From UPSC perspective, the following things are important :
Prelims level: Neutrino Fog
Why in the News?
The LUX-ZEPLIN (LZ) experiment revealed that as we continue to push the boundaries of dark matter detection, the issue of neutrino fog becomes increasingly significant.
What is the LUX-ZEPLIN (LZ) Experiment?
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What is Neutrino Fog?
- Neutrinos, often referred to as “ghost particles,” are subatomic particles with nearly zero mass and no electric charge.
- “Neutrino Fog” refers to the interference caused by neutrinos—subatomic particles that rarely interact with matter—in dark matter detection experiments.
- Neutrinos are produced naturally in the Sun’s core, supernovae, and even Earth’s atmosphere.
- Though they pass through most matter undetected, their weak interactions can cause small disturbances in highly sensitive detectors.
- As dark matter detectors become larger and more sensitive, they are more likely to detect neutrinos, leading to a “fog” of signals that can obscure or mimic potential dark matter interactions.
PYQ:[2015] In the context of modern scientific research, consider the following statements about ‘IceCube’, a particle detector located at South Pole, which was recently in the news: 1. It is the world’s largest neutrino detector, encompassing a cubic kilometre of ice. 2. It is a powerful telescope to search for dark matter 3. It is buried deep in the ice. Which of the statements given above is/are correct? (a) 1 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3 only |
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