The LSND-ino (with help from Extra Dimensions)
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Transcript of The LSND-ino (with help from Extra Dimensions)
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IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University
The LSND-ino(with help from Extra Dimensions)
Tom WeilerVanderbilt University
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IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University
LSND data and inference
Third m2, and so fourth neutrino mass-state 4
Z-width requires 4 to be gauge-singlet – “sterile’
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IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University
Incredible, yes; Credible, ????
• Fails S. Biller’s “redundancy criterion (and his second redundancy criterion too)
• Would I bet money on it being right? (I’d love to bet some of Don Perkin’s money on it, and WIN)
• Mini-BooNE coming very soon, to a conference near you.
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IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University
Failure of LSND stable sterile in 4D
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IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University
Proposed models (some dead)
• Three (or Four) Nu with broken CPT DEAD (ALIVE)• Lepton-number violating muon decay DEAD• Five Nu oscillations• Low reheat-temperature cosmology• QGravity decoherence with broken CPT• MaVans (mass-varying neutrinos)• Four Nu with decay • Extra-dimensional geodesics for sterile neutrinos
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IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University
• Have new parameters/new physics
5th neutrino, DK to scalar, more spacetime,
quantum gravity, new cosmology, coupling to DarkEnergy, …..
o Way beyond Standard Model
o Testable predictions
Commonality of models
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IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University
KeV-MeV 4 model
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IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University
Fits
Note the parameter equivalences
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IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University
Brane-Bulk resonance model
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IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University
In QG/StringTheory, brane is dynamical, fluctuating
due to Quantum MechanicsThermal MechanicsIn-Brane stresses (e.g. EM vs. gravity)Out of Brane experiences
(e.g. trans-brane gravity)
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IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University
A tale of two geodesics
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IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University
BB-resonance
which is the (fluctuation aspect ratio)2
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IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University
Two-flavor resonances
Define |a>U = |4> - < s | 4 > | s >
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IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University
Brane-Bulk Resonant Oscillation
In nu and nubar channels(gravity doesn’t care)
CDHS
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IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University
Goodbye CDHS!
CDHS
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IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University
Examples: n00 MeV resonance
And significant disappearance for stopped-pion source (SNS)
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IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University
Example: 40 MeV resonance
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IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University
Conclusions
If LSND is correct, then ….theory needs a HUGE accommodation.
(In)validation is “just around the corner,With Fermilab’s MiniBooNE experiment
(altho some LSND models predict null MiniBooNE, positive something else)