In
particle physics
Particle physics or high energy physics is the study of fundamental particles and forces that constitute matter and radiation. The fundamental particles in the universe are classified in the Standard Model as fermions (matter particles) an ...
the Froissart bound, or Froissart limit, is a generic constraint that the total
scattering cross section
In physics, the cross section is a measure of the probability that a specific process will take place when some kind of radiant excitation (e.g. a particle beam, sound wave, light, or an X-ray) intersects a localized phenomenon (e.g. a particle o ...
of two colliding high-energy particles cannot increase faster than
, with ''c'' a normalization constant and ''s'' the square of the center-of-mass energy (''s'' is one of the three
Mandelstam variables
In theoretical physics, the Mandelstam variables are numerical quantities that encode the energy, momentum, and angles of particles in a scattering process in a Lorentz-invariant fashion. They are used for scattering processes of two particles ...
).
Froissart, Marcel (1961). Asymptotic Behavior and Subtractions in the Mandelstam Representation. Physical Review 123 (3): 1053-1057.
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Further reading
The Froissart bound on scholarpedia, by M. Froissart
References
Scattering theory
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