Special supersymmetric features of large invariant mass unpolarized and polarized top-antitop production at the CERN LHC
- 12 April 2005
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 71 (7) , 073003
- https://doi.org/10.1103/physrevd.71.073003
Abstract
We consider the top-anti-top invariant mass distributions for production of unpolarized and polarized top quark pairs at LHC, in the theoretical framework of the MSSM. Assuming a “moderately” light SUSY scenario, we derive the leading logarithmic electroweak contributions at one loop in a region of large invariant mass, , for the unpolarized differential cross section and for the differential longitudinal top polarization asymmetry . We perform a realistic evaluation of the expected uncertainties of the two quantities, both from a theoretical and from an experimental point of view, and discuss the possibility of obtaining, from accurate measurements of the two mass distributions, stringent consistency tests of the model, in particular identifications of large effects.
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This publication has 16 references indexed in Scilit:
- Supersymmetric virtual effects in heavy quark pair production at CERN LHCPhysical Review D, 2004
- SUDAKOV EXPANSIONS AT ONE-LOOP AND BEYOND FOR CHARGED SCALAR AND FERMION PAIR PRODUCTION IN SUSY MODELS AT FUTURE LINEAR COLLIDERSInternational Journal of Modern Physics A, 2003
- Charged Higgs boson production in the 1 TeV domain as a probe of the minimal supersymmetric standard modelPhysical Review D, 2003
- Supersymmetric scalar production in the electroweak Sudakov regime of lepton collidersPhysical Review D, 2002
- Role of universal and nonuniversal Sudakov logarithms in four-fermion processes at TeV energies: The one-loop approximation reexaminedPhysical Review D, 2001
- Probing the SUSY Higgs boson couplings to scalar leptons at high-energy e+e− collidersPhysics Letters B, 2001
- Logarithmic supersymmetric electroweak effects on four-fermion processes at TeV energiesPhysical Review D, 2001
- Top quark production at future lepton colliders in the asymptotic regimePhysical Review D, 2001
- Parity violating asymmetries in top quark pair production at hadron collidersPhysical Review D, 2000
- Top pair production at hadron colliders in non-minimal standard modelsNuclear Physics B, 1998