Minutes of the Neutrino Factory Physics Study Meeting
Tuesday October 26, 1999
Present LBL, FNAL, Rochester, Davis, Stonybrook, Brookhaven?
Scribe: Heidi Schellman
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 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:
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
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. The two scenarios have theta13 maximal or < 0.04.
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
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
5. Group 5
Jae Yu has made a version of Geer’s code adapted for short baseline
beam ntuple available (version 0.0) see
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.