Dark gauge bosons: LHC signatures of non-abelian kinetic mixing
Author(s)He, Xiao-Gang; Ovanesyan, Grigory; Peng, Tao; Ramsey-Musolf, Michael J.; Arguelles Delgado, Carlos A
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We consider non-abelian kinetic mixing between the Standard Model SU(2)[subscript L] and a dark sector U(1)′ gauge group associated with the presence of a scalar SU(2)[subscript L] triplet. The magnitude of the resulting dark photon coupling ϵ is determined by the ratio of the triplet vacuum expectation value, constrained to by ≲4 GeV by electroweak precision tests, to the scale Λ of the effective theory. The corresponding effective operator Wilson coefficient can be O(1) while accommodating null results for dark photon searches, allowing for a distinctive LHC dark photon phenomenology. After outlining the possible LHC signatures, we illustrate by recasting current ATLAS dark photon results into the non-abelian mixing context.
DepartmentMassachusetts Institute of Technology. Department of Nuclear Science and Engineering
Physics Letters B
Argüelles, Carlos A., et al. “Dark Gauge Bosons: LHC Signatures of Non-Abelian Kinetic Mixing.” Physics Letters B, vol. 770, July 2017, pp. 101–07. © 2017 The Authors
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