Magnetic Field Dependence of Muonium-antimuonium Conversion
نویسندگان
چکیده
We study the magnetic field dependence of muonium–antimuonium conversion induced by neutral (pseudo)scalar bosons. Only the SS operator contributes to the conversion of polarized muonium, but it gets quenched by a magnetic field of strength 0.1 Gauss or stronger. Conversion induced by SS couplings for unpolarized muonium is independent of magnetic field. Magnetic fields of 0.1 Tesla or stronger starts to suppress conversion induced by P P interactions in the lowest Breit-Rabi level, but gets partially compensated by a rise in conversion probability in the other unpolarized level. in the same way as (V ∓ A)(V ∓ A) and (V ∓ A)(V ± A) operators, respectively.
منابع مشابه
Muonium-antimuonium conversion in models with dilepton gauge bosons.
We examine the magnetic field dependence of the muonium(μe)antimuonium(μe) conversion in the models which accommodate the dilepton gauge bosons. The effective Hamiltonian for the conversion due to dileptons turns out to be in the (V −A)× (V +A) form and, in consequence, the conversion probability is rather insensitive to the strength of the magnetic field. The reduction is less than 20% for up ...
متن کاملNew Bounds from Searching for Muonium to Antimuonium Conversion
A new upper limit for the probability of spontaneous muonium to antimuonium conversion was established at P MM ≤ 8.2 · 10 (90%C.L.) in 0.1 T magnetic field, which implies consequences for speculative extensions to the standard model. Coupling parameters in R-parity violating supersymmetry and the mass of a flavour diagonal bileptonic gauge boson can be significantly restricted. A Z8 model with ...
متن کاملMuonium-Antimuonium Oscillations in an extended Minimal Supersymmetric Standard Model with right-handed neutrinos
The electron and muon number violating muonium-antimuonium oscillation process in an extended Minimal Supersymmetric Standard Model is investigated. Modifying the Minimal Supersymmetric Standard Model by the inclusion of three right-handed neutrino superfields and allowing only intra-generation lepton number violation but not inter-generation lepton number mixing, the muonium-antimuonium conver...
متن کاملar X iv : h ep - p h / 02 08 06 2 v 1 6 A ug 2 00 2 Minimal 3 - 3 - 1 model , lepton mixing and muonium - antimuonium conversion
We investigate constraints imposed by lepton mixing and muonium-antimuonium conversion in a minimal version of 3 − 3 − 1 model. Demanding agreement with recent results on neutrino oscillation we show that minimal 3 − 3 − 1 has to be extended in order to correctly accommodate its mixing pattern. On the other hand muonium-antimuonium conversion puts a lower bound on the vector bilepton mass in a ...
متن کاملar X iv : h ep - p h / 02 08 06 2 v 2 1 4 M ay 2 00 3 Minimal 3 - 3 - 1 model , lepton mixing and muonium - antimuonium conversion
The recent experimental results on neutrino oscillation and on muonium-antimuonium conversion require extension of the minimal 3-3-1 model. We review the constraints imposed to the model by those measurements and suggest a pattern of leptonic mixing, with charged leptons in a non-diagonal basis, which accounts for the neu-trino physics and circumvents the tight muonium-antimuonium bounds on the...
متن کامل