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

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, whic...

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Bibliographic Details
Published inarXiv.org
Main Authors Bartl, A, Majerotto, W, Moenig, K, Skachkova, A N, Skachkov, N B
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 22.06.2009
Subjects
Collisions
Luminosity
Pair production
Physics - High Energy Physics - Phenomenology
Quarks
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Summary: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.
ISSN:2331-8422
DOI:10.48550/arxiv.0906.3805