Upper limit on the scale of new physics phenomena from rising cross sections in high multiplicity Higgs and vector boson events

Jaeckel, Joerg; Khoze, Valentin V.

doi:10.1103/physrevd.91.093007

Upper limit on the scale of new physics phenomena from rising cross sections in high multiplicity Higgs and vector boson events

Jaeckel, Joerg; Khoze, Valentin V.

Authors

Joerg Jaeckel

Professor Valentin Khoze valya.khoze@durham.ac.uk
Professor

Abstract

In very high energy scattering events, production of multiple Higgs and electroweak gauge bosons becomes possible. Indeed the perturbative cross section for these processes grows with increasing energy, eventually violating perturbative unitarity. In addition to perturbative unitarity we also examine constraints on high multiplicity processes arising from experimentally measured quantities. These include the shape of the Z-peak and upper limits on scattering cross sections of cosmic rays. We find that the rate of high multiplicity electroweak processes will exceed these upper limits at energies not significantly above what can be currently tested experimentally. This leaves two options: (1) The electroweak sector becomes truly nonperturbative in this regime or (2) additional physics beyond the standard model is needed. In both cases novel physics phenomena must set in before these energies are reached. Based on the measured Higgs mass we estimate the critical energy to be in the range of 103 TeV but we also point out that it can potentially be significantly less than that.

Citation

Jaeckel, J., & Khoze, V. V. (2015). Upper limit on the scale of new physics phenomena from rising cross sections in high multiplicity Higgs and vector boson events. Physical Review D, 91, Article 093007. https://doi.org/10.1103/physrevd.91.093007

Journal Article Type	Article
Publication Date	May 21, 2015
Deposit Date	Apr 23, 2015
Publicly Available Date	Jun 15, 2015
Journal	Physical Review D
Print ISSN	1550-7998
Electronic ISSN	1550-2368
Publisher	American Physical Society
Peer Reviewed	Peer Reviewed
Volume	91
Article Number	093007
DOI	https://doi.org/10.1103/physrevd.91.093007
Related Public URLs	http://arxiv.org/abs/1411.5633

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