Publications (27)
Calibration of the GERDA experiment
GERDA collaboration, M. Agostini, G. R. Araujo +109
The GERmanium Detector Array (GERDA) collaboration searched for neutrinoless double- decay in Ge with an array of about 40 high-purity isotopically-enriched germanium de…
Probing Majorana neutrinos with double- decay
GERDA collaboration, M. Agostini, A. M. Bakalyarov +111
A discovery that neutrinos are not the usual Dirac but Majorana fermions, i.e. identical to their antiparticles, would be a manifestation of new physics with profound implications…
Search for tri-nucleon decays of Ge in GERDA
GERDA collaboration, M. Agostini, A. Alexander +111
We search for tri-nucleon decays of Ge in the dataset from the GERmanium Detector Array (GERDA) experiment. Decays that populate excited levels of the daughter nucleus above…
Cluster Beam Deposition and in situ Characterization of Carbyne-rich Carbon Films
L. Ravagnan, F. Siviero, C. Lenardi +6
Nanostructured carbon films produced by supersonic cluster beam deposition have been studied by in situ Raman spectroscopy. Raman spectra show the formation of a sp2 solid with a v…
The first search for bosonic super-WIMPs with masses up to 1 MeV/c with GERDA
GERDA collaboration, M. Agostini, A. M. Bakalyarov +106
We present the first search for bosonic super-WIMPs as keV-scale dark matter candidates performed with the GERDA experiment. GERDA is a neutrinoless double-beta decay experiment wh…
Final Results of GERDA on the Two-Neutrino Double- Decay Half-Life of Ge
GERDA collaboration, M. Agostini, A. Alexander +116
We present the measurement of the two-neutrino double- decay rate of Ge performed with the GERDA Phase II experiment. With a subset of the entire GERDA exposure, 11.8 kg…
Searches for new physics below twice the electron mass with GERDA
GERDA Collaboration, M. Agostini, A. Alexander +108
A search for full energy depositions from bosonic keV-scale dark matter candidates of masses between 65 keV and 1021 keV has been performed with data collected during Phase II of t…
An improved limit on the neutrinoless double-electron capture of Ar with GERDA
GERDA Collaboration, M. Agostini, A. Alexander +110
The GERmanium Detector Array (GERDA) experiment operated enriched high-purity germanium detectors in a liquid argon cryostat, which contains 0.33% of Ar, a candidate isotope…
Final Results of GERDA on the Search for Neutrinoless Double- Decay
GERDA collaboration, M. Agostini, G. R. Araujo +112
The GERmanium Detector Array (GERDA) experiment searched for the lepton-number-violating neutrinoless double- () decay of Ge, whose discovery would have far-rea…
Influence of cumulenic chains on the vibrational and electronic properties of sp/sp2 amorphous carbon
L. Ravagnan, P. Piseri, M. Bruzzi +10
We report the production and characterization of a form of amorphous carbon films with sp/sp2 hybridization (atomic fraction of sp hybridized species > 20%) where the predominant s…
LEGEND-1000 Preconceptual Design Report
LEGEND Collaboration, N. Abgrall, I. Abt +261
We propose the construction of LEGEND-1000, the ton-scale Large Enriched Germanium Experiment for Neutrinoless Decay. This international experiment is designed to answer one…
First Results on the Search for Lepton Number Violating Neutrinoless Double Beta Decay with the LEGEND-200 Experiment
H. Acharya, N. Ackermann, M. Agostini +256
The LEGEND collaboration is searching for neutrinoless double beta () decay by operating high-purity germanium detectors enriched in Ge in a low-background liquid a…
Search for exotic physics in double- decays with GERDA Phase II
The GERDA collaboration, M. Agostini, A. Alexander +111
A search for Beyond the Standard Model double- decay modes of Ge has been performed with data collected during the Phase II of the GERmanium Detector Array (GERDA) exper…
Characterization of inverted coaxial Ge detectors in GERDA for future double- decay experiments
GERDA collaboration, M. Agostini, G. R. Araujo +108
Neutrinoless double- decay of Ge is searched for with germanium detectors where source and detector of the decay are identical. For the success of future experiments it…
Time-resolved study of resonant interatomic Coulombic decay in helium nanodroplets
A. C. LaForge, R. Michiels, Y. Ovcharenko +30
When weakly-bound complexes are multiply excited by intense electromagnetic radiation, energy can be exchanged between neighboring atoms through a type of resonant interatomic Coul…
Autoionization dynamics of He nanodroplets resonantly excited by intense XUV laser pulses
Y. Ovcharenko, A. LaForge, B. Langbehn +16
The ionization dynamics of helium droplets in a wide size range from 220 to 10^6 He atoms irradiated with intense femtosecond extreme ultraviolet (XUV) pulses of 10^9 ÷ 10^{12} W/…
Ultrafast relaxation of photoexcited superfluid He nanodroplets
M. Mudrich, A. LaForge, F. Stienkemeier +21
The relaxation of photoexcited nanosystems is a fundamental process of light-matter interaction. Depending on the couplings of the internal degrees of freedom, relaxation can be ul…
Pulse shape analysis in GERDA Phase II
The GERDA collaboration, M. Agostini, G. Araujo +113
The GERmanium Detector Array (GERDA) collaboration searched for neutrinoless double- decay in Ge using isotopically enriched high purity germanium detectors at the Labor…
Time-resolved observation of interatomic Coulombic decay induced by two-photon double excitation of Ne
T. Takanashi, N. V. Golubev, C. Callegari +46
The hitherto unexplored two-photon doubly-excited states [Ne()] were experimentally identified using the seeded, fully coherent, intense extreme ultraviolet…
Fractal analysis of Sampled Profiles: Systematic Study
C. Castelnovo, A. PodestÃ, P. Piseri +1
A quantitative evaluation of the influence of sampling on the numerical fractal analysis of experimental profiles is of critical importance. Although this aspect has been widely re…
Collective Autoionization in Multiply-Excited Systems: A novel ionization process observed in Helium Nanodroplets
A. C. LaForge, M. Drabbels, N. Brauer +19
Free electron lasers (FELs) offer the unprecedented capability to study reaction dynamics and image the structure of complex systems. When multiple photons are absorbed in complex…
Search for the in-situ production of Ge in the GERDA neutrinoless double-beta decay experiment
M. Agostini, A. Alexander, G. Araujo +108
The beta decay of Ge and Ge, both produced by neutron capture on Ge, is a potential background for Germanium based neutrinoless double-beta decay sea…
Leaving the Fullerene Road: Presence and Stability of sp Chains in sp2 Carbon Clusters and Cluster-Assembled Solids
M. Bogana, L. Ravagnan, C. S. Casari +10
We report the experimental and theoretical investigation of the growth and of the structure of large carbon clusters produced in a supersonic expansion by a pulsed microplasma sour…
Low-frequency modes in the Raman spectrum of sp-sp2 nanostructured carbon
C. S. Casari, A. Li Bassi, A. Baserga +8
A novel form of amorphous carbon with sp-sp2 hybridization has been recently produced by supersonic cluster beam deposition showing the presence in the film of both polyynic and cu…
Liquid argon light collection and veto modeling in GERDA Phase II
GERDA collaboration, M. Agostini, A. Alexander +115
The ability to detect liquid argon scintillation light from within a densely packed high-purity germanium detector array allowed the GERDA experiment to reach an exceptionally low…
Energy Calibration and Performance of HPGe Detectors in the LEGEND-200 Experiment
The LEGEND Collaboration, H. Acharya, M. Agostini +259
This paper describes the energy scale procedures and germanium detectors performance in the LEGEND-200 experiment, a critical component for the first unblinding in the search for n…
Neutrinoless Double Beta Decay
C. Adams, K. Alfonso, C. Andreoiu +229
This White Paper, prepared for the Fundamental Symmetries, Neutrons, and Neutrinos Town Meeting related to the 2023 Nuclear Physics Long Range Plan, makes the case for double beta…