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Direct measurement of backgrounds using reactor-off data in Double Chooz

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posted on 2023-06-10, 01:46 authored by Y Abe, C Aberle, J C Dos Anjos, J C Barriere, M Bergevin, A Bernstein, Thiago Sogo BezerraThiago Sogo Bezerra, L Bezrukhov, E Blucher, N S Bowden, C Buck, J Busenitz, A Cabrera, E Caden, L Camilleri, Double Chooz Collaboration, others
Double Chooz is unique among modern reactor-based neutrino experiments studying ?¯e disappearance in that data can be collected with all reactors off. In this paper, we present data from 7.53 days of reactor-off running. Applying the same selection criteria as used in the Double Chooz reactor-on oscillation analysis, a measured background rate of 1.0±0.4 events/day is obtained. The background model for accidentals, cosmogenic ß-n-emitting isotopes, fast neutrons from cosmic muons, and stopped-µ decays used in the oscillation analysis is demonstrated to be correct within the uncertainties. Kinematic distributions of the events, which are dominantly cosmic-ray-produced correlated-background events, are provided. The background rates are scaled to the shielding depths of two other reactor-based oscillation experiments, Daya Bay and RENO.

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Publication status

  • Published

File Version

  • Published version

Journal

Physical Review D - Particles, Fields, Gravitation and Cosmology

ISSN

1550-7998

Publisher

American Physical Society

Issue

1

Volume

87

Page range

1-7

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2021-11-16

First Open Access (FOA) Date

2021-11-16

First Compliant Deposit (FCD) Date

2021-11-12

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