See also
Physics Today (August 01)
Nice article, but severe error in fig. 3 (SNO and SUPER-K interchanged) !
b)Analysis of the sun neutrino oscillation with/without new
SNO done by Fogli.et.al
hep-ph/0106247
Their Delta_m - mixingangle figures are
without SNO and
with SNO
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April 2002 : SNO : Measurement of NC component in solar neutrino flux
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by nu_x d --> p n nu_x
neutron is captured and delayed gamma
produces Cerenkov-electron signal
Their paper (nucl-ex/0204008) is here
The non-nu_e active neutrino-flux (which is thus the nu_mu+nu_tau flux)
is
3.4 +- 0.7 (10**6 cm**-2 sec**-1) A 5.3 SIGMA effect !!!
The total result (only SNO data) from
CC nu_e d --> e p p and
ES nu e --> nu e (That is CC + few % NC)
NC nu_x d --> p n nu_x
is in fig 3 of their paper and here
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December 2002 : First Results from KamLAND
Evidence for Reactor Antineutrino Disappearance
See webpage here
see http://kamland.lbl.gov/
There is also a PRL- paper
KamLAND detects antineutrinos (nue_bar) from fission in a large
number of Japanese reactors ( 79 % of flux come from 26 reactors
at distances 138 to 214 Km).
The measurement procedes through inverse beta-decay
ve_bar p --> e+ neutron
The signal is a prompt one from e+ e- annihilation and a
delayed one from neutron capture and subsequent gamma emission.
They see 54 events compared to 86.8 +- 5.6 expected.
The observed rate relative to expectation is
0.611 +- 0.085 +- 0.041
This gives a 5 * 10**-4 probability for no oscillation
The oscillation pattern
fits very well within the range expected from the
solar neutrino data. Only the LMA solution fits.
The best fit gives Sin**2(2Theta) = 1.0 , Delta m**2 = 6.9 10**-5 eV**2