Status and Perspectives on Rare Decay Searches in Tellurium Isotopes

Campani, A.; Dompè, V.; Fantini, G.

doi:10.3390/universe7070212

Cited by 8 publications

(6 citation statements)

References 123 publications

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“…The ton-scale mass and low background level of CUORE make it suitable for the investigation of other rare events, among which is the search for 0 decay of 128 Te [6]. With its natural isotopic abundance of 31.75% [7], this tellurium isotope is characterized by one of the highest natural abundances among the nuclei that can undergo 0 decay, together with 130 Te : this feature makes it an attractive candidate for the 0 decay search.…”

Section: Te Neutrinoless Double Beta Decay Search With Cuorementioning

confidence: 99%

Expected sensitivity to 128Te neutrinoless double beta decay with the CUORE TeO2 cryogenic bolometers

et al. 2022

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The CUORE experiment is a ton-scale array of $$\hbox {TeO}_2$$ TeO 2 cryogenic bolometers located at the underground Laboratori Nazionali del Gran Sasso of Istituto Nazionale di Fisica Nucleare (INFN), in Italy. The CUORE detector consists of 988 crystals operated as source and detector at a base temperature of $$\sim 10$$ ∼ 10 mK. Such cryogenic temperature is reached and maintained by means of a custom built cryogen-free dilution cryostat, designed with the aim of minimizing the vibrational noise and the environmental radioactivity. The primary goal of CUORE is the search for neutrinoless double beta decay of $$^{130}\hbox {Te}$$ 130 Te , but thanks to its large target mass and ultra-low background it is suitable for the study of other rare processes as well, such as the neutrinoless double beta decay of $$^{128}\hbox {Te}$$ 128 Te . This tellurium isotope is an attractive candidate for the search of this process, due to its high natural isotopic abundance of 31.75%. The transition energy at (866.7 ± 0.7) keV lies in a highly populated region of the energy spectrum, dominated by the contribution of the two-neutrino double beta decay of $$^{130}\hbox {Te}$$ 130 Te . As the first ton-scale infrastructure operating cryogenic $$\hbox {TeO}_2$$ TeO 2 bolometers in stable conditions, CUORE is able to achieve a factor $$>10$$ > 10 higher sensitivity to the neutrinoless double beta decay of this isotope with respect to past direct experiments.

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Section: Te Neutrinoless Double Beta Decay Search With Cuorementioning

confidence: 99%

Expected sensitivity to 128Te neutrinoless double beta decay with the CUORE TeO2 cryogenic bolometers

et al. 2022

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“…In this work, we describe a search for neutrinoless positron emitting electron capture decay (0νβ + EC) of 120 Te with CUORE, an array of TeO 2 crystals operated as cryogenic detectors at the Laboratori Nazionali del Gran Sasso in central Italy. The primary goal of the experiment is the search for 0νββ decay of 130 Te [15], but the use of tellurium with natural isotopic composition allows us to search for other rare decays [16], such as double beta decay in 128 Te [17] and, indeed, 120 Te. 120 Te has a natural isotopic abundance of 0.09(1)% [18] and could potentially decay to 120 Sn via 0νECEC and * Deceased 0νβ + EC.…”

Section: Introductionmentioning

confidence: 99%

Search for Neutrinoless $β^+EC$ Decay of $^{120}$Te with CUORE

Adams,

Alduino,

Alfonso

et al. 2022

Preprint

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CUORE is a large scale cryogenic experiment searching for neutrinoless double beta decay (0νββ) in 130 Te. The CUORE detector is made of natural tellurium, providing the possibility of rare event searches on isotopes other than 130 Te. In this work we describe a search for neutrinoless positron emitting electron capture (β + EC) decay in 120 Te with a total TeO2 exposure of 355.7 kg • yr, corresponding to 0.2405 kg • yr of 120 Te. Albeit 0νβ − β − with two final state electrons represents

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“…Dielectric and diamagnetic crystals, where the source is embedded in the detector, are cooled down to ∼ 10 mK temperature and equipped with temperature sensors such as neutron transmutation doped (NTD) Ge thermistors to detect the temperature rise due to nuclear decays within the crystal lattice. The CUORE experiment is the largest experiment using this technique, currently taking data at the INFN Laboratori Nazionali del Gran Sasso, Italy is a tonne scale cryogenic calorimeter array of TeO 2 crystals able to achieve a 0.3% energy resolution at 𝑄 𝛽𝛽 and a background in the region of interest of the order of 10 counts/(keV × tonne × yr) [3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Latest results from CUPID-0

Fantini¹,

O.²,

Beeman³

et al. 2022

Proceedings of 41st International Conference on High Energy Physics — PoS(ICHEP2022)

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CUPID-0 is a pilot experiment in scintillating cryogenic calorimetry for the search of neutrino-less double beta decay. 26 ZnSe crystals were operated continuously in the first project phase (March 2017 -December 2018), demonstrating unprecedented low levels of background in the region of interest at the Q-value of 82 Se. From this successful experience comes a demonstration of full alpha to beta/gamma background separation, the most stringent limits on the 82 Se neutrino-less double beta decay, as well as the most precise measurement of the 82 Se half-life. After a detector upgrade, CUPID-0 began its second and last phase (June 2019 -February 2020). We present the latest results on the neutrino-less double beta decay of 82 Se with the full isotope exposure of 8.82 kg × yr. We set a lower bound to the ground state half life T 1/2 ( 82 Se) > 4.6 × 10 24 yr (90% C.I.). We review the most recent results from a Bayesian search for spectral distortions to the 82 Se double-beta decay spectrum due to exotic decay modes.

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Status and Perspectives on Rare Decay Searches in Tellurium Isotopes

Cited by 8 publications

References 123 publications

Expected sensitivity to 128Te neutrinoless double beta decay with the CUORE TeO2 cryogenic bolometers

Expected sensitivity to 128Te neutrinoless double beta decay with the CUORE TeO2 cryogenic bolometers

Search for Neutrinoless $β^+EC$ Decay of $^{120}$Te with CUORE

Latest results from CUPID-0

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