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

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

2009-06-22

arxiv.org/abs/0906.3805v1

Phys.Part.Nucl.Lett.6:181-189,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 8 figures, Presented at XIX-th International Baldin Seminar on High Energy Physics Problems, XIX-th ISHEPP (JINR, Du

Scientific paper

10.1134/S1547477109030017

We study pair production of scalar top quarks in e+e- collisions with the subsequent decay of the top squarks into b-quarks and charginos. We simulate this process by using PYTHIA6.4 for the beam energy 2Ebeam = 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 integrared luminosity of 1000 1/fb provided that the neutralino mass is known.

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