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Contents of IDR: PPEG
IDS-NF plenary meetingRAL, UKSeptember 22-25, 2010
Walter Winter
Universität Würzburg
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Contents
Time line/status Some highlights from existing IDR Beyond the IDR – towards the RDR
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Time line
Scope finalized(yesterday with other WGs)
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Status/contents of document
P. Huber - Editor
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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 1021 useful muon decays/year
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Highlights from IDR
(existing part – TO BE EDITED)
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Expectations until RDR
Expect 13 discovery if sin2213 > 0.02
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Physics case?
CPV and MH (90% CL) unlikelyNeed next generation of experiments!
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HENF: optimization/robustness
4000 km + 7500 km optimal (small 13)
Combination robust wrt New physics Lower
luminosity Systematics
(Xsecs) Long baseline
good for Matter effects Atm. params Mass hierarchy
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HENF: Performance
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Recent changes/potential
Sites only rudimentarily discussed …
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New physics constraintsSterile neutrinos at HENF
3+1 scheme: 3 additional angles
HENF (near detectors) have some sensitivity to very light sterile neutrinos, motivated by cosmology!
arXiv:1007.2419
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NSI at LENF
LENF has sensitivity to new physics; platinum channel may be useful!
(T. Li)
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Experiment comparison (1)
Also: LBNE etc
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Experiment comparison (2)
From Euronu … to beupdated
Competitors?No BB ..
Existing
Intermediate?
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Beyond the IDR
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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, …)
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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)
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Staging/E cutting points
Define cutting points wisely: 4.5-5 GeV? 12.5 GeV? 25 GeV?
Can be easily related to cost
?
4.5-5 GeV?
?
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Vision towards RDR?
Cost vsphysics
MIND TASD
4.5 GeV 1.2 IMUs?Performance: …
…
12.5 GeV 1.7 IMUs?Performance: …
…
25 GeV 2.2 IMUs?Performance: …
…
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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:0911.5052)
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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