Comprehensive Measurement of the Reactor Antineutrino Spectrum and Flux at Daya Bay

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F25%3A10510319" target="_blank" >RIV/00216208:11320/25:10510319 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=3xD.pbjaR7" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=3xD.pbjaR7</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevLett.134.201802" target="_blank" >10.1103/PhysRevLett.134.201802</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Comprehensive Measurement of the Reactor Antineutrino Spectrum and Flux at Daya Bay

Popis výsledku v původním jazyce

This Letter reports the precise measurement of the reactor antineutrino spectrum and flux based on the full dataset of 4.7 x 10(6) inverse-beta-decay candidates collected at Daya Bay near detectors. Expressed in terms of the inverse-beta-decay yield per fission, the antineutrino spectra from all reactor fissile isotopes and the specific U-235 and Pu-239 isotopes are measured with 1.3%, 3%, and 8% uncertainties, respectively, near the 3 MeV spectrum peak in reconstructed energy, reaching the best precision in the world. The total antineutrino flux and isotopic U-235 and Pu-239 fluxes are precisely measured to be 5.84 +/- 0.07, 6.16 +/- 0.12, and 4.16 +/- 0.21 in units of 10(-43) cm(2)/fission. These measurements are compared with the Huber-Mueller model, the reevaluated conversion model based on the Kurchatov Institute measurement, and the latest summation model (SM2023). The Daya Bay flux shows good consistency with the Kurchatov Institute and SM2023 models but disagrees with the Huber-Mueller model. The Daya Bay spectrum, however, disagrees with all model predictions.

Název v anglickém jazyce

Comprehensive Measurement of the Reactor Antineutrino Spectrum and Flux at Daya Bay

Popis výsledku anglicky

This Letter reports the precise measurement of the reactor antineutrino spectrum and flux based on the full dataset of 4.7 x 10(6) inverse-beta-decay candidates collected at Daya Bay near detectors. Expressed in terms of the inverse-beta-decay yield per fission, the antineutrino spectra from all reactor fissile isotopes and the specific U-235 and Pu-239 isotopes are measured with 1.3%, 3%, and 8% uncertainties, respectively, near the 3 MeV spectrum peak in reconstructed energy, reaching the best precision in the world. The total antineutrino flux and isotopic U-235 and Pu-239 fluxes are precisely measured to be 5.84 +/- 0.07, 6.16 +/- 0.12, and 4.16 +/- 0.21 in units of 10(-43) cm(2)/fission. These measurements are compared with the Huber-Mueller model, the reevaluated conversion model based on the Kurchatov Institute measurement, and the latest summation model (SM2023). The Daya Bay flux shows good consistency with the Kurchatov Institute and SM2023 models but disagrees with the Huber-Mueller model. The Daya Bay spectrum, however, disagrees with all model predictions.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10300 - Physical sciences

Projekt

<a href="/cs/project/EH22_008%2F0004632" target="_blank" >EH22_008/0004632: Výzkum základních stavebních kamenů hmoty s využitím špičkových technologií</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Review Letters

ISSN

0031-9007

e-ISSN

1079-7114

Svazek periodika

134

Číslo periodika v rámci svazku

20

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

201802

Kód UT WoS článku

001498265100001

EID výsledku v databázi Scopus

2-s2.0-105005832779