Semi-Leptonic Decay of a Polarized Top Quark in the Noncommutative Standard Model

Abstract

In this paper we study the noncommutative effects to the lepton spectrum from the decay of a polarized top quark. It is shown that the lowest contribution comes from the quadratic terms of the noncommutative parameter. The deviations from the standard model are significant for small values of the noncommutative characteristic scale. However, the charged lepton spin correlation coefficient has a remarkable deviation from the standard model from very low values of the noncommutative characteristic scale to 1 TeV.

arXiv comment8 pages, 4 figures

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• Noncommutative quantum mechanics of a harmonic oscillator under linearized gravitational waves
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• Massive Neutrino in Non-commutative Space-time
• Renormalisability of the matter determinants in noncommutative gauge theory in the enveloping-algebra formalism
• Location and Direction Dependent Effects in Collider Physics from Noncommutativity
• Noncommutative quantum mechanics of a test particle under linearized gravitational waves
• Bounds on the Parameter of Noncommutativity from Supernova SN1987A
• Lorentz Violation in the Higgs Sector and Noncommutative Standard Model
• Singlet particles as cold dark matter in noncommutative space-time
• Resonant-bar detectors of gravitational wave as possible probe of the noncommutative structure of space
• Galilean symmetry in noncommutative Gravitational Quantum Well
• Footprint of spatial noncommutativity in resonant detectors of gravitational wave
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• Noncommutative Standard Model in Top Quark Sector
• Inferring the covariant $\Theta$-exact noncommutative coupling in the top quark pair production at linear colliders
• Noncommutative quantum mechanics of simple matter systems interacting with circularly polarized gravitational waves
• Noncommutative QED+QCD and $\beta$-function for QED
• Higgs production in $e^{-}{e}^{+}$ collisions as a probe of noncommutativity
• Nucleon structure functions in noncommutative space-time
• Lorentz violation parameters and noncommutative scale
• Monopoles, noncommutative gauge theories in the BPS limit and some simple gauge groups
• Azimuthal polarization of polarized top quark in noncommutative standard model
• The Angular Correlations in Top Quark Decays in Standard Model Extensions