Speaker
Description
We discuss how gauge forces not coupled at tree-level to muons can be investigated at a muon collider by studying scattering of muons into pairs of fermions that feel such force. We discuss how these scatterings are mediated by new physics couplings that can be seen alternatively as couplings of the muons that arise at loop-level or as four-fermion operators involving muons and the species of fermions coupled to the new gauge bosons.
We derive bounds on these ``muophobic'' gauge bosons and demonstrate that with the foreseen luminosity the muon collider, in spite of the coupling being originated only at loop level, can be sensitive to masses of the new gauge bosons up to several times the center of mass energy of the collider. These results show that muon collider reach for new physics extends well above the direct kinematical reach for on-shell production of new states, as the precision attained by the muon collider makes it sensitive to heavy new physics, with good sensitivity even when the new phyiscs is not directly coupled to muons.
| What category does your poster fit in? | Theory |
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