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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.

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


Authors

Joerg Jaeckel



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.

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
Public URL https://durham-repository.worktribe.com/output/1430745
Related Public URLs http://arxiv.org/abs/1411.5633

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Copyright Statement
Reprinted with permission from the American Physical Society: Physical Review D 91, 093007 © (2015) by the American Physical Society. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modified, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society.






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