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The LSND-ino (with help from Extra Dimensions)

In this presentation from the IOP/CfCP Neutrino Meeting on June 29, 2005, Tom Weiler of Vanderbilt University delves into the implications of the LSND data on our understanding of neutrino mass states, particularly the existence of a fourth neutrino mass state, n4. He discusses potential models, including sterile neutrinos and brane-bulk resonance frameworks, in the context of current experiments like MiniBooNE. Weiler raises critical inquiries regarding the credibility of the LSND findings and emphasizes the need for accommodating theories to align with experimental outcomes, hinting at significant developments on the horizon.

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The LSND-ino (with help from Extra Dimensions)

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  1. The LSND-ino(with help from Extra Dimensions) Tom Weiler Vanderbilt University IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University

  2. LSND data and inference Third dm2, and so fourth neutrino mass-state n4 Z-width requiresn4 to be gauge-singlet – “sterile’ IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University

  3. 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. IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University

  4. Failure of LSND stable sterile in 4D IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University

  5. 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 IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University

  6. Commonality of models • 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 IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University

  7. KeV-MeV n4 model IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University

  8. Fits Note the parameter equivalences IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University

  9. Brane-Bulk resonance model IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University

  10. 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) IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University

  11. A tale of two geodesics IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University

  12. BB-resonance which is the (fluctuation aspect ratio)2 IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University

  13. Two-flavor resonances Define |na>U = |n4> - < ns | n4 > | ns > IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University

  14. Brane-Bulk Resonant Oscillation CDHS In nu and nubar channels (gravity doesn’t care) IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University

  15. Goodbye CDHS! CDHS IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University

  16. Examples: n00 MeV resonance And significant nm disappearance for stopped-pion source (SNS) IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University

  17. Example: 40 MeV resonance IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University

  18. 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) IOP/CfCP Neutrino Meeting, June 29, 2005, Tom Weiler, Vanderbilt University

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