Reggeized

Reggeized is a term used in theoretical physics, specifically in the context of Regge theory. Regge theory is a mathematical framework that describes the behavior of scattering amplitudes in quantum field theory at high energies. When a particle is described as "reggeized," it means that its contribution to the scattering process is being represented by a Regge pole or a Regge trajectory.

In essence, reggeization is a technique for resumming an infinite series of Feynman diagrams that become dominant at high energies. Instead of considering individual particle exchanges, reggeization considers the exchange of composite states, known as Reggeons, which behave differently from elementary particles. This approach simplifies the calculation of scattering amplitudes and provides insights into the structure of hadrons and their interactions.

The concept of reggeization was developed by Tullio Regge in the early 1960s. It has been particularly successful in describing the scattering of strongly interacting particles (hadrons) at high energies, where traditional perturbative methods often fail. The reggeized description allows physicists to understand phenomena like the emergence of power-law behavior in scattering cross-sections and the exchange of vacuum quantum numbers at high energies. It is a crucial tool for understanding the non-perturbative aspects of quantum chromodynamics.