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Particle physics is the study of the fundamental forces of nature as they are embodied in the interactions of elementary and composite particles at high energies and short time and distance scales. DO NOT USE THIS TAG for point particles in classical mechanics.

1 vote
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Particle Data Group book

Many PDG data books have 'July' marked on their covers, does this mean they are published (and made available on their website) in July? When is it expected to be available this year? (date or month …
Vidya Sagar V's user avatar
1 vote
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Why aren't we sure that photons and gravitons are massless? [duplicate]

In particle data group's (PDG) The Review of Particle Physics (2016) page number 29, the mass of the photon is given to be $<1\times10^{-18}eV$ and that of graviton as $<6\times10^{-32}eV$. In case …
Vidya Sagar V's user avatar