کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5495527 | 1528794 | 2016 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Lepton flavor violating Zâ² explanation of the muon anomalous magnetic moment
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We discuss a minimal solution to the long-standing (gâ2)μ anomaly in a simple extension of the Standard Model with an extra Zâ² vector boson that has only flavor off-diagonal couplings to the second and third generation of leptons, i.e. μ,Ï,νμ,Î½Ï 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 (gâ2)μ-favored region for a Zâ² lighter than the tau lepton is totally excluded, while a heavier Zâ² 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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 762, 10 November 2016, Pages 389-398
Journal: Physics Letters B - Volume 762, 10 November 2016, Pages 389-398
نویسندگان
Wolfgang Altmannshofer, Chien-Yi Chen, P.S. Bhupal Dev, Amarjit Soni,