Chargino pair production in $e^+e^-$ collisions

S.Y. Choi; A. Djouadi; H. Dreiner; J. Kalinowski; P.M. Zerwas

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2024 Impact factor 4.8

Particles and Fields

Eur. Phys. J. C 7, 123-134
DOI 10.1007/s100529800957

Chargino pair production in e⁺e^- collisions

S.Y. Choi¹ - A. Djouadi² - H. Dreiner³ - J. Kalinowski⁴ - P.M. Zerwas⁵

¹ Department of Physics, Yonsei University, Seoul 120-749, Korea
² Phys. Math. et Théorique, Université Montpellier II, F-34095 Montpellier, France
³ Rutherford Laboratory, Chilton, Didcot OX11 OQX, UK
⁴ Inst. Theor. Physics, Warsaw University, PL-00681 Warsaw, Poland
⁵ DESY, Deutsches Elektronen-Synchrotron, D-22603 Hamburg, Germany

Received: 6 June 1998 / Published online: 15 October 1998

Abstract
Charginos $\chi_1^\pm$ are expected to be the lightest observable supersymmetric particles in many supersymmetric models. We present a procedure which will allow to determine the chargino mixing angles and, subsequently, the fundamental SUSY parameters $M_2, \mu$ and $\tan\beta$ by measurements of the total cross section and the spin correlations in e⁺e^- annihilation to $\chi_1^+ \chi_1^-$ chargino pairs.