Contents of IDR: PPEG IDS-NF plenary meeting RAL, UK September 22-25, 2010 Walter Winter Universität Würzburg TexPoint fonts used in EMF: AAAAA A A A
2 Contents Time line/status Some highlights from existing IDR Beyond the IDR – towards the RDR
3 Time line Scope finalized (yesterday with other WGs)
4 Status/ contents of document P. Huber - Editor
5 Status quo (frozen) Presentation: Low-E and high-E NF as separate options Migration matrices for HENF 100kt + 50kt MIND for HENF 35 kt TASD for LENF Systematics: use established numbers to quantify effects of migration matrices useful muon decays/year
Highlights from IDR (existing part – TO BE EDITED)
7 Expectations until RDR Expect 13 discovery if sin 2 2 13 > 0.02
8 Physics case? CPV and MH (90% CL) unlikely Need next generation of experiments!
9 HENF: optimization/robustness 4000 km km optimal (small 13 ) Combination robust wrt New physics Lower luminosity Systematics (Xsecs) Long baseline good for Matter effects Atm. params Mass hierarchy
10 HENF: Performance
11 Recent changes/potential Sites only rudimentarily discussed …
12 New physics constraints Sterile neutrinos at HENF 3+1 scheme: 3 additional angles HENF (near detectors) have some sensitivity to very light sterile neutrinos, motivated by cosmology! arXiv:
13 NSI at LENF LENF has sensitivity to new physics; platinum channel may be useful! (T. Li)
14 Experiment comparison (1) Also: LBNE etc
15 Experiment comparison (2) From Euronu … to be updated Competitors? No BB.. Existing Intermediate?
Beyond the IDR
17 Issues beyond IDR contamination; also in disappearance channel (lower E would suppress any problems …) Near detector, systematics 50 kt downgrade? Triangular shaped ring? Background versus signal optimization of MIND? MIND on surface? + Learn how to count! (people, money, magnets, …)
18 On systematics Two storage rings: 4 fluxes; even with 2.5% flux error reasonable performance, 0.1% (ND) has small impact Reason: Systematics correlations, not just numbers! Systematics: Have to learn lesson from reactor experiments! (Mezzetto, Schwetz)
19 Staging/E cutting points Define cutting points wisely: GeV? 12.5 GeV? 25 GeV? Can be easily related to cost ? GeV? ?
20 Vision towards RDR? Cost vs physics MINDTASD 4.5 GeV1.2 IMUs? Performance: … … 12.5 GeV1.7 IMUs? Performance: … … 25 GeV2.2 IMUs? Performance: … …
21 Staging scenarios? Example: Phase I: LENF to look for 13 Phase II: Energy upgrade: find CPV? Phase III: Detector upgrade or second baseline: Precision/parameter space cov.? (blue dashed: detector mass upgrade; blue solid: second baseline; arXiv: )
22 Summary IDR: PPEG part in good shape Further input/updates expected within next few months (November?) Scope/emphasis frozen First ideas/to dos for RDR discussed Go into open issues sections