# Regge Trajectories: What Are They?

• alice137
In summary, Regge trajectories are a concept that relates the masses of certain particles to their angular momentum, specifically in meson and baryon resonances. While it can be difficult to find information on this topic online, there are some helpful sources such as a blog post and a paper that provide explanations and graphs.
alice137
what are regge trajectories?

It's a shame that it's hard to find introductions to Regge trajectories on the net. You might try a post on the subject (comparing them to Koide's mass formula) on my blog because I think there's a reasonable explanation, and some links to other sources of information on them:
http://carlbrannen.wordpress.com/2007/12/16/regge-trajectories-and-koides-formula/

In short, Regge trajectories are not "trajectories" as most know the word, but instead are relations among the masses of certain particles.

Regge "trajectories" suggest a relation between the angular momentum and
mass of meson and baryon resonances. It's indeed hard to find some decent
information on the internet but this paper has quite a few graphs.

http://arxiv.org/abs/hep-ph/0309075

Regards, Hans

## What are Regge Trajectories?

Regge trajectories are a concept in particle physics that describe the relationship between the spin and mass of a particle. They are named after the Italian physicist Tullio Regge, who first proposed them in the 1950s.

## How are Regge Trajectories calculated?

Regge trajectories are calculated using a mathematical model known as the Regge form, which relates the spin of a particle to its mass and angular momentum. This model has been successfully applied to explain the behavior of a wide range of particles, including mesons, baryons, and even some exotic particles.

## What is the significance of Regge Trajectories?

Regge trajectories have been instrumental in helping physicists understand the structure and interactions of subatomic particles. They provide a framework for organizing and predicting the properties of particles based on their spin and mass, and have been a key component in the development of the Standard Model of particle physics.

## What are some current areas of research related to Regge Trajectories?

Currently, scientists are using Regge trajectories to explore the properties of exotic particles, such as those with multi-quark configurations. There is also ongoing research on the relationship between Regge trajectories and string theory, which proposes that particles are actually tiny strings vibrating at different frequencies.

## What are some potential future applications of Regge Trajectories?

Regge trajectories have the potential to help scientists uncover new particles and understand the fundamental forces of nature in a more comprehensive way. They could also play a role in developing new technologies, such as more efficient energy sources or advanced medical imaging techniques.

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