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07:46
Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
Amplitude for N-gluon superstring scattering.
Stephan Stieberger1, Tomasz R Taylor
1Arnold-Sommerfeld Center for Theoretical Physics, Ludwig-Maximilians-Universität München, Theresienstrasse 37, 80333 München, Germany.
Physical Review Letters
|December 13, 2006
Summary
This study presents exact scattering amplitudes for open superstring processes involving N gluons. It details string corrections to Yang-Mills amplitudes for maximally helicity violating configurations.
Area of Science:
- High-energy physics
- String theory
- Quantum field theory
Background:
- Scattering processes are fundamental in understanding particle interactions.
- Open superstring theory describes interactions of strings with endpoints.
- Gluon scattering amplitudes are crucial in quantum chromodynamics.
Purpose of the Study:
- To derive exact scattering amplitudes for N-gluon processes in open superstring theory.
- To investigate the role of the Regge slope parameter (alpha') in these amplitudes.
- To compute string corrections to standard N-gluon amplitudes.
Main Methods:
- Semiclassical approximation of string world-sheet.
- Analysis of gluon creation and annihilation at the boundary.
- Derivation of exact amplitude expressions valid to all orders in alpha'.
Main Results:
- Exact scattering amplitudes for N=4, 5, and 6 maximally helicity violating gluonic configurations.
- Expressions are valid for all orders in the Regge slope alpha'.
- Leading O(alpha'^2) string corrections to zero-slope N-gluon Yang-Mills amplitudes obtained.
Conclusions:
- The study provides precise, all-order expressions for multi-gluon scattering in open superstring theory.
- String theory offers corrections to established Yang-Mills amplitudes.
- Findings are significant for understanding high-energy scattering phenomena.
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