English

Soft interaction at high energy and N=4 SYM

High Energy Physics - Phenomenology 2009-06-19 v2

Abstract

In this paper we show that the N=4 SYM total cross section violates the Froissart theorem, and in the huge range of energy this cross section is proportional to s1/3s^{1/3}. The graviton reggeization will change this increase to the normal logarithmic behaviour σln2s\sigma \propto \ln^2 s. However, we demonstrated that this happens at ultra high energy, much higher than the LHC energy. In the region of accessible energy we need to assume that there is a different source for the total cross section, with the value of the cross section about 40 mb. With this assumption we successfully describe σtot,σel\sigma_{tot}, \sigma_{el} and σdiff\sigma_{diff} for the accessible range of energy from the fixed target Fermilab to the Tevatron energies. It turns out that the N=4 SYM mechanism can be responsible only for a small part of the inelastic cross section for this energy region (about 2mb2 mb). However, at the LHC energy the N=4 SYM theory can describe the multipartticle production with σin28mb\sigma_{in} \approx 28 mb. The second surprise is the fact that the total cross section and the diffraction cross section can increase considerably from the Tevatron to the LHC energy. The bad description of BelB_{el} gives the strong argument that the non N=4 SYM background should depend on energy. We believe that we have a dilemma: to find a new mechanism for the inelastic production in the framework of N=4 SYM other than the reggeized graviton interaction, or to accept that N=4 SYM is irrelevant to any experimental data that has been measured before the LHC era.

Cite

@article{arxiv.0902.3122,
  title  = {Soft interaction at high energy and N=4 SYM},
  author = {E. Levin and I. Potashnikova},
  journal= {arXiv preprint arXiv:0902.3122},
  year   = {2009}
}

Comments

13 pages, 6 figures in eps files

R2 v1 2026-06-21T12:12:55.245Z