Data Release Accompanying the 4th KamLAND Reactor Result
Data Release Accompanying the 4th KamLAND Reactor Result
<last update : June 4, 2012>
‣ Paper
“Constraints on θ13 from A Three-Flavor Oscillation Analysis of Reactor Antineutrinos at KamLAND” by the KamLAND Collaboration (A. Gando et al.). September 2010.
Paper reference : The KamLAND Collaboration, Phys. Rev. D 83, 052002 (2011)
✦ Paper | PostScript | PDF |
‣ χ2 map
The following is ‘KamLAND-only’
✦
best-fit parameters :
| Plain Text | (55.9 MB)
Map
table to obtain the
constants on oscillation parameters in the 4th result paper.
The four columns are
and
in the plain text file.
‣ Links
✦ 2nd result (January 2005)
“Measurement of Neutrino Oscillation with KamLAND: Evidence of Spectral Distortion” (| PostScript | PDF |)
T. Araki et al., Phys. Rev. Lett. 94: 081801, 2005
✦ 3rd result (June 2008)
“Precise Measurement of Neutrino Oscillation Parameters with KamLAND” (| PostScript | PDF |)
S. Abe et al., Phys. Rev. Lett. 100: 221803, 2008
‣ Prompt Energy Spectrum
The following data file provides the estimated energy spectra for backgrounds and reactor anti-neutrino events given in 0.1MeV energy bins. All histograms incorporate the energy-dependent selection efficiency. In the table, the nine columns are shown below. The total events above 0.9 MeV are given in the paper.
1. mid-point of the energy bin using positron energy scale (0.9 ≦ Ep (MeV) ≦ 8.5)
3.reactor anti-neutrino event spectrum for no-oscillation fit [total : 2879 ev]
4.reactor anti-neutrino event spectrum for three-flavor-oscillation fit [total : 1634 ev]
5.accidental background [total : 102.5 ev]
[total : 198.6 ev]
8.geo-neutrino from U decay (include neutrino oscillation effect) [total : 85 ev]
9.geo-neutrino from Th decay (include neutrino oscillation effect) [total : 21 ev]
6.
7.
[total : 24.8 ev]
2. observed candidate events in KamLAND [total : 2106 ev]
✦ Prompt Energy Spectrum | Plain Text | (8 kB)
‣ Update Log
March 25, 2011 : 1st update
June 4, 2012 : Δχ2 table update. sin2θ13 number of decimals is increased from 3 to 4.
<June 4, 2012 update>