English

Approaching the asymptotics at the LHC

High Energy Physics - Phenomenology 2017-11-20 v1 High Energy Physics - Experiment

Abstract

Recent results on the slope of the pppp diffraction cone measured by TOTEM at 77 and 88 GeV show an unexpected rapid rise in ss, close to B(s)ln2B(s)\sim \ln^2, rather than lns\ln s, typical of the Regge-pole predictions. We show that the new phenomenon can be accommodated by the inclusion of unitarity corrections to a simple Regge (pomeron) pole exchange. Interestingly, the odderon may also promote the acceleration of B(s)B(s). The onset of the new regime may be indicative of the approach to the asymptotic dynamics of strong interactions. We analyse the new data together with other available forward measurable in a unitarized Regge dipole. Unitarization proves crucial in fitting the data, especially those on the slope B(s)B(s) showing a change from the ln(s)\ln (s) to ln2(s)\ln^2 (s) behavior. Having fitted the free parameters of the unitarized model to the data, we predict the behavior of the cross sections and the slope at still higher energies, including those asymptotic.

Keywords

Cite

@article{arxiv.1711.06380,
  title  = {Approaching the asymptotics at the LHC},
  author = {Norbert Bence and László Jenkovszky and István Szanyi},
  journal= {arXiv preprint arXiv:1711.06380},
  year   = {2017}
}

Comments

16 pages, 8 figures; submitted to Physical Review D

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