Hi Tjeerd, et al,
This morning I kept track of the following comments made to the tagging conference note. Please check if I understood your comments correctly. (Marcel or Tjeerd will probably send these comments soonish to the proponents?)
Cheers, Niels
---------------------------------------------------------------------- 1) page 2, line 49/50. B*, B**. We would like to see the invariant mass distribution of the B+pi and B+pipi final state, to see the contribution (and/or potential) of B* and B** for the same-side tagging. (In fact, this is might be an interesting topic on its own.)
2) page 6, Fig. 4, mixed/unmixed, B0/B0bar. We would be interested to see the mass and proper time distribution separately for the four samples, corresponding to mixed/unmixed and B0/B0bar events, respectively. These four distributions might reveal differences between B0 and B0bar samples, and differences in the background behaviour (e.g. as function of proper time). In particular, this might be interesting for the B0->J/psiK*0, which shows a large difference in tagging performance between B0 and B0bar.
3) page 10, Table 2. 'Average'. We think the distinction between 'average' and 'combined' perfromance is confusing, and probably not needed. We would propose to omit the 'average' results and only quote the 'combined' results.
4) page 10, line 182. pT(B) dependence. The calculated mistag rate does not depend on pT(B), as shown in Fig.8. However, one really would like to know if the actual _measured_ mistag rate does not depend on pT(B). If indeed the data size does not allow to study this, we propose to add at least an extra sentence, at line 182: "... the average does not depend on the pT of the B. The data sample size does not yet allow to investigate the measured mistag rate as a function of the pT of the B, but results from simulation show that the true mistag rate is also not dependent on the pT of the B [7]."
On Tue, 8 Mar 2011, Tjeerd Ketel wrote:
Dear Colleagues,
This morning we skipped the presentation by Niels Tuning. Tomorrow we will have this presentation in room N328 at the only time a room is available in the morning with EVO.
- 11:15 Niels Tuning will activate your appetite to read draft 'Optimization and calibration of the LHCb tagging performances using 2010 data'
On Monday 14 March we foresee to go through this and the remaining drafts for comments.
Best regards, Tjeerd _______________________________________________ Bfys-physics mailing list Bfys-physics@nikhef.nl https://mailman.nikhef.nl/mailman/listinfo/bfys-physics
--