September 26, 2011 (11:30AM), Physics Working Group

ESNET and EVO will be available:

1. ESNET: 85-42553 (85-HALLD)

2. An EVO room under GlueX will be reserved

• EVO Recording: Choose File->Open URL... from EVO Recording Player and enter the following:

  http://www.jlab.org/Hall-D/meetings/EVO/Physics-11-04-25-1133/Physics-2011-04-25.evx

3. Phone:

• +1-866-740-1260 : US+Canada
• +1-303-248-0285 : International
• then enter participant code: 3421244# (remember the "#"). Phone connection only upon request.
• or www.readytalk.com (and code without the #)

Agenda

1. addressing reconstruction issues...
   • Tasks and Topics
2. physics analyses
   • Analysis of b1pi at UConn: First PWA fits (Igor Senderovich)
   • Simulations of cascade baryons (Nathan Sparks)

Minutes

1. Maximum Likelihood Fitting.
   1. A short note by Curtis A. Meyer on maximum Likelihood Fitting.
   • M. Williams, How good are your fits? Unbinned multivariate goodness-of-fit tests in high energy physics, JINST 5 P09004 (2010). Link to the JINST server, also a link to the arXiv server for this article.
   • Note by R. Jones -- for an illustration of the failure of using the maximum likelihood value, and its agreement with the values from MC samples of similar size, as a criterion for goodness of fit, see Appendix A in the above paper. This simple example was an eye-opener for me!
2. Photon polarization in PWA
   • Record of a past discussion of precision requirements for polarimetry in Hall D