• Open Access

Exposure-background duality in the searches of neutrinoless double beta decay

M. K. Singh, H. T. Wong, L. Singh, V. Sharma, V. Singh, and Q. Yue
Phys. Rev. D 101, 013006 – Published 27 January 2020

Abstract

Tremendous efforts are required to scale the summit of observing neutrinoless double beta decay (0νββ). This article quantitatively explores the interplay between exposure (target mass×data taking time) and background levels in 0νββ experiments. In particular, background reduction can substantially alleviate the necessity of unrealistic large exposure as the normal mass hierarchy (NH) is probed. The nondegenerate (ND)-NH can be covered with an exposure of O(100) ton-year, which is only an order of magnitude larger than those planned for next-generation projects—provided that the background could be reduced by O(106) relative to the current best levels. It follows that background suppression will be playing increasingly important and investment-effective, if not determining, roles in future 0νββ experiments with sensitivity goals of approaching and covering ND-NH.

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  • Received 27 August 2019

DOI:https://doi.org/10.1103/PhysRevD.101.013006

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Nuclear PhysicsParticles & Fields

Authors & Affiliations

M. K. Singh1,2, H. T. Wong1,*, L. Singh1,3, V. Sharma1,2, V. Singh1,2,3, and Q. Yue4

  • 1Institute of Physics, Academia Sinica, Taipei 11529
  • 2Department of Physics, Institute of Science, Banaras Hindu University, Varanasi 221005
  • 3Department of Physics, School of Physical and Chemical Sciences, Central University of South Bihar, Gaya 824236
  • 4Department of Engineering Physics, Tsinghua University, Beijing 100084

  • *Corresponding author. htwong@phys.sinica.edu.tw

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Vol. 101, Iss. 1 — 1 January 2020

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