Gauge Coupling Unification and Light Exotica in String Theory
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Publisher:American Physical Society
Citation:Stuart Raby, Akın Wingerter, "Gauge Coupling Unification and Light Exotica in String Theory," Physical Review Letters 99, no. 5 (2007), doi:10.1103/PhysRevLett.99.051802
In this Letter we consider the consequences for the CERN Large Hadron Collider of light vectorlike exotica with fractional electric charge. It is shown that such states are found in orbifold constructions of the heterotic string. Moreover, these exotica are consistent with gauge coupling unification at one loop, even though they do not come in complete multiplets of SU(5).