3 flavours
Post on 30-Dec-2015
38 Views
Preview:
DESCRIPTION
TRANSCRIPT
Kai Zuber, TUD
3 flavours
Status 2008
Neutrinos are guilty!!!
The expected neutrino flux is measured, but 60-70% of neutrinos have wrong flavour!!!
Survival probability today
Survival probability
Mattereffects
VVacuum
Borexino at Gran Sasso
300 t Liquid Scintillator−− +→+ ee xx νν
Real timedetection of7Be neutrinos
Borexino - First results
No history without future
SuperKSNO LETA (just published)
SNO+
KAMLAND
LENSCLEANMOONCOBRAXMASS
+ more...
Still no real time measurement of pp-neutrinos
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
Measurement of pep, 8B, CNO (and if lucky pp) neutrinos in real timeSNO+
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)
Kai Zuber, TUD
Detection- Inverse beta decay
Time coincidence positron annihilation and neutron capture
Kai Zuber, TUD
Results til 2000
Kai Zuber, TUD
KamLAND e + p e+ + n_
Kai Zuber, TUD
Reactor antineutrino spectrum
Kai Zuber, TUD
KamLAND
Kai Zuber, TUD
KamLAND - Results
Kai Zuber, TUD
KamLAND
Kai Zuber, TUD
KamLAND- Results
Oscillation status
Global 3 flavour fit
Kai Zuber, TUD
Next: Measurement of 13 angle
Reactor experiments
Double Chooz
Double Chooz- Layout
Double Chooz - Interior
K. Zuber
Double Chooz
LowNu 2011
Third „evidence“ for a non-zero θ13
Double Chooz - Sensitivity
Sensitivity - General
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
top related