Sterile Neutrino Constraints from the STEREO Experiment with 66 Days of Reactor-On Data

Autoren

H Almazán
P del Amo Sanchez
L Bernard
A Blanchet
A Bonhomme
C Buck
J Favier
J Haser
V Hélaine
F Kandzia
S Kox
J Lamblin
A Letourneau
D Lhuillier
M Lindner
L Manzanillas
T Materna
A Minotti
F Montanet
H Pessard
J-S Real
C Roca
T Salagnac
S Schoppmann
V Sergeyeva
T Soldner
A Stutz
S Zsoldos

DOI

10.1103/physrevlett.121.161801

eISSN

1079-7114

ISSN

0031-9007

Ausgabe der Veröffentlichung

16

Zeitschrift

Physical Review Letters

Sprache

en

Artikelnummer

161801

Online publication date

2018

Status

Published online

Herausgeber

American Physical Society (APS)

Herausgeber URL

http://dx.doi.org/10.1103/physrevlett.121.161801

Datum der Datenerfassung

2018

Titel

Sterile Neutrino Constraints from the STEREO Experiment with 66 Days of Reactor-On Data

Ausgabe der Zeitschrift

121

Datenquelle: Crossref

Abstract

The reactor antineutrino anomaly might be explained by the oscillation of reactor antineutrinos toward a sterile neutrino of eV mass. In order to explore this hypothesis, the STEREO experiment measures the antineutrino energy spectrum in six different detector cells covering baselines between 9 and 11 m from the compact core of the ILL research reactor. In this Letter, results from 66 days of reactor turned on and 138 days of reactor turned off are reported. A novel method to extract the antineutrino rates has been developed based on the distribution of the pulse shape discrimination parameter. The test of a new oscillation toward a sterile neutrino is performed by comparing ratios of cells, independent of absolute normalization and of the prediction of the reactor spectrum. The results are found to be compatible with the null oscillation hypothesis and the best fit of the reactor antineutrino anomaly is excluded at 97.5% C.L.

Addresses

Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany.

Autoren

H Almazán
P Del Amo Sanchez
L Bernard
A Blanchet
A Bonhomme
C Buck
J Favier
J Haser
V Hélaine
F Kandzia
S Kox
J Lamblin
A Letourneau
D Lhuillier
M Lindner
L Manzanillas
T Materna
A Minotti
F Montanet
H Pessard
J-S Real
C Roca
T Salagnac
S Schoppmann
V Sergeyeva
T Soldner
A Stutz
S Zsoldos
STEREO Collaboration

DOI

10.1103/physrevlett.121.161801

eISSN

1079-7114

Externe Identifier

PubMed Identifier: 30387650

Funding acknowledgements

Agence Nationale de la Recherche: ANR-10-LABX-0038
Agence Nationale de la Recherche: ANR-11-LABX-0012
Centre National de la Recherche Scientifique:
ILL:
Max-Planck-Gesellschaft:
Agence Nationale de la Recherche: ANR-13-BS05-0007
Commissariat à l’Énergie Atomique et aux Énergies Alternatives:

Open access

false

ISSN

0031-9007

Ausgabe der Veröffentlichung

16

Zeitschrift

Physical review letters

Schlüsselwörter

STEREO Collaboration

Sprache

eng

Medium

Print

Paginierung

161801

Datum der Veröffentlichung

2018

Status

Published

Publisher licence

CC BY

Datum der Datenerfassung

2018

Titel

Sterile Neutrino Constraints from the STEREO Experiment with 66 Days of Reactor-On Data.

Sub types

Journal Article

Ausgabe der Zeitschrift

121

Datenquelle: Europe PubMed Central

Abstract

The reactor antineutrino anomaly might be explained by the oscillation of reactor antineutrinos toward a sterile neutrino of eV mass. In order to explore this hypothesis, the STEREO experiment measures the antineutrino energy spectrum in six different detector cells covering baselines between 9 and 11 m from the compact core of the ILL research reactor. In this Letter, results from 66 days of reactor turned on and 138 days of reactor turned off are reported. A novel method to extract the antineutrino rates has been developed based on the distribution of the pulse shape discrimination parameter. The test of a new oscillation toward a sterile neutrino is performed by comparing ratios of cells, independent of absolute normalization and of the prediction of the reactor spectrum. The results are found to be compatible with the null oscillation hypothesis and the best fit of the reactor antineutrino anomaly is excluded at 97.5% C.L.

Autoren

H Almazán
P Del Amo Sanchez
L Bernard
A Blanchet
A Bonhomme
C Buck
J Favier
J Haser
V Hélaine
F Kandzia
S Kox
J Lamblin
A Letourneau
D Lhuillier
M Lindner
L Manzanillas
T Materna
A Minotti
F Montanet
H Pessard
J-S Real
C Roca
T Salagnac
S Schoppmann
V Sergeyeva
T Soldner
A Stutz
S Zsoldos
STEREO Collaboration

Autoren-URL

https://www.ncbi.nlm.nih.gov/pubmed/30387650

DOI

10.1103/PhysRevLett.121.161801

eISSN

1079-7114

Ausgabe der Veröffentlichung

16

Zeitschrift

Phys Rev Lett

Sprache

eng

Country

United States

Paginierung

161801

Datum der Veröffentlichung

2018

Status

Published

Datum, an dem der Datensatz öffentlich gemacht wurde

2018

Titel

Sterile Neutrino Constraints from the STEREO Experiment with 66 Days of Reactor-On Data.

Sub types

Journal Article

Ausgabe der Zeitschrift

121

Datenquelle: PubMed

Sterile Neutrino Constraints from the STEREO Experiment with 66 Days of Reactor-On Data

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