Of Higgs, Unitarity and Other Questions
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Ferrari_Of Higgs.pdf
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220.71 KB
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Author(s)
Bettinelli, Daniele
Ferrari, Ruggero
Quadri, Andrea
Date Issued
May 2011
Journal
Proceedings of the Steklov Institute of Mathematics
Publisher
Pleiades Publishing
Citation
Bettinelli, D., R. Ferrari, and A. Quadri. “Of Higgs, Unitarity and Other Questions.” Proceedings of the Steklov Institute of Mathematics 272.1 (2011): 22–38.
Version
Author's final manuscript
Abstract
On the verge of conclusive checks on the Standard Model by the LHC, we discuss some of the basic assumptions. The reason for this analysis stems from a recent proposal of an electroweak model based on a nonlinearly realized gauge group SU(2) ⊗ U(1), where, in the perturbative approximation, there is no Higgs boson. The model enjoys the Slavnov-Taylor identities and therefore the perturbative unitarity. On the other hand, it is commonly believed that the existence of the Higgs boson is entangled with the property of unitarity, when high energy processes are considered. The argument is based mostly on the Froissart bound and on the equivalence theorem. In this paper we briefly review some of our objections to the validity of such arguments. Some open questions are pointed out, in particular on the limit of zero mass for the vector mesons and on the fate of the longitudinal polarizations.
Description
March 13, 2011
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike 3.0
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DOI of Published Version
https://doi.org/10.1134/s0081543811010044
