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Published July 10, 2017 | Published + Submitted
Journal Article Open

Dark gauge bosons: LHC signatures of non-Abelian kinetic mixing


We consider non-abelian kinetic mixing between the Standard Model SU(2)_L and a dark sector U(1)′ gauge group associated with the presence of a scalar SU(2)_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.

Additional Information

© 2017 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3. Received 15 May 2016, Revised 4 April 2017, Accepted 18 April 2017, Available online 20 April 2017. We thank Patrick Draper, Jesse Thaler, and Jiang-Hao Yu for useful discussions. This work was supported in part by U.S. Department of Energy contract DE-SC0011095 (G.O., T.P., and M.J.R.-M.). XGH was supported in part by MOE Academic Excellent Program (Grant No. 105R891505) and MOST of ROC (Grant No. MOST 104-2112-M-002-015-MY3), and in part by NSFC of PRC (Grant No. 11575111). This work was also supported by Key Laboratory for Particle Physics, Astrophysics and Cosmology, Ministry of Education, and Shanghai Key Laboratory for Particle Physics and Cosmology (SKLPPC) (Grant No. 11DZ2260700). He also thanks Korea Institute for Advanced Study (KIAS) for their hospitality during the completion of this work. CA was supported in part by the National Science Foundation (ANT-0937462, PHY-1306958, PHY-1505855, and PHY-1505858) and by the University of Wisconsin Research Committee with funds granted by the Wisconsin Alumni Research Foundation.

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Published - 1-s2.0-S0370269317303118-main.pdf

Submitted - 1604.00044.pdf


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August 19, 2023
August 19, 2023