Low energy physics and left-right symmetry: bounds on the model parameters

Czakon, M.; Gluza, J.; Zrałek, M.

doi:10.1016/s0370-2693(99)00567-5

Cited by 40 publications

(45 citation statements)

References 17 publications

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“…One may compare this values with the bounds from [16] |Im(g a )| = |Im(g v )| < 0.013. Although the improvement of this restrictions is not too big, the experiment measuring the asymmetry could put model independent restrictions on the vector and pseudovector parameters.…”

Section: Introductionmentioning

confidence: 98%

T-odd correlation in theK+→πlνγdecays beyond the standard model

2003

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The dependence of the T -odd correlation on the effective Lagrangian parameters in the K + → πlνγ, l = e, µ decays is analyzed. It is shown that the introduced observable is perspective in a search for new physics in the vector and pseudovector sector of the Lagrangian. As for scalar and pseudoscalar sectors, the T -odd correlation studies will not allow one to improve current restrictions on parameters of models beyond SM.

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Section: Introductionmentioning

confidence: 98%

T-odd correlation in theK+→πlνγdecays beyond the standard model

2003

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“…Experimentally, the electroweak precision data (EWPD) puts an upper bound on ξ < 0.013 [48,49], which tightens to ξ < 0.0025 [48] if the CP -violating phases in the mixing matrix for RH quarks are small. 3 As far as the RH gauge bosons are concerned, flavor and CP violating processes in K and B meson mixing provide an absolute lower bound on M W R > ∼ 2.9 TeV [30].…”

Section: Review Of the Minimal Left-right Symmetric Modelmentioning

confidence: 99%

TeV-scale left-right symmetry and large mixing effects in neutrinoless double beta decay

2015

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We analyze various contributions to neutrinoless double beta decay (0νββ) in a TeV-scale Left-Right Symmetric Model (LRSM) for type-I seesaw dominance. We find that the momentum-dependent effects due to W L − W R exchange (λ-diagram) and W L − W R mixing (η-diagram) could give dominant contributions to the 0νββ amplitude in a wide range of the LRSM parameter space. In particular, for a relatively large W L − W R mixing, the η-contribution by itself could saturate the current experimental limit on the 0νββ half-life, thereby providing stringent constraints on the relevant LRSM parameters, complementary to the indirect constraints derived from lepton flavor violating observables. In a simplified scenario parametrized by a single light-heavy neutrino mixing, the inclusion of the λ and η contributions leads to significantly improved 0νββ constraints on the light-heavy neutrino mixing as well as on the W L − W R mixing parameters. We also present a concrete TeV-scale LRSM setup, where the mixing effects are manifestly enhanced, and discuss the interplay between 0νββ, lepton flavor violation and electric dipole moment constraints.

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“…The bound on the mixing angle between W R and W L is of the order ζ W < O(10 −2 ) [33,46]. Direct limits on the Z R mass from electroweak precision data, such as lepton universality at the Z peak, are of the order O(1) TeV [47][48][49]. Within the minimal LRSM one also has the theoretical relation m Z R ≈ 1.7m W R for g R ≈ g L , so that indirect limits via the bounds on the W R mass also yield more stringent constraints on the Z R mass.…”

Section: Experimental Datamentioning

confidence: 99%

Heavy neutrinos and lepton flavor violation in left-right symmetric models at the LHC

et al. 2012

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We discuss lepton flavour violating processes induced in the production and decay of heavy right-handed neutrinos at the LHC. Such particles appear in left-right symmetrical extensions of the Standard Model as the messengers of neutrino mass generation, and can have masses at the TeV scale. We determine the expected sensitivity on the right-handed neutrino mixing matrix, as well as on the righthanded gauge boson and heavy neutrino masses. By comparing the sensitivity of the LHC with that of searches for low energy LFV processes, we identify favourable areas of the parameter space to explore the complementarity between LFV at low and high energies.

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Low energy physics and left-right symmetry: bounds on the model parameters

Cited by 40 publications

References 17 publications

T-odd correlation in theK+→πlνγdecays beyond the standard model

T-odd correlation in theK+→πlνγdecays beyond the standard model

TeV-scale left-right symmetry and large mixing effects in neutrinoless double beta decay

Heavy neutrinos and lepton flavor violation in left-right symmetric models at the LHC

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