Little solution to the little hierarchy problem: A vectorlike generation
Name
Graham-2010-Little solution to t.pdf
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Author(s)
Graham, Peter W.
Ismail, Ahmed
Saraswat, Prashant
Rajendran, Surjeet
Date Issued
March 2010
Journal
Physical Review D
Publisher
American Physical Society
Citation
Graham, Peter W. et al. “Little solution to the little hierarchy problem: A vectorlike generation.” Physical Review D 81.5 (2010): 055016. © 2010 The American Physical Society
Version
Final published version
Abstract
We present a simple solution to the little hierarchy problem in the minimal supersymmetric standard model: a vectorlike fourth generation. With O(1) Yukawa couplings for the new quarks, the Higgs mass can naturally be above 114 GeV. Unlike a chiral fourth generation, a vectorlike generation can solve the little hierarchy problem while remaining consistent with precision electroweak and direct production constraints, and maintaining the success of the grand unified framework. The new quarks are predicted to lie between ∼300–600 GeV and will thus be discovered or ruled out at the LHC. This scenario suggests exploration of several novel collider signatures.
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
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.81.055016
