Final Measurement of the ^{235}U Antineutrino Energy Spectrum with the PROSPECT-I Detector at HFIR.

Journal

Physical review letters
ISSN: 1079-7114
Titre abrégé: Phys Rev Lett
Pays: United States
ID NLM: 0401141

Informations de publication

Date de publication:
14 Jul 2023
Historique:
received: 27 01 2023
revised: 14 02 2023
accepted: 11 05 2023
medline: 28 7 2023
pubmed: 28 7 2023
entrez: 28 7 2023
Statut: ppublish

Résumé

This Letter reports one of the most precise measurements to date of the antineutrino spectrum from a purely ^{235}U-fueled reactor, made with the final dataset from the PROSPECT-I detector at the High Flux Isotope Reactor. By extracting information from previously unused detector segments, this analysis effectively doubles the statistics of the previous PROSPECT measurement. The reconstructed energy spectrum is unfolded into antineutrino energy and compared with both the Huber-Mueller model and a spectrum from a commercial reactor burning multiple fuel isotopes. A local excess over the model is observed in the 5-7 MeV energy region. Comparison of the PROSPECT results with those from commercial reactors provides new constraints on the origin of this excess, disfavoring at 2.0 and 3.7 standard deviations the hypotheses that antineutrinos from ^{235}U are solely responsible and noncontributors to the excess observed at commercial reactors, respectively.

Identifiants

DOI: 10.1103/PhysRevLett.131.021802 PMID: 37505961
pubmed: 37505961
doi: 10.1103/PhysRevLett.131.021802
doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

021802

Auteurs

M Andriamirado (M)

Department of Physics, Illinois Institute of Technology, Chicago, Illinois 60616, USA.

A B Balantekin (AB)

Department of Physics, University of Wisconsin, Madison, Wisconsin 53706, USA.

C D Bass (CD)

Department of Physics, Le Moyne College, Syracuse, New York 13214, USA.

D E Bergeron (DE)

National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA.

E P Bernard (EP)

Nuclear and Chemical Sciences Division, Lawrence Livermore National Laboratory, Livermore, California 94550, USA.

N S Bowden (NS)

Nuclear and Chemical Sciences Division, Lawrence Livermore National Laboratory, Livermore, California 94550, USA.

C D Bryan (CD)

High Flux Isotope Reactor, Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA.

R Carr (R)

Department of Physics, United States Naval Academy, Annapolis, Maryland 21402, USA.

T Classen (T)

Nuclear and Chemical Sciences Division, Lawrence Livermore National Laboratory, Livermore, California 94550, USA.

A J Conant (AJ)

High Flux Isotope Reactor, Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA.

G Deichert (G)

High Flux Isotope Reactor, Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA.

A Delgado (A)

Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.

M V Diwan (MV)

Brookhaven National Laboratory, Upton, New York 11973, USA.

M J Dolinski (MJ)

Department of Physics, Drexel University, Philadelphia PA 19104-2875, Pennsylvania, USA.

A Erickson (A)

George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA.

B T Foust (BT)

Wright Laboratory, Department of Physics, Yale University, New Haven, Connecticut 06520, USA.

J K Gaison (JK)

Wright Laboratory, Department of Physics, Yale University, New Haven, Connecticut 06520, USA.

A Galindo-Uribari (A)

Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.
Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37916, USA.

C E Gilbert (CE)

Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.

S Gokhale (S)

Brookhaven National Laboratory, Upton, New York 11973, USA.

C Grant (C)

Department of Physics, Boston University, Boston, Massachusetts 02215, USA.

S Hans (S)

Brookhaven National Laboratory, Upton, New York 11973, USA.

A B Hansell (AB)

Department of Physics, Susquehanna University, Selinsgrove, Pennsylvania 17870, USA.

K M Heeger (KM)

Wright Laboratory, Department of Physics, Yale University, New Haven, Connecticut 06520, USA.

B Heffron (B)

Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.
Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37916, USA.

D E Jaffe (DE)

Brookhaven National Laboratory, Upton, New York 11973, USA.

S Jayakumar (S)

Department of Physics, Drexel University, Philadelphia PA 19104-2875, Pennsylvania, USA.

X Ji (X)

Brookhaven National Laboratory, Upton, New York 11973, USA.

D C Jones (DC)

Department of Physics (035-08), Temple University, 1925 N 12th Street, Philadelphia, Pennsylvania 19122-1801, USA.

J Koblanski (J)

Department of Physics and Astronomy, University of Hawaii, Honolulu, Hawaii 96822, USA.

P Kunkle (P)

Department of Physics, Boston University, Boston, Massachusetts 02215, USA.

O Kyzylova (O)

Department of Physics, Drexel University, Philadelphia PA 19104-2875, Pennsylvania, USA.

D LaBelle (D)

Department of Physics, Drexel University, Philadelphia PA 19104-2875, Pennsylvania, USA.

C E Lane (CE)

Department of Physics, Drexel University, Philadelphia PA 19104-2875, Pennsylvania, USA.

T J Langford (TJ)

Wright Laboratory, Department of Physics, Yale University, New Haven, Connecticut 06520, USA.

J LaRosa (J)

National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA.

B R Littlejohn (BR)

Department of Physics, Illinois Institute of Technology, Chicago, Illinois 60616, USA.

X Lu (X)

Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.
Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37916, USA.

J Maricic (J)

Department of Physics and Astronomy, University of Hawaii, Honolulu, Hawaii 96822, USA.

M P Mendenhall (MP)

Nuclear and Chemical Sciences Division, Lawrence Livermore National Laboratory, Livermore, California 94550, USA.

A M Meyer (AM)

Department of Physics and Astronomy, University of Hawaii, Honolulu, Hawaii 96822, USA.

R Milincic (R)

Department of Physics and Astronomy, University of Hawaii, Honolulu, Hawaii 96822, USA.

P E Mueller (PE)

Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.

H P Mumm (HP)

National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA.

J Napolitano (J)

Department of Physics (035-08), Temple University, 1925 N 12th Street, Philadelphia, Pennsylvania 19122-1801, USA.

R Neilson (R)

Department of Physics, Drexel University, Philadelphia PA 19104-2875, Pennsylvania, USA.

J A Nikkel (JA)

Wright Laboratory, Department of Physics, Yale University, New Haven, Connecticut 06520, USA.

S Nour (S)

National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA.

J L Palomino Gallo (JL)

Department of Physics, Illinois Institute of Technology, Chicago, Illinois 60616, USA.

D A Pushin (DA)

Institute for Quantum Computing and Department of Physics, University of Waterloo, Waterloo, ON N2L 3G1 Ontario, Canada.

X Qian (X)

Brookhaven National Laboratory, Upton, New York 11973, USA.

C Roca (C)

Nuclear and Chemical Sciences Division, Lawrence Livermore National Laboratory, Livermore, California 94550, USA.

R Rosero (R)

Brookhaven National Laboratory, Upton, New York 11973, USA.

M Searles (M)

High Flux Isotope Reactor, Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA.

P T Surukuchi (PT)

Wright Laboratory, Department of Physics, Yale University, New Haven, Connecticut 06520, USA.

F Sutanto (F)

Nuclear and Chemical Sciences Division, Lawrence Livermore National Laboratory, Livermore, California 94550, USA.

M A Tyra (MA)

National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA.

D Venegas-Vargas (D)

Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.
Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37916, USA.

P B Weatherly (PB)

Department of Physics, Drexel University, Philadelphia PA 19104-2875, Pennsylvania, USA.

J Wilhelmi (J)

Wright Laboratory, Department of Physics, Yale University, New Haven, Connecticut 06520, USA.

A Woolverton (A)

Institute for Quantum Computing and Department of Physics, University of Waterloo, Waterloo, ON N2L 3G1 Ontario, Canada.

M Yeh (M)

Brookhaven National Laboratory, Upton, New York 11973, USA.

C Zhang (C)

Brookhaven National Laboratory, Upton, New York 11973, USA.

X Zhang (X)

Nuclear and Chemical Sciences Division, Lawrence Livermore National Laboratory, Livermore, California 94550, USA.

Classifications MeSH