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The property of an object that determines how much it responds to a force in Newtonian mechanics, and how much it interacts with gravity in the Newtonian framework. Mass also refers to the intrinsic energy of a particle in particle physics. This tag does also cover effective mass.

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Neutrino mass limit from supernova data

I was reading some articles on the analysis of electron neutrino mass limit from the SN1987A data: Bachcall & Glashow, Arnett. … So an electron neutrino has no definite mass, how can we derive a limit on electron neutrino mass from this formula? …
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