[G14_run] g14 group meeting on 15April2015, 9:00am

[Jamie Fleming]

Hi all,
Today's meeting clashes with an appointment of mine. I did have some questions to present, perhaps they can be simply be answered here. 

- in the timing difference of the ToF and Tagger I still have the distribution offset from zero (~0.4). I am correcting the SC time used, is there something simple I am just not accounting for. 

- similarly for delta beta. Comparing the corrected beta to the measured given by GPID the distribution is not centred around zero (~0.01). Although using betam - beta (again GPID) is centred around zero, which struck me as odd as this is not a corrected beta. To study this I reconstructed the kaon  mass using uncorrected betam and momenta, which is perfectly centred on the PDG mass. With corrections, shifted to higher masses. Is betam pre corrected somehow? 

Your thoughts on these offsets would be greatly appreciated. 

Jamie

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