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

Abe, Y, Aberle, C, Dos Anjos, J C, Barriere, J C, Bergevin, M, Bernstein, A, Bezerra, T J C, Bezrukhov, L, Blucher, E, Bowden, N S, Buck, C, Busenitz, J, Cabrera, A, Caden, E, Camilleri, L, Double Chooz Collaboration, and others, (2013) Direct measurement of backgrounds using reactor-off data in Double Chooz. Physical Review D - Particles, Fields, Gravitation and Cosmology, 87 (1). pp. 1-7. ISSN 1550-7998

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Double Chooz is unique among modern reactor-based neutrino experiments studying ν̄e 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 β-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.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
SWORD Depositor: Mx Elements Account
Depositing User: Mx Elements Account
Date Deposited: 16 Nov 2021 10:46
Last Modified: 16 Nov 2021 11:15

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