Minutes of the Neutrino Factory Physics Study Meeting Tuesday October 26, 1999 Present LBL, FNAL, Rochester, Davis, Stonybrook, Brookhaven? Scribe: Heidi Schellman 1. News: Next meeting is November 9 11:30 CST 12NW/videoland Mike Shaevitz is going to try to get a new microphone. Request for people to construct bibliographies for oscillation topics including probable experimental constraints over the next 5-10 years. Four volunteers, R. Shrock for matter effects, Hitoshi Murayama for a review of the experimental prospects for the parameter sets generated by Group 3, C. Quigg for CP effects, and C. Albright for sterile nus. Lyons proceedings are appearing, check at: http://www.cern.ch/muonstoragerings/Workshop/writeup.html 2. Group 1 Beams report - Geer Text for preliminary introductory chapter on beam properties 2/3rds done ... should be completed in 2 weeks ... and maybe some version of figures available also. Current design assumptions, horizontal = vertical beam divergence = 0.1 / gamma. Momentum spread is 2%. 3. Group 3 Oscillations Scenarios - Albright Talk Two new scenarios were presented, both with m1 ~ m2 << m3. These hold if LSND result is not confirmed. This reduces to an effective two flavor mixing. See : http://www.fnal.gov/projects/muon_collider/nu/study/parameters.html. 4. Group 2/4 Detectors/Oscillations Bernstein - presented tables in which all possible oscillation processes, (example nue->nutau appearance) were classified by experimental signatures such as energy spectrum, NC/CC ratio, electron appearance… Geer showed neutrino rates at a far detector for Scenario 1. Matter effects allow the sign of the mass difference to be determined with reasonable statistical significance for a 2800 km baseline. Spentzouris showed results of far detector simulation using NuTeV detector MC (iron/scintillator sandwich). Showed that charm dimuon backgrounds to muon appearance are small compared to Scenario one oscillation rates. 5. Group 5 Jae Yu has made a version of Geer’s code adapted for short baseline beam ntuple available (version 0.0) see http://www.fnal.gov/projects/muon_collider/nu/study/group5/group5.html for details. Schellman has brief note on near detector beam characteristics, also available from Group 5 page. Near detector beam properties are quite different from the familiar far detector ones.