Baksan: No Dark Matter In A 24 Year Long Exposure Of The Sun!

By Tommaso Dorigo | January 8th 2013 09:21 AM

I just read with interest and awe the nice article appeared today in the arxiv about the search for dark matter annihilation in the sun’s core by the Baksan Underground Scintillator Telescope (BUST), a facility operating since December 1978 (!) in the Caucasian valley of Baksan.

BUST is a detector made of 3150 tanks (approx. 28″x28″x12″) of liquid scintillator, arranged in a structure of 17x17x11 meters (see picture below, left). It is located underground at an altitude of 1700 meters. There, the flux of secondary cosmic-ray muons coming from the upper atmosphere is a million times higher than the flux of upward-going ones generated by neutrino interactions in the earth core: by looking at upward-going muons (with energy above 1 GeV) tracing back to the position of the sun, BUST can detect a signal of energetic neutrinos coming from the sun core, thereby evidencing a possible signal of annihilation of dark matter particles.

Read more: Baksan: No Dark Matter In A 24 Year Long Exposure Of The Sun! — Science 2.0.

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