Lepton flavor violating Z’ explanation of the muon anomalous magnetic moment
| dc.contributor.author | Altmannshofer, Wolfgang | |
| dc.contributor.author | Chen, Chien-Yi | |
| dc.contributor.author | Bhupal Dev, P.S. | |
| dc.contributor.author | Soni, Amarjit | |
| dc.date.accessioned | 2018-03-26T20:27:35Z | |
| dc.date.available | 2018-03-26T20:27:35Z | |
| dc.date.copyright | 2016 | en_US |
| dc.date.issued | 2016 | |
| dc.description.abstract | We discuss a minimal solution to the long-standing (g−2)μ anomaly in a simple extension of the Standard Model with an extra Z’ vector boson that has only flavor off-diagonal couplings to the second and third generation of leptons, i.e. μ, τ, νμ, ντ and their antiparticles. A simplified model realization, as well as various collider and low-energy constraints on this model, are discussed. We find that the (g−2)μ-favored region for a Z’ lighter than the tau lepton is totally excluded, while a heavier Z’ solution is still allowed. Some testable implications of this scenario in future experiments, such as lepton-flavor universality-violating tau decays at Belle 2, and a new four-lepton signature involving same-sign di-muons and di-taus at HL-LHC and FCC-ee, are pointed out. A characteristic resonant absorption feature in the high-energy neutrino spectrum might also be observed by neutrino telescopes like IceCube and KM3NeT. | en_US |
| dc.description.reviewstatus | Reviewed | en_US |
| dc.description.scholarlevel | Faculty | en_US |
| dc.description.sponsorship | Funded by SCOAP W.A. acknowledges discussions with Stefania Gori and financial support by the University of Cincinnati. The work of C.-Y.C. is sup-ported by NSERC, Canada. Research at the Perimeter Institute is supported in part by the Government of Canada through NSERC and by the Province of Ontario through MEDT. B.D. thanks Julian Heeck for comments on the manuscript. The work of B.D. is sup-ported by the DFG grant No. RO 2516/5-1. B.D. also acknowledges partial support from the TUM University Foundation Fellowship, the DFG cluster of excellence “Origin and Structure of the Uni-verse”, and the Munich Institute for Astro-and Particle Physics (MIAPP) during various stages of this work. The work of A.S. is supported in part by the US DOE Contract No. DE-SC 0012704. B.D. and A.S. thank the organizers of WHEPP XIV at IIT Kanpur for the hospitality during an earlier phase of this work. | en_US |
| dc.identifier.citation | Altmannshofer, W., Chen, C., Bhupal Dev, P.S. & Soni, A. (2016). Lepton flavor violating Z’ explanation of the muon anomalous magnetic moment. Physics Letters B, 762, 389-398. http://dx.doi.org/10.1016/j.physletb.2016.09.046 | en_US |
| dc.identifier.uri | http://dx.doi.org/10.1016/j.physletb.2016.09.046 | |
| dc.identifier.uri | http://hdl.handle.net/1828/9145 | |
| dc.language.iso | en | en_US |
| dc.publisher | Physics Letters B | en_US |
| dc.subject | Muon anomalous magnetic moment | |
| dc.subject | Light gauge boson | |
| dc.subject | Lepton flavor violation | |
| dc.subject.department | Department of Physics and Astronomy | |
| dc.title | Lepton flavor violating Z’ explanation of the muon anomalous magnetic moment | en_US |
| dc.type | Article | en_US |