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Particle Physics Cosmology

Neutrino Mass Measurements. Particle Physics Cosmology. What is the neutrino mass scale?. Hamish Robertson, ESPP12, Kracow , Sept. 11, 2012 . Y.Y.Y. Wong. Y.Y.Y. Wong. Neutrino mass from Beta Spectra. With flavor mixing :. mixing. neutrino masses. from oscillations.

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Particle Physics Cosmology

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  1. Neutrino Mass Measurements Particle Physics Cosmology What is the neutrino mass scale? Hamish Robertson, ESPP12, Kracow, Sept. 11, 2012

  2. Y.Y.Y. Wong

  3. Y.Y.Y. Wong

  4. Neutrino mass from Beta Spectra With flavor mixing: mixing neutrino masses from oscillations mass scale

  5. Current status of direct mass measurement Mainz: solid T2, MAC-E filter C. Kraus et al., Eur. Phys. J. C40, 447 (2005) Troitsk: gaseousT2, MAC-E filter V. Aseev et al., PRD in press (2011) Together:… mv < 1.8 eV (95% CL)

  6. KATRIN At Karlsruhe Institute of Technology unique facility for closed T2 cycle: Tritium Laboratory Karlsruhe TLK Size of experiment now: Diameter 10 m. Next diameter: 300 m! ~ 75 m long with 40 s.c. solenoids

  7. A window to work in Molecular Excitations

  8. A window to work in Molecular Excitations = 0.36 eV Rovibrational states of THe+, HHe+ molecule

  9. Neutrino Mass Limits from β decay 187Re (Genoa, Milano) 3H KATRIN Inv. Hierarchy <me> Oscillation lower bound <m> J.F. Wilkerson & HR

  10. Cyclotron radiation from tritium beta decay (B. Monreal and J. Formaggio, PRD 80:051301, 2009) Radiated power ~ 1 fW

  11. Neutrino mass: some milestones 2012 2013 2014 2015 2016 2017 2018 Construction Running KATRIN: Project 8: Proof concept Prototype Phase I Planck: Analysis 1 Analysis 2

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