Single top quark production in $t$-channel at the LHC in Noncommutative Space-Time

Abstract

We study the production cross section of the $t$-channel single top quark at the LHC in the noncommutative space-time. It is shown that the deviation of the $t$-channel single top cross section from the Standard Model value because of noncommutativity is significant when $|\vec{\theta }|\gtrsim 10^{-4}$ GeV${}^{-2}$. Using the present experimental precision in measurement of the $t$-channel cross section, we apply upper limit on the noncommutative parameter. When a single top quark decays, there is a significant amount of angular correlation, in the top quark rest frame between the top spin direction and the direction of the charged lepton momentum from its decay. We study the effect of noncommutativity on the spin correlation and we find that depending on the noncommutative scale, the angular correlation can enhance considerably. Then, we provide limits on the noncommutative scale for various possible relative uncertainties on the spin correlation measurement.

11 pages, 3 figures

References in corpus (9)

• Measurement of the t-channel single top quark production cross section in pp collisions at sqrt(s) = 7 TeV
• Probing the Noncommutative Standard Model at Hadron Colliders
• The Noncommutative Standard Model at O(theta^2)
• The absence of the 4$\psi$ divergence in noncommutative chiral models
• Constraining noncommutative field theories with holography
• Semi-Leptonic Decay of a Polarized Top Quark in the Noncommutative Standard Model
• Renormalizability and Phenomenology of theta-expanded Noncommutative Gauge Field Theory
• TeV Scale Implications of Non Commutative Space time in Laboratory Frame with Polarized Beams
• Neutrino-electron scattering in noncommutative space

Cited by in corpus (9)

• Drell-Yan as an avenue to test noncommutative Standard Model at the Large Hadron Collider
• Hydrogen and muonic-Hydrogen Atomic Spectra in Non-commutative Space-Time
• SO(10) GUTs with large tensor representations on Noncommutative Space-time
• Inferring the covariant $\Theta$-exact noncommutative coupling in the top quark pair production at linear colliders
• The hybrid Seiberg-Witten map, its $\theta$-exact expansion and the antifield formalism
• Higgs Couplings in NonCommutative Standard Model
• Higgs production in $e^{-}{e}^{+}$ collisions as a probe of noncommutativity
• The LHC Drell-Yan Measurements as a Constraint for the Noncommutative Space-Time
• Angular Correlations in Associated Production of Single Top and Higgs with and without anomalous $Wtb$ Couplings