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Search for neutralino pair production at the CERN LHC

M. Demirci1,* and A. I. Ahmadov2,†

  • 1Department of Physics, Karadeniz Technical University, 61080 Trabzon, Turkey
  • 2Department of Theoretical Physics, Baku State University, Z. Khalilov Street 23, AZ-1148 Baku, Azerbaijan

  • *Corresponding author. mehmetdemirci@ktu.edu.tr
  • †ahmadovazar@yahoo.com
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Phys. Rev. D 89, 075015 – Published 14 April, 2014

DOI: https://doi.org/10.1103/PhysRevD.89.075015

Abstract

We provide the next-to-leading order (NLO) predictions for the neutralino pair production via quark-antiquark annihilation and gluon-gluon fusion at the CERN Large Hadron Collider, focusing on the lightest neutralino which is likely to be the lightest supersymmetric particle. The dependence of total LO, NLO cross sections, and K factor on the center-of-mass energy, the M2−μ mass plane, the squark mass, and the factorization and renormalization scales is comprehensively analyzed for three different scenarios in the minimal supersymmetric standard model and the constrained minimal supersymmetric standard model. We find that the LO cross section is considerably increased by the NLO correction, and the K factor value is clearly related to the Higgsino/gaugino mass parameters, the squark mass, and the factorization and renormalization scales.

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Phys. Rev. D 89, 075015– Published 14 April, 2014
  • Received 20 December 2013

© 2014 American Physical Society

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