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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-reachin…
Modeling of GERDA Phase II data
GERDA collaboration, Matteo Agostini, Alexander M. Bakalyarov +107
The GERmanium Detector Array (GERDA) experiment at the Gran Sasso underground laboratory (LNGS) of INFN is searching for neutrinoless double-beta () decay of Ge. The t…
Improved limit on neutrinoless double beta decay of Ge from GERDA Phase II
M. Agostini, A. M. Bakalyarov, M. Balata +105
The GERDA experiment searches for the lepton number violating neutrinoless double beta decay of Ge (Ge Se + 2e) operating bare Ge diodes with…
Background free search for neutrinoless double beta decay with GERDA Phase II
M. Agostini, M. Allardt, A. M. Bakalyarov +113
The Standard Model of particle physics cannot explain the dominance of matter over anti-matter in our Universe. In many model extensions this is a very natural consequence of neutr…
Direct measurement of low-energy Ne(p,)Na resonances
R. Depalo, F. Cavanna, M. Aliotta +30
The Ne(p,)Na reaction is the most uncertain process in the neon-sodium cycle of hydrogen burning. At temperatures relevant for nucleosynthesis in asymptotic giant…
Improved Direct Measurement of the 64.5 keV Resonance Strength in the 17O(p,a)14N Reaction at LUNA
C. G. Bruno, D. A. Scott, M. Aliotta +32
The O(p,)N reaction plays a key role in various astrophysical scenarios, from asymptotic giant branch stars to classical novae. It affects the synthesis of rare is…
Limit on the Radiative Neutrinoless Double Electron Capture of Ar from GERDA Phase I
M. Agostini, M. Allardt, A. M. Bakalyarov +115
Neutrinoless double electron capture is a process that, if detected, would give evidence of lepton number violation and the Majorana nature of neutrinos. A search for neutrinoless…
Three new low-energy resonances in the Ne(p,)Na reaction
F. Cavanna, R. Depalo, M. Aliotta +31
The Ne(p,)Na reaction takes part in the neon-sodium cycle of hydrogen burning. This cycle affects the synthesis of the elements between Ne and Al in…
Results on decay with emission of two neutrinos or Majorons in Ge from GERDA Phase I
M. Agostini, M. Allardt, A. M. Bakalyarov +109
A search for neutrinoless decay processes accompanied with Majoron emission has been performed using data collected during Phase I of the GERmanium Detector Array (GERDA) expe…
Results on neutrinoless double beta decay of 76Ge from GERDA Phase I
M. Agostini, M. Allardt, E. Andreotti +112
Neutrinoless double beta decay is a process that violates lepton number conservation. It is predicted to occur in extensions of the Standard Model of particle physics. This Letter…
Neutron-induced background by an alpha-beam incident on a deuterium gas target and its implications for the study of the 2H(alpha,gamma)6Li reaction at LUNA
M. Anders, D. Trezzi, A. Bellini +26
The production of the stable isotope Li-6 in standard Big Bang nucleosynthesis has recently attracted much interest. Recent observations in metal-poor stars suggest that a cosmolog…
Measurement of the half-life of the two-neutrino double beta decay of Ge-76 with the Gerda experiment
GERDA Collaboration, M. Agostini, M. Allardt +110
The primary goal of the GERmanium Detector Array (Gerda) experiment at the Laboratori Nazionali del Gran Sasso of INFN is the search for the neutrinoless double beta decay of Ge-76…
The 14N(p,gamma)15O reaction studied with a composite germanium detector
M. Marta, A. Formicola, D. Bemmerer +26
The rate of the carbon-nitrogen-oxygen (CNO) cycle of hydrogen burning is controlled by the 14N(p,gamma)15O reaction. The reaction proceeds by capture to the ground states and seve…
Constraining the S factor of 15N(p,g)16O at Astrophysical Energies
P. J. LeBlanc, G. Imbriani, J. Goerres +44
The 15N(p,g)16O reaction represents a break out reaction linking the first and second cycle of the CNO cycles redistributing the carbon and nitrogen abundances into the oxygen rang…
New experimental study of low-energy (p,gamma) resonances in magnesium isotopes
B. Limata, F. Strieder, A. Formicola +30
Proton captures on Mg isotopes play an important role in the Mg-Al cycle active in stellar H shell burning. In particular, the strengths of low-energy resonances with E < 200 keV i…
An actively vetoed Clover gamma-detector for nuclear astrophysics at LUNA
LUNA collaboration, T. Szucs, D. Bemmerer +26
An escape-suppressed, composite high-purity germanium detector of the Clover type has been installed at the Laboratory for Underground Nuclear Astrophysics (LUNA) facility, deep un…
Direct measurement of the 15N(p,gamma)16O total cross section at novae energies
D Bemmerer, A Caciolli, R Bonetti +21
The 15N(p,gamma)16O reaction controls the passage of nucleosynthetic material from the first to the second carbon-nitrogen-oxygen (CNO) cycle. A direct measurement of the total 15N…
Experimental study of double beta decay modes using a CdZnTe detector array
J. V. Dawson, C. Goessling, B. Janutta +8
An array of sixteen 1 cm^3 CdZnTe semiconductor detectors was operated at the Gran Sasso Underground Laboratory (LNGS) to further investigate the feasibility of double-beta decay s…
An Investigation into the 113-Cd Beta Decay Spectrum using a CdZnTe Array
J. V. Dawson, C. Reeve, J. R. Wilson +7
We present 11 independent measurements of the half-life and spectral shape of the 4-fold forbidden beta decay of 113-Cd using CdZnTe semiconductors with a total combined lifetime o…
Ultra-sensitive in-beam gamma-ray spectroscopy for nuclear astrophysics at LUNA
A. Caciolli, L. Agostino, D. Bemmerer +29
Ultra-sensitive in-beam gamma-ray spectroscopy studies for nuclear astrophysics are performed at the LUNA (Laboratory for Underground Nuclear Astrophysics) 400 kV accelerator, deep…
The 3He(alpha,gamma)7Be S-factor at solar energies: the prompt gamma experiment at LUNA
H. Costantini, D. Bemmerer, F. Confortola +28
The 3He(alpha,gamma)7Be process is a key reaction in both Big-Bang nucleosynthesis and p-p chain of Hydrogen Burning in Stars. A new measurement of the 3He(alpha,gamma)7Be cross se…
Precision study of ground state capture in the 14N(p,gamma)15O reaction
M. Marta, A. Formicola, Gy. Gyurky +28
The rate of the hydrogen-burning carbon-nitrogen-oxygen (CNO) cycle is controlled by the slowest process, 14N(p,gamma)15O, which proceeds by capture to the ground and several excit…
Ground state capture in N(p,)O studied above the 259 keV resonance at LUNA
H. P. Trautvetter, D. Bemmerer, R. Bonetti +29
We report on a new measurement of N(p,)O for the ground state capture transition at = 360, 380 and 400 keV, using the 400 kV LUNA accelerator. The true coinc…
Comparison of the LUNA 3He(alpha,gamma)7Be activation results with earlier measurements and model calculations
Gy. Gyurky, D. Bemmerer, F. Confortola +27
Recently, the LUNA collaboration has carried out a high precision measurement on the 3He(alpha,gamma)7Be reaction cross section with both activation and on-line gamma-detection met…