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Comparisons of annual modulations in MINOS with the event rate modulation in CoGeNT

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posted on 2023-06-09, 23:21 authored by P Adamson, I Anghel, G Barr, M Bishai, A Blake, G J Bock, D Bogert, S V Cao, S Childress, J A B Coelho, L Corwin, D Cronin-Hennessy, N E Devenish, Elisabeth FalkElisabeth Falk, Jeff HartnellJeff Hartnell, MINOS Collaboration, others
The CoGeNT Collaboration has recently published results from a fifteen month data set which indicate an annual modulation in the event rate similar to what is expected from weakly interacting massive particle interactions. It has been suggested that the CoGeNT modulation may actually be caused by other annually modulating phenomena, specifically the flux of atmospheric muons underground or the radon level in the laboratory. We have compared the phase of the CoGeNT data modulation to that of the concurrent atmospheric muon and radon data collected by the MINOS experiment which occupies an adjacent experimental hall in the Soudan Underground Laboratory. The results presented are obtained by performing a shape-free ?2 data-to-data comparison and from a simultaneous fit of the MINOS and CoGeNT data to phase-shifted sinusoidal functions. Both tests indicate that the phase of the CoGeNT modulation is inconsistent with the phases of the MINOS muon and radon modulations at the 3.0s level. © 2013 American Physical Society.

History

Publication status

  • Published

File Version

  • Accepted version

Journal

Physical Review D - Particles, Fields, Gravitation and Cosmology

ISSN

1550-7998

Publisher

American Physical Society

Issue

3

Volume

87

Article number

a032005

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2021-03-17

First Open Access (FOA) Date

2021-03-17

First Compliant Deposit (FCD) Date

2021-03-16

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