3 flavours

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Kai Zuber, TUD 3 flavours

description

3 flavours. Status 2008. The expected neutrino flux is measured, but 60-70% of neutrinos have wrong flavour!!!. Neutrinos are guilty!!!. Survival probability today. Survival probability. Vacuum. V. Matter effects. Borexino at Gran Sasso. 300 t Liquid Scintillator. Real time - PowerPoint PPT Presentation

Transcript of 3 flavours

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Kai Zuber, TUD

3 flavours

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Status 2008

Neutrinos are guilty!!!

The expected neutrino flux is measured, but 60-70% of neutrinos have wrong flavour!!!

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Survival probability today

Survival probability

Mattereffects

VVacuum

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Borexino at Gran Sasso

300 t Liquid Scintillator−− +→+ ee xx νν

Real timedetection of7Be neutrinos

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Borexino - First results

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No history without future

SuperKSNO LETA (just published)

SNO+

KAMLAND

LENSCLEANMOONCOBRAXMASS

+ more...

Still no real time measurement of pp-neutrinos

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Secrets of the Sun

Needs measurement of solar CNO neutrinos!

Fundamental test of stellar astrophysics: Are elements homogenously distributed in stars?

Status 2004

Helioseismology in fantastic agreementwith Solar Models

Change of elementalabundances

Asplund et al.2005

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Measurement of pep, 8B, CNO (and if lucky pp) neutrinos in real timeSNO+

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Xenon

Ultimate goal: Measure full solar neutrino spectrum in real time

Limitation of scintillator approach for pp-neutrinos: 14C content

Why not liquid noble gas detector (Xenon 1ton -10ton)

Usage of Xe depleted in 136Xe desirable(also for dark matter searches)

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Kai Zuber, TUD

Detection- Inverse beta decay

Time coincidence positron annihilation and neutron capture

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Kai Zuber, TUD

Results til 2000

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Kai Zuber, TUD

KamLAND e + p e+ + n_

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Reactor antineutrino spectrum

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Kai Zuber, TUD

KamLAND

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KamLAND - Results

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Kai Zuber, TUD

KamLAND

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Kai Zuber, TUD

KamLAND- Results

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Oscillation status

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Global 3 flavour fit

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Kai Zuber, TUD

Next: Measurement of 13 angle

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Reactor experiments

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Double Chooz

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Double Chooz- Layout

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Double Chooz - Interior

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K. Zuber

Double Chooz

LowNu 2011

Third „evidence“ for a non-zero θ13

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Double Chooz - Sensitivity

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Sensitivity - General

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Oscillation - evidences

Atmospheric neutrinosSolar and reactor

sin2 2 = 1.00 , m2 = 2.5 10-3 eV2

sin2 2 = 0.81 , m2 = 8.2 10-5 eV2

Incredible progress in last 10-15 years !!!!

m2 = mi2 −m j

2depending on