Lepton flavor violating signals of the neutral top-pion in future lepton colliders

2005/06/20 by C. X. Yue, Chong-Xing Yue, Zheng-Jun Zong +3
Physics and Astronomy · #Electron #Energy (signal processing) #Gauge boson #Gauge theory #Lepton #Neutrino Physics Research #Nuclear physics #Particle Detector Development and Performance #Particle physics #Particle physics theoretical and experimental studies #Physics #Pion #Quantum mechanics #Technicolor #hep-ph

paper · pdf · doi:10.1103/physrevd.71.115011

published as Phys.Rev.D71:115011,2005 · References added, some typos corrected. Version to be published in Phys. Rev. D

arxiv created 2005/06/20 · openalex publication_date 2005/06/27 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

The presence of the top-pions \ensuremathπ_t^0,\ifmmode±\else\textpm\fi in the low-energy spectrum is an inevitable feature of the topcolor scenario. Taking into account the constraints of the present experimental limit of the lepton flavor violating (LFV) process \ensuremathμ\ensuremath→e\ensuremathγ on the free parameters of topcolor-assisted technicolor models, we study the contributions of the neutral top-pion \ensuremathπ_t⁰ to the LFV processes \ensuremathμ⁺\ensuremathμ^\ensuremath-\ensuremath→\ensuremathτ\ensuremathμ (or \ensuremathτe), \ensuremathγ\ensuremathγ\ensuremath→\ensuremathτ\ensuremathμ (or \ensuremathτe), e⁺e^\ensuremath-\ensuremath→\ensuremathτ\ensuremathμ, and e\ensuremathγ\ensuremath→e\ensuremathπ_t⁰\ensuremath→e\ensuremathτ\ensuremathμ(e) via the flavor changing couplings \ensuremathπ_t⁰l_il_j and discuss the possibility of searching for the LFV signals via these processes in future lepton colliders.

Citations

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