The Czech Republic and JINR. Long-Term Fruitful

task is the reconstruction of muon tracks, antineutrino energy reconstruction and detector
calibration.
Special issue is the extension of the physics program of the Daya Bay experiment. In
addition to the primary goal of precision θ13 measurement, the Daya Bay data can contribute
to the understanding of neutrino mass hierarchies and possible non-standard neutrino
interactions. The investigation of the Daya Bay sensitivities for these areas is performed by
JINR and Charles University groups in collaboration with Prof. S.Bilenky.
For coordination of the efforts mentioned above, the joint software and data analysis
meetings of JINR and Charles University groups are organized. In June 2010 the meeting was
organized in Prague by Charles University (chair – Prof. R.Leitner).
The collaboration of JINR and Charles University in the Daya Bay experiment allows
consolidating individual efforts and making common contribution and role of the groups more
essential and visible.
Within the DLNP group, physicists of IEAP, Czech Technical University in Prague,
Charles University (Faculty of Mathematics and Physics) participate in the ambitious neutrino
physics project NEMO-3 [1-15].
The NEMO apparatus in open (left) and closed running (right) forms
The NEMO-3 detector is located deep underground in the Modane Underground
Laboratory (LSM, France, 4800 m.w.e.), which is one of the best places in the world from
the point of view of the suppression of the cosmic ray background.
The experiment is searching for neutrinoless double-beta decay (����):
N(A,Z) � N(A,Z+2) + 2e - ,
which is a famous indication of new fundamental physics beyond the Standard Model such as
the absolute neutrino mass scale, lepton flavor violation and the nature of neutrino (either
Dirac or Majorana).
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