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Good question Tim. I'll take a look at the Møller MC and see if that sheds any light on this. ________________________________ From: Nelson, Timothy Knight Sent: Friday, November 17, 2017 2:51 PM To: Graf, Norman A. Cc: Rafayel Paremuzyan; [log in to unmask]; hps-software Subject: Re: [Hps-analysis] test pass 7d Hi Norman, Thanks for being really on top of this. It’s not a question for today, but on the momenta: do we really even know that we expect the x and y momenta to be centered on zero given ECal acceptance and alignment effects? This has been on my mind a fair bit w.r.t. trying to pin down large scale SVT alignments. Cheers, Tim > On Nov 17, 2017, at 2:17 PM, Graf, Norman A. <[log in to unmask]> wrote: > > Dear Colleagues, > I've posted the results of my first, quick analysis of the tpass7d output to the #project-2015pass7 channel on Slack: https://heavyphotonsearch.slack.com/messages/C5FCT7161/ . So far I have only analyzed the Møller skim from run 5772. > Preliminary conclusions are: > > Unconstrained vertex position reconstruction consistent with beamspot centered at (0,0) and a target at z=0.5mm. > > Unconstrained vertex momenta show only very small deviations of beam from z axis. > > Uniformity of mass calculated from the three vertex collections (Unconstrained, BeamspotConstrained and TargetConstrained) confirms the internal consistency of locating the target at z=0.5mm. > > TargetConstrained Møller mass (from a simple Gaussian fit) is > > m=0.033276±0.000003 > > TargetConstrained Møller mass resolution (from a simple Gaussian fit) is > > sigma=1.4633E-3 ± 3.0E-6 > > So far, so good. > > Norman > > > Use REPLY-ALL to reply to list > To unsubscribe from the HPS-SOFTWARE list, click the following link: > https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=HPS-SOFTWARE&A=1 ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the HPS-SOFTWARE list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=HPS-SOFTWARE&A=1