Cascades from primary gamma rays and nuclei as a source of background in searches for oscillations between photons and axion-like particles

Journal Article · Mon Jan 15 00:00:00 EST 2018 · Physics of Particles and Nuclei

DOI:https://doi.org/10.1134/S1063779618010045· OSTI ID:22979591

Baklagin, S. A.; Kircheva, A. P.; Lukshin, A. A. ^[1]

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1. Skobeltsyn Institute of Nuclear Physics, Moscow State University, Moscow (Russian Federation)

Methods: of searching for oscillations of photons to axion-like particles (γ → ALP) in spectra of extragalactic sources are considered. It is shown that the secondary component from the cascades initiated by primary gamma rays or nuclei can produce an appreciable background in searches for ALPs in the optically thick region of the spectrum. Experiments with a high energy threshold (~1 TeV and higher) are insufficient for searching for γ → ALP oscillations; low-energy instruments (E < 100 GeV) like CTA should also be used.

• OSTI ID: 22979591
• Journal Information: Physics of Particles and Nuclei, Vol. 49, Issue 1; Other Information: Copyright (c) 2018 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7796
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALPS
AXIONS
GAMMA RADIATION
NUCLEI
OSCILLATIONS
PHOTONS