Identification of the cosmogenic 11C background in large volumes of liquid scintillators with Borexino

Publikationstyp:
Zeitschriftenaufsatz
Metadaten:
Autoren
  • M Agostini
  • K Altenmueller
  • S Appel
  • V Atroshchenko
  • Z Bagdasarian
  • D Basilico
  • G Bellini
  • J Benziger
  • R Biondi
  • D Bravo
  • B Caccianiga
  • F Calaprice
  • A Caminata
  • P Cavalcante
  • A Chepurnov
  • D D'Angelo
  • S Davini
  • A Derbin
  • A Di ZGiacintio
  • V Di Marcello
  • XF Ding
  • A Di Ludovico
  • L Di Noto
  • I Drachnev
  • A Formozov
  • D Franco
  • C Galbiati
  • C Ghiano
  • M Giammarchi
  • A Goretti
  • AS Goettel
  • M Gromov
  • D Guffanti
  • Aldo Ianni
  • Andrea Ianni
  • A Jany
  • D Jeschke
  • V Kobychev
  • G Korga
  • S Kumaran
  • M Laubenstein
  • E Litvinovich
  • P Lombardi
  • I Lomskaya
  • L Ludhova
  • G Lukyanchenko
  • L Lukyanchenko
  • I Machulin
  • J Martyn
  • E Meroni
  • M Meyer
  • L Miramonti
  • M Misiaszek
  • V Muratova
  • B Neumair
  • M Nieslony
  • R Nugmanov
  • L Oberauer
  • V Orekhov
  • F Ortica
  • M Pallavicini
  • L Papp
  • L Pelicci
  • Oe Penek
  • L Pietrofaccia
  • N Pilipenko
  • A Pocar
  • A Porcelli
  • G Raikov
  • MT Ranalli
  • G Ranucci
  • A Razeto
  • A Re
  • M Redchuk
  • A Romani
  • N Rossi
  • S Schoenert
  • D Semenov
  • G Settanta
  • M Skorokhvatov
  • A Singhal
  • O Smirnov
  • A Sotnikov
  • Y Suvorov
  • R Tartaglia
  • G Testera
  • J Thurn
  • E Unzhakov
  • A Vishneva
  • RB Vogelaar
  • F von Feilitzsch
  • M Wojcik
  • M Wurm
  • S Zavatarelli
  • K Zuber
  • G Zuzel
Autoren-URL
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000728453900002&DestLinkType=FullRecord&DestApp=WOS_CPL
DOI
10.1140/epjc/s10052-021-09799-x
eISSN
1434-6052
Externe Identifier
  • Clarivate Analytics Document Solution ID: XL9IV
ISSN
1434-6044
Ausgabe der Veröffentlichung
12
Zeitschrift
EUROPEAN PHYSICAL JOURNAL C
Artikelnummer
ARTN 1075
Datum der Veröffentlichung
2021
Status
Published
Titel
Identification of the cosmogenic <SUP>11</SUP>C background in large volumes of liquid scintillators with Borexino
Sub types
  • Article
Ausgabe der Zeitschrift
81

Datenquelle: Web of Science (Lite)

Andere Metadatenquellen:
Abstract
<jats:title>Abstract</jats:title><jats:p>Cosmogenic radio-nuclei are an important source of background for low-energy neutrino experiments. In Borexino, cosmogenic <jats:inline-formula><jats:alternatives><jats:tex-math>$$^{11}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mrow /> <mml:mn>11</mml:mn> </mml:msup> </mml:math></jats:alternatives></jats:inline-formula>C decays outnumber solar <jats:italic>pep</jats:italic> and CNO neutrino events by about ten to one. In order to extract the flux of these two neutrino species, a highly efficient identification of this background is mandatory. We present here the details of the most consolidated strategy, used throughout Borexino solar neutrino measurements. It hinges upon finding the space-time correlations between <jats:inline-formula><jats:alternatives><jats:tex-math>$$^{11}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mrow /> <mml:mn>11</mml:mn> </mml:msup> </mml:math></jats:alternatives></jats:inline-formula>C decays, the preceding parent muons and the accompanying neutrons. This article describes the working principles and evaluates the performance of this Three-Fold Coincidence (TFC) technique in its two current implementations: a hard-cut and a likelihood-based approach. Both show stable performances throughout Borexino Phases II (2012–2016) and III (2016–2020) data sets, with a <jats:inline-formula><jats:alternatives><jats:tex-math>$$^{11}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mrow /> <mml:mn>11</mml:mn> </mml:msup> </mml:math></jats:alternatives></jats:inline-formula>C tagging efficiency of <jats:inline-formula><jats:alternatives><jats:tex-math>$$\sim 90$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mo>∼</mml:mo> <mml:mn>90</mml:mn> </mml:mrow> </mml:math></jats:alternatives></jats:inline-formula> % and <jats:inline-formula><jats:alternatives><jats:tex-math>$$\sim $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mo>∼</mml:mo> </mml:math></jats:alternatives></jats:inline-formula> 63–66 % of the exposure surviving the tagging. We present also a novel technique that targets specifically <jats:inline-formula><jats:alternatives><jats:tex-math>$$^{11}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mrow /> <mml:mn>11</mml:mn> </mml:msup> </mml:math></jats:alternatives></jats:inline-formula>C produced in high-multiplicity during major spallation events. Such <jats:inline-formula><jats:alternatives><jats:tex-math>$$^{11}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mrow /> <mml:mn>11</mml:mn> </mml:msup> </mml:math></jats:alternatives></jats:inline-formula>C appear as a <jats:italic>burst</jats:italic> of events, whose space-time correlation can be exploited. Burst identification can be combined with the TFC to obtain about the same tagging efficiency of <jats:inline-formula><jats:alternatives><jats:tex-math>$$\sim 90\%$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mo>∼</mml:mo> <mml:mn>90</mml:mn> <mml:mo>%</mml:mo> </mml:mrow> </mml:math></jats:alternatives></jats:inline-formula> but with a higher fraction of the exposure surviving, in the range of <jats:inline-formula><jats:alternatives><jats:tex-math>$$\sim $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mo>∼</mml:mo> </mml:math></jats:alternatives></jats:inline-formula> 66–68 %.</jats:p>
Autoren
  • M Agostini
  • K Altenmüller
  • S Appel
  • V Atroshchenko
  • Z Bagdasarian
  • D Basilico
  • G Bellini
  • J Benziger
  • R Biondi
  • D Bravo
  • B Caccianiga
  • F Calaprice
  • A Caminata
  • P Cavalcante
  • A Chepurnov
  • D D’Angelo
  • S Davini
  • A Derbin
  • A Di ZGiacintio
  • V Di Marcello
  • XF Ding
  • A Di Ludovico
  • L Di Noto
  • I Drachnev
  • A Formozov
  • D Franco
  • C Galbiati
  • C Ghiano
  • M Giammarchi
  • A Goretti
  • AS Göttel
  • M Gromov
  • D Guffanti
  • Aldo Ianni
  • Andrea Ianni
  • A Jany
  • D Jeschke
  • V Kobychev
  • G Korga
  • S Kumaran
  • M Laubenstein
  • E Litvinovich
  • P Lombardi
  • I Lomskaya
  • L Ludhova
  • G Lukyanchenko
  • L Lukyanchenko
  • I Machulin
  • J Martyn
  • E Meroni
  • M Meyer
  • L Miramonti
  • M Misiaszek
  • V Muratova
  • B Neumair
  • M Nieslony
  • R Nugmanov
  • L Oberauer
  • V Orekhov
  • F Ortica
  • M Pallavicini
  • L Papp
  • L Pelicci
  • Ö Penek
  • L Pietrofaccia
  • N Pilipenko
  • A Pocar
  • A Porcelli
  • G Raikov
  • MT Ranalli
  • G Ranucci
  • A Razeto
  • A Re
  • M Redchuk
  • A Romani
  • N Rossi
  • S Schönert
  • D Semenov
  • G Settanta
  • M Skorokhvatov
  • A Singhal
  • O Smirnov
  • A Sotnikov
  • Y Suvorov
  • R Tartaglia
  • G Testera
  • J Thurn
  • E Unzhakov
  • A Vishneva
  • RB Vogelaar
  • F von Feilitzsch
  • M Wojcik
  • M Wurm
  • S Zavatarelli
  • K Zuber
  • G Zuzel
DOI
10.1140/epjc/s10052-021-09799-x
eISSN
1434-6052
ISSN
1434-6044
Ausgabe der Veröffentlichung
12
Zeitschrift
The European Physical Journal C
Sprache
en
Artikelnummer
1075
Online publication date
2021
Datum der Veröffentlichung
2021
Status
Published
Herausgeber
Springer Science and Business Media LLC
Herausgeber URL
http://dx.doi.org/10.1140/epjc/s10052-021-09799-x
Datum der Datenerfassung
2022
Titel
Identification of the cosmogenic $$^{11}$$C background in large volumes of liquid scintillators with Borexino
Ausgabe der Zeitschrift
81

Datenquelle: Crossref

Beziehungen:
Eigentum von

Werkzeuge