We report a study of the CUORE sensitivity to neutrinoless double beta (0νββ) decay. We used a Bayesian analysis based on a toy MonteCarlo (MC) approach to extract the exclusion sensitivity to the 0νββ decay half-life (T 0ν 1/2) at 90% credibility interval (CI) – i.e. the interval containing the true value of T 0ν 1/2 with 90% probability – and the 3 σ discovery sensitivity. We consider various background levels and energy resolutions, and describe the influence of the data division in subsets with different background levels. If the background level and the energy resolution meet the expectation, CUORE will reach a 90% CI exclusion sensitivity of 2 · 1025 year with 3 months, and 9 · 1025 year with 5 years of live time. Under the same conditions, the discovery sensitivity after 3 months and 5 years will be 7 · 1024 year and 4 · 1025 year, respectively.
CUORE sensitivity to nu beta beta Decay 0 ν β β decay
Pagliarone, C. E.
Membro del Collaboration Group
;
2017-01-01
Abstract
We report a study of the CUORE sensitivity to neutrinoless double beta (0νββ) decay. We used a Bayesian analysis based on a toy MonteCarlo (MC) approach to extract the exclusion sensitivity to the 0νββ decay half-life (T 0ν 1/2) at 90% credibility interval (CI) – i.e. the interval containing the true value of T 0ν 1/2 with 90% probability – and the 3 σ discovery sensitivity. We consider various background levels and energy resolutions, and describe the influence of the data division in subsets with different background levels. If the background level and the energy resolution meet the expectation, CUORE will reach a 90% CI exclusion sensitivity of 2 · 1025 year with 3 months, and 9 · 1025 year with 5 years of live time. Under the same conditions, the discovery sensitivity after 3 months and 5 years will be 7 · 1024 year and 4 · 1025 year, respectively.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
