Static Quantities of the W-Boson in the MSSM

Abstract

We systematically analyze the anomalous dipole $\Delta k_{\gamma }$ and quadrupole $\Delta Q_{\gamma }$ moments of the W gauge bosons in the context of the minimal supersymmetric standard model as functions of the soft SUSY breaking parameters $A_0,m_0,M_{1/2}$ and the top quark mass. The severe constraints imposed by the radiative breaking mechanism of the electroweak symmetry\,$SU(2)\times U(1)$\, are duly taken into account. The supesymmetric values of $\Delta k_{\gamma }$ and $\Delta Q_{\gamma }$ can be largely different, in some cases, from the standard model predictions but of the same order of magnitude for values of \quad $A_0,m_0,M_{1/2}\le \mathcal{O}(1TeV)$. Therefore possible supersymmetric structure can be probed provided the accuracy of measurements for $\Delta k_{\gamma }$, $\Delta Q_{\gamma }$ reaches $10^{-2}-10^{-3}$ and hence hard to be detected at LEP2. If deviations from the standard model predictions are observed at LEP2, most likely these are not due to an underlying supersymmetric structure. In cases where $M_{1/2}\ll A_0,m_0$, the charginos and neutralinos may give substantial contributions saturating the LEP2 sensitivity limits. This occurs when their masses $m_{\tilde{C}},m_{\tilde{Z}}$ turn out to be both light satisfying $m_{\tilde{C}}+m_{\tilde{Z}}\simeq M_W$. However these extreme cases are perturbatively untrustworthy and besides unnatural for they occupy a small region in the parameter space. }

LateX 21 pages,with 4 figures - figs.3&4 sent upon request-, UA/NPPS-15/1994 In this revised version we correct numerical errors regarding the Higgs contributions and some missprints occuring in the original version. ( Revised )

References in corpus (3)

• Model-Independent Analysis of Soft Terms in Effective Supergravity and in String Theory
• Phenomenological Implications of Supersymmetry Breaking by the Dilaton
• Gauge Invariant Three-Boson Vertices in the Standard Model and the Static Properties of the W

Cited by in corpus (25)

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• Unravelling the anomalous gauge boson couplings in $Z{W}^{\pm }$ production at the LHC and the role of spin-$1$ polarizations
• Bilepton effects on the WWV^* vertex in the 331 model with right-handed neutrinos via a SU_L(2)XU_Y(1) covariant quantization scheme
• Static quantities of a neutral bilepton in the 331 model with right-handed neutrinos
• One-loop effects of extra dimensions on the WWγand WWZ vertices
• MSSM radiative contributions to the WW$\gamma$ and WWZ form factors
• Static quantities of the W boson in the SU_L(3) X U_X(1) model with right-handed neutrinos
• Direct detection of vector dark matter through electromagnetic multipoles
• Trilinear Gauge Boson Couplings in the MSSM
• Effects of Lorentz violation through the $\gamma e\to W{\nu }_e$ process in the Standard Model Extension
• Effects of physics beyond the standard model on the neutrino charge radius: an effective Lagrangian approach
• Lorentz-violating effects on pair production of W bosons in photon collisions
• Effective Lagrangian approach to fermion electric dipole moments induced by a CP--violating $WW\gamma$ vertex
• Unravelling the $WW\gamma$ and $WWZ$ Vertices at the Linear Collider: $\bar{\nu }\nu \gamma$ and $\bar{\nu }\nu \bar{q}q$ final states
• Role of beam polarization in the determination of $WW\gamma$ and $WWZ$ couplings from $e^{+}{e}^{-}\to W^{+}{W}^{-}$
• $H^{+}{W}^{-}Z$ contribution to the static quantities of the W boson in the context of Higgs-triplet theories
• CP-odd static electromagnetic properties of the W gauge boson and the t quark via the anomalous tbW coupling
• Fermion contribution to the static quantities of arbitrarily charged vector bosons
• $WWV$ $(V=\gamma ,Z)$ vertex in the Georgi-Machacek model
• On-shell $WW\gamma$ vertex in the T-Parity and non T-Parity Littlest Higgs model
• Constraints on Z' from W^+W^- production at the NLC with polarized beams
• Sum rules for asymptotic form factors in $e^{+}{e}^{-}->W^{+}{W}^{-}$ scattering
• A set of sum rules for anomalous gauge boson couplings