Silvia Capelli

University of Milano-Bicocca

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University of Milano-Bicocca

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High Energy Physics

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Silvia Capelli has a total of 705 co-authors. Here are the top co-authors by number of shared publications:

Maura Pavan
Dipartimento di Fisica, Università di Milano-Bicocca, Milano I-20126 - Italy
69 shared publications
Stefano Pirro
INFN Laboratori Nazionali del Gran Sasso
64 shared publications
Angelo Nucciotti
Dipartimento di Fisica, Università di Milano-Bicocca, Milano, Italy
60 shared publications
Monica Sisti
INFN, Sezione di Milano Bicocca e Dipartimento di Fisica, Università di Milano Bicocca, Milan
60 shared publications
Gianluigi Pessina
Istituto Nazionale di Fisica Nucleare Sezione di Milano Bicocca
58 shared publications
E. Previtali
56 shared publications

Latest Publications

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- 1 July 2026
- Published by IOP Publishing in Journal of Cosmology and Astroparticle Physics
Search for sterile neutrinos with CUPID-0
by O. Azzolini, J.W. Beeman, F. Bellini, M. Beretta, M. Biassoni, C. Brofferio, C. Bucci, S. Capelli, V. Caracciolo, L. Cardani, et al.
Sterile neutrinos are well-motivated extensions of the Standard Model, introduced to address fundamental questions such as the origin of neutrino masses and the nature of dark matter. Exploiting the precise data reconstruction achieved by the CUPID-0 experiment, we searched for spectral distortions in the double β-decay of ⁸²Se compatible with the emission of a sterile neutrino. The analysis relies on the construction of a detailed background model down to 200 keV, enabling an accurate characterization of the main sources of contamination. Using a Zn⁸²Se exposure of 9.95 kg·yr, we explored sterile neutrino mass hypotheses between 0.5 MeV and 1.5 MeV. No evidence for a signal was observed in any scenario; therefore, we derived 90% C.I. upper limits on the active-sterile mixing probability sin² θ, obtaining the most stringent bound, sin² θ < 8 × 10^-3, for a sterile neutrino mass of 0.7 MeV.
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- 1 July 2026
- Published by IOP Publishing in Journal of Cosmology and Astroparticle Physics
Open Access
Search for sterile neutrinos with CUPID-0
by O. Azzolini, J.W. Beeman, F. Bellini, M. Beretta, M. Biassoni, C. Brofferio, C. Bucci, S. Capelli, V. Caracciolo, L. Cardani, et al.
Sterile neutrinos are well-motivated extensions of the Standard Model, introduced to address fundamental questions such as the origin of neutrino masses and the nature of dark matter. Exploiting the precise data reconstruction achieved by the CUPID-0 experiment, we searched for spectral distortions in the double β-decay of ⁸²Se compatible with the emission of a sterile neutrino. The analysis relies on the construction of a detailed background model down to 200 keV, enabling an accurate characterization of the main sources of contamination. Using a Zn⁸²Se exposure of 9.95 kg·yr, we explored sterile neutrino mass hypotheses between 0.5 MeV and 1.5 MeV. No evidence for a signal was observed in any scenario; therefore, we derived 90% C.I. upper limits on the active-sterile mixing probability sin² θ, obtaining the most stringent bound, sin² θ < 8 × 10^-3, for a sterile neutrino mass of 0.7 MeV.
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Cited by 13
- 1 November 2021
- Published by Elsevier in Physics Letters B
Measurement of 216Po half-life with the CUPID-0 experiment
by O. Azzolini, J.W. Beeman, F. Bellini, M. Beretta, M. Biassoni, C. Brofferio, C. Bucci, S. Capelli, L. Cardani, P. Carniti, et al.
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- 1 November 2021
- Published by Elsevier in Physics Letters B
Open Access
Measurement of 216Po half-life with the CUPID-0 experiment
by O. Azzolini, J.W. Beeman, F. Bellini, M. Beretta, M. Biassoni, C. Brofferio, C. Bucci, S. Capelli, L. Cardani, P. Carniti, et al.
Cited by 13
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Cited by 21
- 24 September 2019
- Published by Springer Nature in The European Physical Journal C
Double-beta decay of $^{130}\hbox {Te}$ to the first $0^+$ excited state of $^{130}\hbox {Xe}$ with CUORE-0
by C. Alduino, K. Alfonso, D. R. Artusa, F. T. Avignone Iii, O. Azzolini, T. I. Banks, G. Bari, J. W. Beeman, F. Bellini, A. Bersani, et al.
We report on a search for double beta decay of $$^{130}\hbox {Te}$$ $^{130} Te$ to the first $$0^{+}$$ $0^{+}$ excited state of $$^{130}\hbox {Xe}$$ $^{130} Xe$ using a $$9.8\,\hbox {kg}\cdot \hbox {yr}$$ $9.8 kg \cdot yr$ exposure of $$^{130}\hbox {Te}$$ $^{130} Te$ collected with the CUORE-0 experiment. In this work we exploit different topologies of coincident events to search for both the neutrinoless and two-neutrino double beta decay modes. We find no evidence for either mode and place lower bounds on the half-lives: $$T^{0\nu }_{0^+_1}>7.9\cdot 10^{23}\hbox {yr}$$ $T_{0_{1}^{+}}^{0 ν} > 7.9 \cdot 10^{23} yr$ and $$T^{2\nu }_{0^+_1}>2.4\cdot 10^{23}\hbox {yr}$$ $T_{0_{1}^{+}}^{2 ν} > 2.4 \cdot 10^{23} yr$ ( $$90\%\,\hbox {CL}$$ $90 % CL$ ). Combining our results with those obtained by the CUORICINO experiment, we achieve the most stringent constraints available for these processes: $$T^{0\nu }_{0^+_1}>1.4\cdot 10^{24}\hbox {yr}$$ $T_{0_{1}^{+}}^{0 ν} > 1.4 \cdot 10^{24} yr$ and $$T^{2\nu }_{0^+_1}>2.5\cdot 10^{23}\hbox {yr}$$ $T_{0_{1}^{+}}^{2 ν} > 2.5 \cdot 10^{23} yr$ ( $$90\%\,\hbox {CL}$$ $90 % CL$ ).
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- 24 September 2019
- Published by Springer Nature in The European Physical Journal C
Open Access
Double-beta decay of $^{130}\hbox {Te}$ to the first $0^+$ excited state of $^{130}\hbox {Xe}$ with CUORE-0
by C. Alduino, K. Alfonso, D. R. Artusa, F. T. Avignone Iii, O. Azzolini, T. I. Banks, G. Bari, J. W. Beeman, F. Bellini, A. Bersani, et al.
We report on a search for double beta decay of $$^{130}\hbox {Te}$$ $^{130} Te$ to the first $$0^{+}$$ $0^{+}$ excited state of $$^{130}\hbox {Xe}$$ $^{130} Xe$ using a $$9.8\,\hbox {kg}\cdot \hbox {yr}$$ $9.8 kg \cdot yr$ exposure of $$^{130}\hbox {Te}$$ $^{130} Te$ collected with the CUORE-0 experiment. In this work we exploit different topologies of coincident events to search for both the neutrinoless and two-neutrino double beta decay modes. We find no evidence for either mode and place lower bounds on the half-lives: $$T^{0\nu }_{0^+_1}>7.9\cdot 10^{23}\hbox {yr}$$ $T_{0_{1}^{+}}^{0 ν} > 7.9 \cdot 10^{23} yr$ and $$T^{2\nu }_{0^+_1}>2.4\cdot 10^{23}\hbox {yr}$$ $T_{0_{1}^{+}}^{2 ν} > 2.4 \cdot 10^{23} yr$ ( $$90\%\,\hbox {CL}$$ $90 % CL$ ). Combining our results with those obtained by the CUORICINO experiment, we achieve the most stringent constraints available for these processes: $$T^{0\nu }_{0^+_1}>1.4\cdot 10^{24}\hbox {yr}$$ $T_{0_{1}^{+}}^{0 ν} > 1.4 \cdot 10^{24} yr$ and $$T^{2\nu }_{0^+_1}>2.5\cdot 10^{23}\hbox {yr}$$ $T_{0_{1}^{+}}^{2 ν} > 2.5 \cdot 10^{23} yr$ ( $$90\%\,\hbox {CL}$$ $90 % CL$ ).
Cited by 21
Open Access
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Cited by 7
- 2 January 2019
- Published by MDPI AG in Universe
Results from the Cuore Experiment ^†
by Alessio Caminata, Douglas Adams, Chris Alduino, Krystal Alfonso, Frank Avignone, Oscar Azzolini, Giacomo Bari, Fabio Bellini, Giovanni Benato, Andrea Bersani, et al.
The Cryogenic Underground Observatory for Rare Events (CUORE) is the first bolometric experiment searching for neutrinoless double beta decay that has been able to reach the 1-ton scale. The detector consists of an array of 988 ${TeO}_{2}$ crystals arranged in a cylindrical compact structure of 19 towers, each of them made of 52 crystals. The construction of the experiment was completed in August 2016 and the data taking started in spring 2017 after a period of commissioning and tests. In this work we present the neutrinoless double beta decay results of CUORE from examining a total ${TeO}_{2}$ exposure of $86.3 kg yr$ , characterized by an effective energy resolution of 7.7 keV FWHM and a background in the region of interest of $0.014$ $counts / (keV kg yr)$ . In this physics run, CUORE placed a lower limit on the decay half-life of neutrinoless double beta decay of $^{130} Te > 1.3 \cdot 10^{25}$ yr (90% C.L.). Moreover, an analysis of the background of the experiment is presented as well as the measurement of the $^{130}$ Te 2 $ν β β$ decay with a resulting half-life of $T_{1 / 2}^{2 ν} = [7.9 \pm 0.1 (stat .) \pm 0.2 (syst .)] \times 10^{20}$ yr which is the most precise measurement of the half-life and compatible with previous results.
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- 2 January 2019
- Published by MDPI AG in Universe
Open Access
Results from the Cuore Experiment ^†
by Alessio Caminata, Douglas Adams, Chris Alduino, Krystal Alfonso, Frank Avignone, Oscar Azzolini, Giacomo Bari, Fabio Bellini, Giovanni Benato, Andrea Bersani, et al.
The Cryogenic Underground Observatory for Rare Events (CUORE) is the first bolometric experiment searching for neutrinoless double beta decay that has been able to reach the 1-ton scale. The detector consists of an array of 988 ${TeO}_{2}$ crystals arranged in a cylindrical compact structure of 19 towers, each of them made of 52 crystals. The construction of the experiment was completed in August 2016 and the data taking started in spring 2017 after a period of commissioning and tests. In this work we present the neutrinoless double beta decay results of CUORE from examining a total ${TeO}_{2}$ exposure of $86.3 kg yr$ , characterized by an effective energy resolution of 7.7 keV FWHM and a background in the region of interest of $0.014$ $counts / (keV kg yr)$ . In this physics run, CUORE placed a lower limit on the decay half-life of neutrinoless double beta decay of $^{130} Te > 1.3 \cdot 10^{25}$ yr (90% C.L.). Moreover, an analysis of the background of the experiment is presented as well as the measurement of the $^{130}$ Te 2 $ν β β$ decay with a resulting half-life of $T_{1 / 2}^{2 ν} = [7.9 \pm 0.1 (stat .) \pm 0.2 (syst .)] \times 10^{20}$ yr which is the most precise measurement of the half-life and compatible with previous results.
Cited by 7
Open Access
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- 22 December 2018
- Published by MDPI AG in Universe
Result on the Neutrinoless Double Beta Decay Search of ⁸²Se with the CUPID-0 Experiment
by Fabio Bellini, Oscar Azzolini, Maria Teresa Barrera, Jeffrey Beeman, Mattia Beretta, Matteo Biassoni, Chiara Brofferio, Carlo Bucci, Lucia Canonica, Silvia Capelli, et al.
CUPID-0 is the first large array of scintillating Zn $^{82}$ Se cryogenic calorimeters (bolometers) implementing particle identification for the search of the neutrinoless double beta decay (0 $ν β β$ ). The detector consists of 24 enriched Zn $^{82}$ Se bolometers for a total $^{82}$ Se mass of 5.28 kg and it has been taking data in the underground LNGS (Italy) since March 2017. In this article we show how the dual read-out provides a powerful tool for the $α$ particles rejection. The simultaneous use of the heat and light information allows us to reduce the background down to (3.2 $_{- 1.1}^{+ 1.3}$ )×10 $^{- 3}$ counts/(keV kg year), an unprecedented level for cryogenic calorimeters. In a total exposure of 5.46 kg year Zn $^{82}$ Se we set the most stringent limit on the 0 $ν β β$ decay $^{82}$ Se half-life $T_{1 / 2}^{0 ν} > 4.0 \times 10^{24}$ year at 90% C.I.
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- 22 December 2018
- Published by MDPI AG in Universe
Open Access
Result on the Neutrinoless Double Beta Decay Search of ⁸²Se with the CUPID-0 Experiment
by Fabio Bellini, Oscar Azzolini, Maria Teresa Barrera, Jeffrey Beeman, Mattia Beretta, Matteo Biassoni, Chiara Brofferio, Carlo Bucci, Lucia Canonica, Silvia Capelli, et al.
CUPID-0 is the first large array of scintillating Zn $^{82}$ Se cryogenic calorimeters (bolometers) implementing particle identification for the search of the neutrinoless double beta decay (0 $ν β β$ ). The detector consists of 24 enriched Zn $^{82}$ Se bolometers for a total $^{82}$ Se mass of 5.28 kg and it has been taking data in the underground LNGS (Italy) since March 2017. In this article we show how the dual read-out provides a powerful tool for the $α$ particles rejection. The simultaneous use of the heat and light information allows us to reduce the background down to (3.2 $_{- 1.1}^{+ 1.3}$ )×10 $^{- 3}$ counts/(keV kg year), an unprecedented level for cryogenic calorimeters. In a total exposure of 5.46 kg year Zn $^{82}$ Se we set the most stringent limit on the 0 $ν β β$ decay $^{82}$ Se half-life $T_{1 / 2}^{0 ν} > 4.0 \times 10^{24}$ year at 90% C.I.
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- 4 April 2018
- Published by Sissa Medialab Srl
The commissioning of the CUORE experiment: the mini-tower run
by Simone Copello, Christopher Alduino, Krystal Alfonso, Frank T. Avignone Iii, Oscar Azzolini, Giacomo Bari, Fabio Bellini, Giovanni Benato, Andrea Bersani, Matteo Biassoni, et al.
CUORE is a ton-scale experiment approaching the data taking phase in Gran Sasso National Laboratory. Its primary goal is to search for the neutrinoless double-beta decay in Te-130 using 988 crystals of tellurim dioxide. The crystals are operated as bolometers at about 10 mK taking advantage of one of the largest dilution cryostat ever built. Concluded in March 2016, the cryostat commissioning consisted in a sequence of cool down runs each one integrating new parts of the apparatus. The last run was performed with the fully configured cryostat and the thermal load at 4 K reached the impressive mass of about 14 tons. During that run the base temperature of 6.3 mK was reached and maintained for more than 70 days. An array of 8 crystals, called mini-tower, was used to check bolometers operation, readout electronics and DAQ. Results will be presented in terms of cooling power, electronic noise, energy resolution and preliminary background measurements.
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- 4 April 2018
- Published by Sissa Medialab Srl
Open Access
The commissioning of the CUORE experiment: the mini-tower run
by Simone Copello, Christopher Alduino, Krystal Alfonso, Frank T. Avignone Iii, Oscar Azzolini, Giacomo Bari, Fabio Bellini, Giovanni Benato, Andrea Bersani, Matteo Biassoni, et al.
CUORE is a ton-scale experiment approaching the data taking phase in Gran Sasso National Laboratory. Its primary goal is to search for the neutrinoless double-beta decay in Te-130 using 988 crystals of tellurim dioxide. The crystals are operated as bolometers at about 10 mK taking advantage of one of the largest dilution cryostat ever built. Concluded in March 2016, the cryostat commissioning consisted in a sequence of cool down runs each one integrating new parts of the apparatus. The last run was performed with the fully configured cryostat and the thermal load at 4 K reached the impressive mass of about 14 tons. During that run the base temperature of 6.3 mK was reached and maintained for more than 70 days. An array of 8 crystals, called mini-tower, was used to check bolometers operation, readout electronics and DAQ. Results will be presented in terms of cooling power, electronic noise, energy resolution and preliminary background measurements.
Open Access
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- 24 February 2018
- Published by Sissa Medialab Srl
CUORE: first results and prospects
by Valentina Novati, Christopher Alduino, Krystal Alfonso, Frank T. Avignone Iii, Oscar Azzolini, Giacomo Bari, Fabio Bellini, Giovanni Benato, Andrea Bersani, Matteo Biassoni, et al.
CUORE is the first bolometric tonne-scale experiment aiming at the investigation of neutrinoless double-beta (0$\nu$2$\beta$) decay of $^{130}$Te. The cryogenic commissioning followed by the detector installation and cool down took place during 2016. After the optimisation of all the detectors, the data-taking started in spring 2017. We report about the results of the first dataset acquired in May, which led to a limit on the 0$\nu$2$\beta$ half-life of $^{130}$Te of 6.6$\times$10$^{24}$ yr. An upgrade of CUORE, named CUPID, is planned to improve the 0$\nu$2$\beta$-decay sensitivity via passive and active background reduction and crystal enrichment. Some technologies for CUPID are currently under study and two of them are presented here, involving the detection of Cherenkov and scintillation light emitted by enriched $^{130}$TeO$_2$ and Li$^{100}_2$MoO$_4$ crystals respectively. This will allow us to reject the currently dominant a background.
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- 24 February 2018
- Published by Sissa Medialab Srl
Open Access
CUORE: first results and prospects
by Valentina Novati, Christopher Alduino, Krystal Alfonso, Frank T. Avignone Iii, Oscar Azzolini, Giacomo Bari, Fabio Bellini, Giovanni Benato, Andrea Bersani, Matteo Biassoni, et al.
CUORE is the first bolometric tonne-scale experiment aiming at the investigation of neutrinoless double-beta (0$\nu$2$\beta$) decay of $^{130}$Te. The cryogenic commissioning followed by the detector installation and cool down took place during 2016. After the optimisation of all the detectors, the data-taking started in spring 2017. We report about the results of the first dataset acquired in May, which led to a limit on the 0$\nu$2$\beta$ half-life of $^{130}$Te of 6.6$\times$10$^{24}$ yr. An upgrade of CUORE, named CUPID, is planned to improve the 0$\nu$2$\beta$-decay sensitivity via passive and active background reduction and crystal enrichment. Some technologies for CUPID are currently under study and two of them are presented here, involving the detection of Cherenkov and scintillation light emitted by enriched $^{130}$TeO$_2$ and Li$^{100}_2$MoO$_4$ crystals respectively. This will allow us to reject the currently dominant a background.
Open Access
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Cited by 4
- 1 February 2017
- Published by IOP Publishing in Journal of Instrumentation
The CUORE cryostat and its bolometric detector
by D. Santone, C. Alduino, K. Alfonso, D.R. Artusa, F.T. Avignone Iii, O. Azzolini, T.I. Banks, G. Bari, J.W. Beeman, F. Bellini, et al.
CUORE is a cryogenic detector that will be operated at LNGS to search for neutrinoless double beta decay (0νββ) of ¹³⁰Te. The detector installation was completed in summer 2016. Before the installation, several cold runs were done to test the cryogenic system performance. In the last cold run the base temperature of 6.3 mK was reached in stable condition. CUORE-0, a CUORE prototype, has proven the feasibility of CUORE, demonstrating that the target background of 0.01 counts/keV/kg/y and the energy resolution of 5 keV are within reach.
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- 1 February 2017
- Published by IOP Publishing in Journal of Instrumentation
Open Access
The CUORE cryostat and its bolometric detector
by D. Santone, C. Alduino, K. Alfonso, D.R. Artusa, F.T. Avignone Iii, O. Azzolini, T.I. Banks, G. Bari, J.W. Beeman, F. Bellini, et al.
CUORE is a cryogenic detector that will be operated at LNGS to search for neutrinoless double beta decay (0νββ) of ¹³⁰Te. The detector installation was completed in summer 2016. Before the installation, several cold runs were done to test the cryogenic system performance. In the last cold run the base temperature of 6.3 mK was reached in stable condition. CUORE-0, a CUORE prototype, has proven the feasibility of CUORE, demonstrating that the target background of 0.01 counts/keV/kg/y and the energy resolution of 5 keV are within reach.
Cited by 4
Open Access
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Cited by 6
- 1 February 2017
- Published by Elsevier in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Scintillating bolometric technique for the neutrino-less double beta decay search: The LUCIFER/CUPID-0 experiment
by N. Casali, D.R. Artusa, F. Bellini, M. Biassoni, C. Brofferio, C. Bucci, A. Camacho, S. Capelli, L. Cardani, P. Carniti, et al.
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- 1 February 2017
- Published by Elsevier in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Open Access
Scintillating bolometric technique for the neutrino-less double beta decay search: The LUCIFER/CUPID-0 experiment
by N. Casali, D.R. Artusa, F. Bellini, M. Biassoni, C. Brofferio, C. Bucci, A. Camacho, S. Capelli, L. Cardani, P. Carniti, et al.
Cited by 6
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Cited by 25
- 6 October 2015
- Published by Springer Nature in The European Physical Journal C
Large area Si low-temperature light detectors with Neganov–Luke effect
by M. Biassoni, C. Brofferio, S. Capelli, L. Cassina, M. Clemenza, O. Cremonesi, M. Faverzani, E. Ferri, A. Giachero, L. Gironi, et al.
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- 6 October 2015
- Published by Springer Nature in The European Physical Journal C
Open Access
Large area Si low-temperature light detectors with Neganov–Luke effect
by M. Biassoni, C. Brofferio, S. Capelli, L. Cassina, M. Clemenza, O. Cremonesi, M. Faverzani, E. Ferri, A. Giachero, L. Gironi, et al.
Cited by 25

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