A thermal calorimetric apparatus was designed, built and calibrated for measuring the activity of the artificial 144 Ce-144 Pr antineutrino source. This measurement will be performed at the Laboratori Nazionali del Gran Sasso in Italy, just before the source insertion in the tunnel under the Borexino detector and a precision better than 1% is...
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2020 (v1)PublicationUploaded on: April 14, 2023
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2017 (v1)Publication
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Uploaded on: April 14, 2023 -
2023 (v1)Publication
Since the beginning of 2012, the Borexino collaboration has been reporting precision measurements of the solar neutrino fluxes, emitted in the proton–proton chain and in the Carbon–Nitrogen–Oxygen cycle. The experimental sensitivity achieved in Phase-II and Phase-III of the Borexino data taking made it possible to detect the annual modulation...
Uploaded on: January 31, 2024 -
2017 (v1)Publication
Geo-neutrinos, electron anti-neutrinos produced in b-decays of naturally occurring radioactive isotopes in the Earth, are a unique direct probe of our planet's interior. After a brief introduction of the geo-neutrinos' properties and of the main aims of their study, we discuss the features of a detector which has recently provided breakthrough...
Uploaded on: April 14, 2023 -
2016 (v1)Publication
We review the solar neutrinos results of Borexino and the limit on the charge conservation obtained in the context of the analysis of the low energy region of the energy spectrum.
Uploaded on: March 27, 2023 -
2016 (v1)Publication
The Borexino experiment located in the Gran Sasso National Laboratory, is an organic liquid scintillator detector conceived for the real time spectroscopy of low energy solar neutrinos. The phase-I of the data taking campaign (2007 - 2010) has allowed the first independent measurements of 7 Be and pep solar neutrino fluxes as well as the first...
Uploaded on: March 27, 2023 -
2016 (v1)Publication
Neutrino produced in a chain of nuclear reactions in the Sun starting from the fusion of two protons, for the first time has been detected in a real-time detector in spectrometric mode. The unique properties of the Borexino detector provided an oppurtunity to disentangle pp-neutrino spectrum from the background components. A comparison of the...
Uploaded on: April 14, 2023 -
2016 (v1)Publication
The neutrino probability to interact is so faint that every attempt to detect the neutrino signal is an experimental challenge. Neutrinos freely escape from remote galaxies or from the deep of the Sun and they are natural carriers of precious information about regions otherwise unaccessible. Borexino is a large, unsegmented liquid-scintillator...
Uploaded on: April 14, 2023 -
2020 (v1)Publication
Neutrinos emitted in the carbon, nitrogen, oxygen (CNO) fusion cycle in the Sun are a sub-dominant, yet crucial component of solar neutrinos whose flux has not been measured yet. The Borexino experiment at the Laboratori Nazionali del Gran Sasso (Italy) has a unique opportunity to detect them directly thanks to the detector's radiopurity and...
Uploaded on: April 14, 2023 -
2016 (v1)Publication
We review the geoneutrino measurement with Borexino from 2056 days of data taking.
Uploaded on: April 14, 2023 -
2016 (v1)Publication
The Borexino experiment is operational at Laboratori Nazionali del Gran Sasso since 2007. Its technical distinctive feature is the unprecedented ultralow background of the inner scintillating core, which is the basis of the outstanding achievements obtained by the experiment. After recalling the main features of the detector, we review the...
Uploaded on: April 14, 2023 -
2024 (v1)Publication
Borexino could efficiently distinguish between α and β radiation in its liquid scintillator by the characteristic time profile of its scintillation pulse. This α/β discrimination, first demonstrated on the ton scale in the counting test facility prototype, was used throughout the lifetime of the experiment between 2007 and 2021. With this...
Uploaded on: September 3, 2024 -
2020 (v1)Publication
We report on an improved measurement of the B8 solar neutrino interaction rate with the Borexino experiment at the Laboratori Nazionali del Gran Sasso. Neutrinos are detected via their elastic scattering on electrons in a large volume of liquid scintillator. The measured rate of scattered electrons above 3 MeV of energy is...
Uploaded on: April 14, 2023 -
2016 (v1)Publication
The Borexino detector has convincingly shown its outstanding performances in the low energy regime through its accomplishments in the observation and study of the solar and geo neutrinos. It is then an ideal tool to perform a state of the art source-based experiment for testing the longstanding hypothesis of a fourth sterile neutrino with ∼ eV...
Uploaded on: April 14, 2023 -
2019 (v1)Publication
Borexino is running at the INFN Gran Sasso National Laboraries, Italy since 2007. Its technical distinctive feature is the unprecedented ultralow background of the inner scintillating core, which is the foundation for the outstanding achievements accumulated by this experiment. In this contribution, after recalling the main features of the...
Uploaded on: April 14, 2023 -
2019 (v1)Publication
We present the simultaneous measurement of the interaction rates R-pp, R-Be, R-pep of pp, Be-7, and pep solar neutrinos performed with a global fit to the Borexino data in an extended energy range (0.19-2.93) MeV with particular attention to details of the analysis methods. This result was obtained by analyzing 1291.51 days of Borexino Phase-II...
Uploaded on: April 14, 2023 -
2018 (v1)Publication
Borexino recently performed a comprehensive measurement of the solar neutrino fluxes of whole pp chain. We outline the interest and some physical consequence of the results.
Uploaded on: April 14, 2023 -
2018 (v1)Publication
We present the most recent results from the two currently running solar neutrino experiments, Borexino at the Gran Sasso laboratory in Italy and SuperK at Kamioka mine in Japan. SuperK has released the most precise yet measurement of the 8B solar neutrino interaction rate, with a precision better than 2%, consistent with a constant solar...
Uploaded on: April 14, 2023 -
2019 (v1)Publication
Borexino is a large liquid-scintillator detector with unprecedented intrinsic radiopurity levels, located at the LNGS laboratory in Italy. Its primary goal is to perform a real-time solar neutrinos spectroscopy. The main procedures for the solar neutrino analysis of Borexino Phase-II data (2011-2016) are briefly described.
Uploaded on: April 14, 2023 -
2020 (v1)Publication
The Borexino detector measures solar neutrino fluxes via neutrino-electron elastic scattering. Observed spectra are determined by the solar-νe survival probability Pee(E), and the chiral couplings of the neutrino and electron. Some theories of physics beyond the Standard Model postulate the existence of Non-Standard Interactions (NSI's) which...
Uploaded on: April 14, 2023 -
2016 (v1)Publication
The Borexino detector has convincingly shown its outstanding performance in the in the sub-MeV regime through its unprecedented accomplishments in the solar and geo-neutrinos detection, which make it the ideal tool to unambiguously test the long-standing issue of the existence of a sterile neutrino, as suggested by several anomalies: the...
Uploaded on: April 14, 2023 -
2020 (v1)Publication
The Borexino liquid scintillator neutrino observatory has a unique capability to perform high-precision solar neutrino observations thanks to its exceptional radiopurity and good energy resolution (5% at 1 MeV). A comprehensive study of the pp-chain neutrinos was presented that includes the direct measurements of 7Be, pp and pep neutrino fluxes...
Uploaded on: April 14, 2023