Physics of Particles and Nuclei Letters

, Volume 6, Issue 3, pp 181–189 | Cite as

On pair production of scalar top quarks in e + e collisions at ILC and a possibility of their mass reconstruction

  • A. Bartl
  • W. Majerotto
  • K. Mönig
  • A. N. Skachkova
  • N. B. Skachkov
Physics of Elementary Particles and Atomic Nuclei. Theory


We study pair production of scalar top quarks (stop, \( \tilde t_1 \)) in e + e collisions with the subsequent decay of the top squarks into b quarks and charginos \( \tilde t_1 \to b\tilde \chi _1^ \pm \). We simulate this process by using PYTHIA6.4 for the beam energy 2E b = \( \sqrt 2 \) = 350, 400, 500, 800, 1000 GeV. A set of criteria for physical variables is proposed, which provides good separation of stop signal events from top quark pair production being the main background. These criteria allow us to reconstruct the mass of the top squark with an integrated luminosity of 1000 fb−1 provided that the neutralino mass is known.

PACS numbers

13.66.-a 13.66.Hk 


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Copyright information

© Pleiades Publishing, Ltd. 2009

Authors and Affiliations

  • A. Bartl
    • 1
    • 2
  • W. Majerotto
    • 3
  • K. Mönig
    • 4
  • A. N. Skachkova
    • 5
  • N. B. Skachkov
    • 5
  1. 1.Faculty of PhysicsUniversity of ViennaViennaAustria
  2. 2.AHEP Group, Instituto de Fisica Corpuscular—C.S.I.C.Universidad de Valencia, Edificio Institutos de InvestigacionValenciaSpain
  3. 3.Institute for High Energy Physics (HEPHY Vienna)ViennaAustria
  4. 4.DESYZeuthenGermany
  5. 5.Joint Institute for Nuclear ResearchDubnaRussia

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