The signatures of the new particles h2 and Zμτ at e-p colliders in the U(1)Lμ-Lτ model

• Published in: The European physical journal. C, Particles and fields Particles and fields, 2019-12, Vol.79 (12)
• Main Authors: Hou, Jin-Xin, Yue, Chong-Xing
• Format: Article
• Language: English
• Subjects: Astronomy; Astrophysics and Cosmology; Beams (radiation); Channels; Constraint modelling; Elementary Particles; Hadrons; Heavy Ions; Luminosity; Measurement Science and Instrumentation; Nuclear Energy; Nuclear Physics; Parameters; Particle decay; Physics; Physics and Astronomy; Quantum Field Theories; Quantum Field Theory; Regular Article - Theoretical Physics; String Theory
• ISSN: 1434-6044; 1434-6052
• DOI: 10.1140/epjc/s10052-019-7432-x

Considering the superior performances of the future e-p colliders, LHeC and FCC-eh, we discuss the feasibility of detecting the extra neutral scalar h 2 and the light gauge boson Z μ τ , which are predicted by the U ( 1 ) L μ - L τ model. Taking into account the experimental constraints on the relevant free parameters, we consider all possible production channels of h 2 and Z μ τ at e-p colliders and further investigate their observability through the optimal channels in the case of the beam polarization P ( e - ) = - 0.8 . We find that the signal significance above 5 σ of h 2 as well as Z μ τ detecting can be achieved via process and a 5 σ sensitivity of Z μ τ detecting can be gained via process at e-p colliders with appropriate parameter values and a designed integrated luminosity. However, the signals of h 2 decays into pair of SM particles are difficult to be detected.