Z′ induced forward dominant processes in μTRISTAN experiment.

General U (1) extension of the Standard Model (SM) is a well motivated beyond the Standard Model (BSM) scenario where three generations of right handed neutrinos (RHNs) are introduced to cancel gauge and mixed gauge-gravity anomalies. After the U (1) X is broken, RHNs participate in the seesaw mechanism to generate light neutrino masses satisfying neutrino oscillation data. In addition to that, a neutral gauge boson Z ′ is evolved which interacts with the left and right handed fermions differently manifesting chiral nature of the model which could be probed in future collider experiments. As a result, if we consider μ + e − and μ + μ + collisions in μ TRISTAN experiment Z ′ mediated 2 → 2 scattering will appear in t − and u -channels depending on the initial and final states being accompanied by the photon and Z mediated interactions. This will result well motivated resulting forward dominant scenarios giving rise to sizable left-right asymmetry. Estimating constraints on general U (1) coupling from LEP-II and LHC for different U (1) X charges, we calculate differential and integrated scattering cross section and left-right asymmetry for μ + e − → μ + e − and μ + μ + → μ + μ + processes which could be probed at μ TRISTAN experiment further enlightening the interaction between Z ′ and charged leptons and the U (1) X breaking scale. [ABSTRACT FROM AUTHOR]