English

Comprehensive fits to high energy data for $\sigma$, $\rho$, and $B$ and the asymptotic black-disk limit

High Energy Physics - Phenomenology 2016-01-20 v2

Abstract

We demonstrate that the entirety of the data on proton--proton and antiproton--proton forward scattering between 6 GeV and 57 TeV center-of-mass energy is sufficient to show that σelas/σtot1/2\sigma_{\rm elas}/\sigma_{\rm tot} \rightarrow 1/2, and that 8πB/σtot18\pi B/\sigma_{\rm tot}\rightarrow 1 at very high energies, where BB the forward slope parameter for the differential elastic scattering cross sections. The relations demonstrate convincingly that the asymptotic pppp and pˉp\bar{p}p scattering amplitudes approach those of scattering from a black disk. This result obviously has implications for any new physics that modifies the forward scattering amplitudes.

Keywords

Cite

@article{arxiv.1511.02406,
  title  = {Comprehensive fits to high energy data for $\sigma$, $\rho$, and $B$ and the asymptotic black-disk limit},
  author = {Martin M. Block and Loyal Durand and Phuoc Ha and Francis Halzen},
  journal= {arXiv preprint arXiv:1511.02406},
  year   = {2016}
}

Comments

13 pages, 5 figures; accepted for publication in Physical Review D