talk - International Workshop on Double Beta Decay and Neutrino
talk - International Workshop on Double Beta Decay and Neutrino
talk - International Workshop on Double Beta Decay and Neutrino
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data reducti<strong>on</strong> <strong>and</strong> signal extracti<strong>on</strong><br />
14<br />
C<br />
210<br />
Po<br />
750 days of data with<br />
100t<strong>on</strong> norm.<br />
MC; signal + intrinsic BG<br />
FV cut<br />
soft α/β cut<br />
mu<strong>on</strong> <strong>and</strong> daughter<br />
11<br />
C<br />
No cut<br />
7<br />
Be+ 85 Kr<br />
ext.bkg<br />
• A spectral fit is applied including the following signal + all intrinsic<br />
background comp<strong>on</strong>ents.<br />
– 7 Be, 85 Kr, 14 C, 11 C<br />
– 210 Bi (very similar to CNO in this limited energy regi<strong>on</strong>)<br />
– pp, pep, 8 B, <strong>and</strong> CNO neutrinos fixed at SSM-LMA value<br />
• Fit with <strong>and</strong> without statistical subtracti<strong>on</strong> of 210 Po events, based <strong>on</strong> α/β<br />
pulse shape discriminati<strong>on</strong>.<br />
• Two independent methods (MC based <strong>and</strong> analytical) were applied.<br />
Andrea Pocar - DBD11 - November 15, 2011<br />
15
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