New gauge boson Z' and lepton flavor violating decays and production of vector mesons

Abstract

Considering the constraints on the lepton flavor violating (LFV) couplings of the new gauge boson $Z^{\prime }$ to ordinary leptons from the experimental upper limit for the LFV process $\ell \to 3{\ell }^{\prime }$, we calculate the contributions of $Z^{\prime }$ to the LFV decays $V\to {\ell }_i{\ell }_j$ with $V\in \{\varphi ,J/\Psi ,\Psi (2S),{{\rm Y}}^{(n)}\}$ and $\tau \to \mu (e)\varphi$ in the context of several $Z^{\prime }$ models. We find that all $Z^{\prime }$ models considered in this paper can produce significant contributions to these decay processes and make the value of the branching ratio $Br(\tau \to e\varphi )$ above its experimental upper limit. The experimental upper limit of $\tau \to e\varphi$ can give more severe constraints on these $Z^{\prime }$ models than those given by the rare decay process $\tau \to 3e$.

Reference added, remove some typos; to be published in PRD

References in corpus (7)

• The ${\rm Y}$ and ${{\rm Y}}^{\prime }$ Leptonic Widths, $a_{\mu }^b$ and $m_b$ from full lattice QCD
• Lepton flavor violating decays of vector quarkonia and of the $Z$ boson
• NLO+NLL limits on W' and Z' gauge boson masses in general extensions of the Standard Model
• New bounds on lepton flavor violating decays of vector mesons and the Z0 boson
• Higher angular momentum states of bottomonium in lattice NRQCD
• Probing unparticle theory via lepton flavor violating process $J/\psi \to l{l}^{\prime }$ at BESIII
• LFV couplings of the extra gauge boson Z' and leptonic decay and production of pseudoscalar mesons

Cited by in corpus (7)

• Lepton flavor violating Z' explanation of the muon anomalous magnetic moment
• Lepton flavor violating quarkonium decays
• Constraints on $Z^{\prime }$ Boson within Minimal Flavor Violation
• Looking for New Physics via Semi-leptonic and Leptonic rare decays of $D$ and $D_s$
• The lepton flavor violating decays of vector mesons in the MRSSM
• Exploring hadronic de-excitation via Lepton Flavor Violation
• The LFV decays $B_{d,s}^0\to e\mu (e\tau ,\mu \tau )$ with one neutral singlet scalar