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Updated: Apr 25, 2026

Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
Hidden GeV-scale interactions of quarks
Bogdan A Dobrescu1, Claudia Frugiuele1
1Theoretical Physics Department, Fermilab, Batavia, Illinois 60510, USA.
Abstract:
We explore quark interactions mediated by new gauge bosons of masses in the 0.3-50 GeV range. A tight upper limit on the gauge coupling of light Z(') bosons is imposed by the anomaly cancellation conditions in conjunction with collider bounds on new charged fermions. Limits from quarkonium decays are model dependent, while electroweak constraints are mild. We derive the limits for a Z(') boson coupled to baryon number and then construct a Z(') model with relaxed constraints, allowing quark couplings as large as 0.2 for a mass of a few GeV.
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