As for the photon itself, we find here a va-riety of approaches that place it in different contexts. There are descriptions of the photon based on experiments that have used progressively …

Photons are electromagnetic radiation with zero mass, zero charge, and a velocity that is always c, the speed of light. Because they are electrically neutral, they do not steadily lose energy via …

The photon plays the fundamental role as the gauge boson of mediating electromag- netic interactions through the coupling to charged particles. The photon appears to be in this …

See Chapter 4 in Longair for photon interactions, chapters 2, 3, 5 for particle interactions

Usage of the term “photon” closer to its present meaning occurred in France in 1925 [62, 67, 71], apparently inspired by Perrin. Apparently, Kepler considered the pointing of comets’ tails away …

The photon PDF used in the calculation contains no charm, but the resolved process can generate events at low xOBS γ where a third jet plays the role of the photon remnant.

Photon radiance Lq The photon flux emitted or absorbed by a surface, per unit solid angle, per unit projected area.