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Title: Probing leptophilic dark sectors with hadronic processes

We study vector portal dark matter models where the mediator couples only to leptons. In spite of the lack of tree-level couplings to colored states, radiative effects generate interactions with quark fields that could give rise to a signal in current and future experiments. We identify such experimental signatures: scattering of nuclei in dark matter direct detection; resonant production of lepton–antilepton pairs at the Large Hadron Collider; and hadronic final states in dark matter indirect searches. Furthermore, radiative effects also generate an irreducible mass mixing between the vector mediator and the Z boson, severely bounded by ElectroWeak Precision Tests. We use current experimental results to put bounds on this class of models, accounting for both radiatively induced and tree-level processes. Remarkably, the former often overwhelm the latter.
Authors:
ORCiD logo [1] ;  [2] ;  [3]
  1. Univ. of California, Santa Cruz, CA (United States). Dept. of Physics; Santa Cruz Inst. for Particle Physics, Santa Cruz, CA (United States)
  2. Lab. of Theoretical Physics and High Energies (LPTHE), Paris (France)
  3. European Organization for Nuclear Research (CERN), Geneva (Switzerland). Theoretical Physics Dept.; Pierre and Marie Curie Univ., Paris (France). Inst. of Astrophysics of Paris
Publication Date:
Grant/Contract Number:
SC0010107; 278234
Type:
Published Article
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 771; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Research Org:
Univ. of California, Santa Cruz, CA (United States); Lab. of Theoretical Physics and High Energies (LPTHE), Paris (France)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25); European Research Council (ERC)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
OSTI Identifier:
1360854
Alternate Identifier(s):
OSTI ID: 1424018