The physics case for a neutrino lepton collider in light of the CDF W mass measurement.

We propose a neutrino lepton collider where the neutrino beam is generated from TeV scale muon decays. Such a device would allow for a precise measurement of the W mass based on single W production ν l → W (∗) . Although it is challenging to achieve high instantaneous luminosity with such a collider, we find that a total luminosity of 0.1 fb − 1  can already yield competitive physics results. In addition to a W mass measurement, a rich variety of physics goals could be achieved with such a collider, including W boson precision measurements, heavy leptophilic gauge boson searches and anomalous Z ν ν coupling searches. A neutrino lepton collider is both a novel idea in itself, and may also be a useful intermediate step, with less muon cooling required, towards the muon–muon collider already being pursued by the energy frontier community. A neutrino neutrino or neutrino proton collider may also be interesting future options for the high energy frontier. [ABSTRACT FROM AUTHOR]