The Experimental Limits on Q-ball Flux with the Baikal Deep Underwater Array "Gyrlyanda"

Details The Experimental Limits on Q-ball Flux with the Baikal Deep Underwater Array "Gyrlyanda" The Experimental Limits on Q-ball Flux with the Baikal Deep Underwater Array "Gyrlyanda"

1998-02-17

arxiv.org/abs/astro-ph/9802223v1

Astronomy and Astrophysics

Astrophysics

8 pages, 2 PostScript figures, uses here.sty and mine.sty

Scientific paper

Supersymmetric models allow for stable non-topological solitons, Q-balls, which can be produced in the early Universe and contribute to dark matter. Experimental signature of electrically neutral Q-balls is, in fact, the same as is expected for superheavy magnetic monopoles catalyzing baryon decay. Here we use the upper limits on monopole flux obtained with deep underwater Cherenkov array "Gyrlyanda" which operated in the Baikal lake in 1984-90 with 267 days of live time to obtain the limit on Q-ball flux. The last has been found to be equal to 3.9 x 10^{-16} cm^{-2} sr^{-1} s^{-1} (90% CL). This result is discussed and compared with other restrictions.

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