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Round table:

Round table:. Performance indicators in long-baseline neutrino oscillations experiments Introduced by: Ferruccio Feruglio and Alan Bross. Motivations for precise measurements:.

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Round table:

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  1. Round table: Performance indicators in long-baseline neutrino oscillations experiments Introduced by: FerruccioFeruglio and Alan Bross

  2. Motivations for precise measurements: • Neutrino mixing parameters are fundamental parameters and should be know as well as possible so that theory of flavour can be defined, for example: • Theory led: • Tribimaximalansatz: • Need to measure θ13 as well as possible • Need to determine θ12 and θ23 sufficiently well to establish tribimaximal pattern (or maximality of θ23 for example) • Experiment led: • Set target precision to match precision with which quark parameters are known • Set precision by comparison with precision that may be achieved using other techniques, for example: • Lepton flavour violation • ‘Exotic processes’ at LHC

  3. Parameter choice for comparisons: • Issue: • What parameters should be used to evaluate precision of various facilities and to allow comparison of their performance? • Parameter sets close to experimental observables preferred • Very brief discussion of plotting area (volume?) of error ellipse as a function of the parameters: • Need to consider correlations (through correlation coefficients, etc.?) • Need to quantify precision on θ12 from reactor experiments for comparison with likely reach of future facilities • Tacit conclusion seemed to be that it was important to try and develop a paradigm for the quantitative comparison of the measurement performance of the various future options

  4. Additional comments: • Key issues for unravelling physics of flavour: • Majorana nature of neutrino • Existence of charged lepton flavour violation • Existence of leptonic CP violation • Precision measurement of neutrino oscillation parameters • Opportunity to do first rate rare muon programme at the Neutrino Factory should be viewed as an integral part of the programme • Also potential upgrade path to, or proving ground for, the Muon Collider should was also noted • Some discussion too of role of astrophysical sources of neutrinos in determining the properties of the neutrinos themselves

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