 |
 |
Dear All, as promised, the technical development of a kinematic fit for semileptonic B events is now finalized. All technical aspects have been tested successfully (e.g. zero mass for neutrino, overall constraint fullfillment,...). The fit uses the whole event information including not only the leptonic B decay but also the fully reconstructed B candidate on the "other side". Hence, not only energy momentum conservation but also additional mass constraints like Equal Mass or B Mass hypothesis can be used. For those who might be interested in details, I have made a short node describing the technical and physical aspects of this tool. Some performance test are also shown in this note. The note can be found in: http://www.slac.stanford.edu/~buchmuel/B-xlv_kinfit.ps This test indicates that's variables build out of information from X-system AND neutrino (missing momentum) are the most promising once in terms of "resolution improvements". The results also suggest that more work has to invested in the improvement of the X-system reconstruction because it seems to be the limiting part in the kinematic reconstruction. I am looking forward to see your reaction/remarks/comments. Cheers, Oliver By the way, this is clearly not the final word concerning kinematic fitting of the semileptonic events ... it more supposed to be a start ...!