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Title: Twistor String Theory and QCD

Abstract

The author reviews recent progress in using twistor-inspired methods to compute perturbative scattering amplitudes in gauge theory, for application to collider physics.

Authors:
;
Publication Date:
Research Org.:
Stanford Linear Accelerator Center (SLAC)
Sponsoring Org.:
USDOE
OSTI Identifier:
877520
Report Number(s):
SLAC-PUB-11583
hep-ph/0512111; TRN: US200608%%278
DOE Contract Number:
AC02-76SF00515
Resource Type:
Conference
Resource Relation:
Conference: Invited talk at EPS International Europhysics Conference on High Energy Physics (HEP-EPS 2005), Lisbon, Portugal, 21-27 Jul 2005
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; HIGH ENERGY PHYSICS; PHYSICS; QUANTUM CHROMODYNAMICS; SCATTERING AMPLITUDES; Phenomenology-HEP,HEPEX, HEPPH, HEPTH

Citation Formats

Dixon, Lance J., and /SLAC. Twistor String Theory and QCD. United States: N. p., 2005. Web.
Dixon, Lance J., & /SLAC. Twistor String Theory and QCD. United States.
Dixon, Lance J., and /SLAC. Thu . "Twistor String Theory and QCD". United States. doi:. https://www.osti.gov/servlets/purl/877520.
@article{osti_877520,
title = {Twistor String Theory and QCD},
author = {Dixon, Lance J. and /SLAC},
abstractNote = {The author reviews recent progress in using twistor-inspired methods to compute perturbative scattering amplitudes in gauge theory, for application to collider physics.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Dec 08 00:00:00 EST 2005},
month = {Thu Dec 08 00:00:00 EST 2005}
}

Conference:
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  • Surface critical phenomena and the related onset of Goldstone modes represent fundamental properties of the confining flux in Quantum Chromodynamics. New ideas on surface roughening and their implications for lattice studies of quark confinement and string formation are presented. Problems with a simple string description of the large Wilson surface are discussed.
  • The low energy excitation spectrum of the critical Wilson surface is discussed between the roughening transition and the continuum limit of lattice QCD. The fine structure of the spectrum is interpreted within the framework of two-dimensional conformal field theory.
  • We discuss new results in QCD obtained with string-based methods. These methods were originally derived from superstring theory and are significantly more efficient than conventional Feynman rules. This technology was a key ingredient in the first calculation of the one-loop five-gluon amplitude. We also present a conjecture for a particular one-loop helicity amplitude with an arbitrary number of external gluons.
  • No abstract prepared.
  • We propose various ways of adding mass terms to three-dimensional twistor string theory. We begin with a review of mini-twistor space--the reduction of D=4 twistor space to D=3. We adapt the two proposals for twistor string theory, Witten's and Berkovits's, to D=3 super Yang-Mills theory. In Berkovits's model, we identify the enhanced R symmetry. We then construct B-model topological string theories that, we propose, correspond to D=3 Yang-Mills theory with massive spinors and massive and massless scalars in the adjoint representation of the gauge group. We also analyze the counterparts of these constructions in Berkovits's model. Some of our constructionsmore » can be lifted to D=4, where infinitesimal mass terms correspond to vacuum expectation values of certain superconformal gravity fields.« less