I More info on HT/HD shielding constants?

skywalker
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I was wondering how they measured or calculated these differences?
I dont know what they refer to, but assume theyre scattering Hydrogen with Tritium or Deuterium to measure the difference of something.

https://physics.nist.gov/cgi-bin/cuu/Results?search_for=shielding+difference
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Toponium is a hadron which is the bound state of a valance top quark and a valance antitop quark. Oversimplified presentations often state that top quarks don't form hadrons, because they decay to bottom quarks extremely rapidly after they are created, leaving no time to form a hadron. And, the vast majority of the time, this is true. But, the lifetime of a top quark is only an average lifetime. Sometimes it decays faster and sometimes it decays slower. In the highly improbable case that...

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