NAGIOS: RODERIC FUNCIONANDO

Final results of Borexino Phase-I on low-energy solar neutrino spectroscopy

Repositori DSpace/Manakin

IMPORTANT: Aquest repositori està en una versió antiga des del 3/12/2023. La nova instal.lació está en https://roderic.uv.es/

Final results of Borexino Phase-I on low-energy solar neutrino spectroscopy

Mostra el registre parcial de l'element

dc.contributor.author Borexino Collaboration
dc.contributor.author Bellini, Gianpaolo
dc.contributor.author Peña Garay, Carlos
dc.date.accessioned 2014-11-04T11:24:14Z
dc.date.available 2014-11-04T11:24:14Z
dc.date.issued 2014
dc.identifier.citation Borexino Collaboration Bellini, Gianpaolo Peña Garay, Carlos 2014 Final results of Borexino Phase-I on low-energy solar neutrino spectroscopy Physical Review D 89 11 112007-1 112007-68
dc.identifier.uri http://hdl.handle.net/10550/39581
dc.description.abstract Borexino has been running since May 2007 at the Laboratori Nazionali del Gran Sasso laboratory in Italy with the primary goal of detecting solar neutrinos. The detector a large unsegmented liquid scintillator calorimeter characterized by unprecedented low levels of intrinsic radioactivity is optimized for the study of the lower energy part of the spectrum. During Phase-I (2007-2010) Borexino first detected and then precisely measured the flux of the Be-7 solar neutrinos ruled out any significant day-night asymmetry of their interaction rate made the first direct observation of the pep neutrinos and set the tightest upper limit on the flux of solar neutrinos produced in the CNO cycle (carbon nitrogen oxigen) where carbon nitrogen and oxygen serve as catalysts in the fusion process. In this paper we discuss the signal signature and provide a comprehensive description of the backgrounds quantify their event rates describe the methods for their identification selection or subtraction and describe data analysis. Key features are an extensive in situ calibration program using radioactive sources the detailed modeling of the detector response the ability to define an innermost fiducial volume with extremely low background via software cuts and the excellent pulse-shape discrimination capability of the scintillator that allows particle identification. We report a measurement of the annual modulation of the Be-7 neutrino interaction rate. The period the amplitude and the phase of the observed modulation are consistent with the solar origin of these events and the absence of their annual modulation is rejected with higher than 99% C.L. The physics implications of Phase-I results in the context of the neutrino oscillation physics and solar models are presented.
dc.language.iso eng
dc.relation.ispartof Physical Review D, 2014, vol. 89, num. 11, p. 112007-1-112007-68
dc.subject Física
dc.title Final results of Borexino Phase-I on low-energy solar neutrino spectroscopy
dc.type journal article es_ES
dc.date.updated 2014-11-04T11:24:14Z
dc.identifier.doi 10.1103/PhysRevD.89.112007
dc.identifier.idgrec 099116
dc.rights.accessRights open access es_ES

Visualització       (7.866Mb)

Aquest element apareix en la col·lecció o col·leccions següent(s)

Mostra el registre parcial de l'element

Cerca a RODERIC

Cerca avançada

Visualitza

Estadístiques