the availability of Antonio?
> >
> > 4. Documentation:
> >    1) BAD: volunteer?
> >    2) PRL draft: Heiko volunteering
> >
> >
> > If there are additional inputs for Concezio please let him know in time.
> >
> >
> > Cheers,
> > Heiko
> >
> >
> > On Tue, 10 Jan 2006, Heiko Lacker wrote:
> >
> > > Hi,
> > >
> > > here is the list of things to-be-done (modulo stuff I forgot,
> > > so please correct me):
> > >
> > > ---------------------------------------------------------------
> > >   Task:                                 Person          Status
> > > ---------------------------------------------------------------
> > > * mES fits                              Roberto
> > >
> > > * improve  systematics procedure:
> > >   - PID                                 Wolfgang
> > >   - Klong                               Wolfgang
> > >   - Hadronization: It would be nice to
> > >     reduce the 3% quoted if time allows.
> > >     Currently, we are conservative.
> > >
> > > * Repeat systematics after final
> > >   track & neutral selection fixed:
> > >   - Tracking eff.                         ?
> > >   - Neutral Eff.                          ?
> > >   - Neutral Corr.                         ?
> > >   - K_L                                   ?
> > >   - PID eff. and misID                    ?
> > >   -------------------------------------------------------------
> > >   - mES shape                             ?
> > >   - mES parameters                        ?
> > >   - eps-double-ratio                      ?
> > >   -------------------------------------------------------------
> > >   - SF parameters                         ?
> > >   - SF form                               ?
> > >   - Excl. b->ulnu                         ?
> > >   - Hadronization                         ?
> > >   - Gluon splitting                       ?
> > >   -------------------------------------------------------------
> > >   - B SL BF's                             ?
> > >   - D BF's                                ?
> > >   -------------------------------------------------------------
> > >
> > > * writing supporting document             ?
> > >
> > > * writing PRL draft                     Heiko
> > >
> > >
> > > Cheers,
> > > Heiko
> > >
> >
>