Spectrum-doubled heavy vector bosons at the LHC

Appelquist, Thomas; Bai, Yang; Ingoldby, James; Piai, Maurizio

doi:10.1007/JHEP01(2016)109

Title: Spectrum-doubled heavy vector bosons at the LHC

Journal Article · Tue Jan 19 00:00:00 EST 2016 · Journal of High Energy Physics (Online)

DOI:https://doi.org/10.1007/JHEP01(2016)109· OSTI ID:1327314

Appelquist, Thomas ^[1]; Bai, Yang ^[2]; Ingoldby, James ^[1]; Piai, Maurizio ^[3]

Yale Univ., New Haven, CT (United States)
Univ. of Wisconsin-Madison, Madison, WI (United States)
Swansea Univ., Wales (United Kingdom)

We study a simple effective field theory incorporating six heavy vector bosons together with the standard-model field content. The new particles preserve custodial symmetry as well as an approximate left-right parity symmetry. The enhanced symmetry of the model allows it to satisfy precision electroweak constraints and bounds from Higgs physics in a regime where all the couplings are perturbative and where the amount of fine-tuning is comparable to that in the standard model itself. We find that the model could explain the recently observed excesses in di-boson processes at invariant mass close to 2TeV from LHC Run 1 for a range of allowed parameter space. The masses of all the particles differ by no more than roughly 10%. In a portion of the allowed parameter space only one of the new particles has a production cross section large enough to be detectable with the energy and luminosity of Run 1, both via its decay to WZ and to Wh, while the others have suppressed production rates. Furthermore, the model can be tested at the higher-energy and higher-luminosity run of the LHC even for an overall scale of the new particles higher than 3TeV.

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Research Organization:: Yale Univ., New Haven, CT (United States); Univ. of Wisconsin, Madison, WI (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: FG02-92ER40704; FG02-95ER40896

OSTI ID:: 1327314

Journal Information:: Journal of High Energy Physics (Online), Vol. 2016, Issue 1; ISSN 1029-8479

Publisher:: Springer BerlinCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 4 works

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