CUORE: a cryogenic underground observatory for rare events

Arnaboldi, C.; Avignone, F. T.; Beeman, J. W.; Barucci, M.; Balata, M.; Brofferio, C.; Bucci, C.; Cebrián, S.; Creswick, R. J.; Capelli, S.; Carbone, L.; Cremonesi, O.; Ward, A. de; Fiorini, E.; Farach, Horácio A.; Frossati, G.; Giuliani, A.; Giugni, D.; Gorla, P.; Häller, E. E.; Irastorza, I.G.; McDonald, R. J.; Morales, A.; Norman, E. B.; Negri, P.; Nucciotti, A.; Pedretti, M.; Pobes, C.; Palmieri, V.; Pavan, M.; Pessina, G.; Pirro, S.; Previtali, E.; Rosenfeld, C.; Smith, A. R.; Sisti, M.; Ventura, G.; Vanzini, M.; Zanotti, L.

doi:10.1016/j.nima.2003.07.067

Cited by 304 publications

(191 citation statements)

References 80 publications

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“…A most stringent constraint on the value of M ee was obtained in the 76 Ge Heidelberg-Moscow experiment [20] |M ee | < 0.35eV. There are large number of projects such as SuperNEMO [21], CUORE [22], CUORICINO [22] and GERDA [23] which aim to achieve a sensitivity below 0.01eV to M ee . Forthcoming experiment SuperNEMO, in particular, will explore M ee < 0.05eV [24].…”

Section: Resultsmentioning

confidence: 99%

Phenomenological analysis of hybrid textures of neutrinos

2010

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We present a comprehensive phenomenological analysis of the allowed hybrid textures of neutrinos. Out of a total of sixty hybrid textures with one equality between the elements of neutrino mass matrix and one texture zero only twenty three are found to be viable at 99% C.L. whereas the earlier analysis found fifty four to be viable. We examine the phenomenological implications of the allowed hybrid textures including Majorana type CP-violating phases, 1-3 mixing angle and Dirac type CP-violating phase, δ. We, also, obtain lower bound on effective Majorana mass for all the allowed hybrid textures.

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Section: Resultsmentioning

confidence: 99%

Phenomenological analysis of hybrid textures of neutrinos

2010

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“…The results reported in [21] will be checked in the currently running and forthcoming NDB experiments. There are a large number of projects such as CUORICINO [23], CUORE [24], GERDA [25], MAJORANA [26], SuperNEMO [27], EXO [28], GENIUS [29] which aim to achieve a sensitivity upto 0.01eV for M ee . Cosmological observations put an upper bound on the sum of neutrino masses…”

Section: Numerical Resultsmentioning

confidence: 99%

Broken S3 symmetry in the neutrino mass matrix and non-zero θ13

2012

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We study the effects of breaking S 3 symmetry in the neutrino mass matrix for the masses and mixing matrix of neutrinos. At zeroth order the model gives degenerate neutrino masses and accommodates tribimaximal mixing. We introduce perturbations in terms of a small and complex parameter. The perturbations are introduced in a manner such that the S 3 symmetry is broken by its elements in the same representation. Successive perturbations introduce mass splitting, sizable non-zero reactor mixing angle and CP violation. This scheme of breaking S 3 symmetry can reproduce a relatively large reactor mixing angle as suggested by the recent T2K results. The effective neutrino mass is predicted to be large which is testable in the ongoing and forthcoming neutrinoless double beta decay experiments. IntroductionAfter the discovery of neutrino oscillations, there has been considerable progress in determining the values of the neutrino mass-squared differences and the mixing angles which relate the neutrino mass eigenstates to the flavor eigenstates. Recently, T2K [1], MINOS [2] and Double Chooz [3] experiments have given hints of a relatively large 1-3 mixing angle. This has given a fresh impetus to the construction of neutrino mass models which can accommodate a non-zero value of θ 13 . Recently many papers have appeared which reproduce the * dev5703@yahoo.com †

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“…Neutron Transmutation Doped (NTD) Ge thermistors have been widely used as low temperature sensors (in mK range) for bolometric detectors in dark matter searches and neutrino physics [1,2]. Compared to the conventional metallurgical methods, neutron transmutation doping yields good uniformity and is found to show good reproducibility [3,4].…”

Section: Introductionmentioning

confidence: 99%

Study of radioactive impurities in neutron transmutation doped germanium

Mathimalar

Dokania

Singh

et al. 2015

Nuclear Instruments and Methods in Physics Research Section A:

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A program to develop low temperature (mK) sensors with neutron transmutation doped Ge for rare event studies with a cryogenic bolometer has been initiated. For this purpose, semiconductor grade Ge wafers are irradiated with thermal neutron flux from Dhruva reactor at Bhabha Atomic Research Centre (BARC), Mumbai. Spectroscopic studies of irradiated samples have revealed that the environment of the capsule used for irradiating the sample leads to significant levels of 65 Zn, 110m Ag and 182 Ta impurities, which can be reduced by chemical etching of approximately ∼ 50 µm thick surface layer. From measurements of the etched samples in the low background counting setup, activity due to trace impurities of 123 Sb in bulk Ge is estimated to be ∼ 1 Bq/g after irradiation. These estimates indicate that in order to use the NTD Ge sensors for rare event studies, a cooldown period of ∼ 2 years would be necessary to reduce the radioactive background to ≤ 1 mBq/g.

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CUORE: a cryogenic underground observatory for rare events

Cited by 304 publications

References 80 publications

Phenomenological analysis of hybrid textures of neutrinos

Phenomenological analysis of hybrid textures of neutrinos

Broken S3 symmetry in the neutrino mass matrix and non-zero θ13

Study of radioactive impurities in neutron transmutation doped germanium

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