Combined directional and spectral analysis of solar neutrinos from Carbon-Nitrogen-Oxygen fusion cycle with Borexino Experiment

Publikation: Beitrag in FachzeitschriftKonferenzartikelBeigetragenBegutachtung

Beitragende

  • Borexino Collaboration - (Autor:in)
  • Professur für Kernphysik
  • Forschungszentrum Jülich
  • Rheinisch-Westfälische Technische Hochschule Aachen
  • National Institute for Nuclear Physics
  • Princeton University
  • University of Genoa
  • Lomonosov Moscow State University
  • RAS - Saint Petersburg Nuclear Physics Institute
  • Institut de Mecanique Celeste et de Calcul des Ephemerides
  • Gran Sasso Science Institute
  • Joint Institute for Nuclear Research
  • Johannes Gutenberg-Universität Mainz
  • Jagiellonian University in Kraków
  • National Academy of Sciences of Ukraine
  • Royal Holloway University of London
  • Institute for Nuclear Research
  • Russian Research Centre Kurchatov Institute
  • Moscow Engineering Physics Institute
  • Technische Universität München
  • Technische Universität Dresden

Abstract

Borexino, placed at LNGS in Italy, was a 280-ton liquid scintillator detector that took data from May 2007 to October 2021. Thanks to its unprecedented radio-purity, the real time spectroscopic measurement of solar neutrinos from both the pp-chain and Carbon-Nitrogen-Oxygen (CNO) fusion cycle of the Sun has been performed. Borexino also reported the first directional measurement of sub-MeV7Be solar neutrinos with the Phase-I period (May 2007-May 2010) using a novel technique called Correlated and Integrated Directionality (CID), exploiting the sub-dominant and directional Cherenkov photons detected at early times. For the first time, we provide the CNO solar neutrinos measurement without using an independent constraint on210Bi background rate by exploiting the CID technique on the complete Borexino detector live time dataset. This article presents the complete analysis strategy and the latest results on CNO solar neutrinos obtained by using the CID technique in Borexino. In addition, we also present the most precise CNO measurement obtained by Borexino using a spectral fit on the Phase-III dataset as used in 2022 analysis, where the novel CID result is now applied as an additional constraint.

Details

OriginalspracheEnglisch
Aufsatznummer163
FachzeitschriftProceedings of Science
Jahrgang449
PublikationsstatusVeröffentlicht - 21 März 2024
Peer-Review-StatusJa

Konferenz

Titel2023 European Physical Society Conference on High Energy Physics
KurztitelEPS-HEP 2023
Dauer21 - 25 August 2023
Webseite
OrtUniversität Hamburg & Online
StadtHamburg
LandDeutschland

Schlagworte

ASJC Scopus Sachgebiete