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Titolo: Reconstructing the chargino system at e(+)e(-) linear colliders
Autore: Choi, SY; Djouadi, A; Guchait, M; Kalinowski, J; Song, HS; Zerwas, PM;
- Indirizzi:
- Korea Inst Adv Study, Seoul 130012, South Korea Korea Inst Adv Study Seoul South Korea 130012 Seoul 130012, South Korea Univ Montpellier 2, F-34095 Montpellier, France Univ Montpellier 2 Montpellier France F-34095 -34095 Montpellier, France DESY, D-22603 Hamburg, Germany DESY Hamburg Germany D-22603DESY, D-22603 Hamburg, Germany Univ Warsaw, Inst Theor Phys, PL-00681 Warsaw, Poland Univ Warsaw WarsawPoland PL-00681 t Theor Phys, PL-00681 Warsaw, Poland Seoul Natl Univ, Ctr Phys Theor, Seoul 151742, South Korea Seoul Natl Univ Seoul South Korea 151742 heor, Seoul 151742, South Korea Seoul Natl Univ, Dept Phys, Seoul 151742, South Korea Seoul Natl Univ Seoul South Korea 151742 Phys, Seoul 151742, South Korea
- Titolo Testata:
- EUROPEAN PHYSICAL JOURNAL C
fascicolo: 3,
volume: 14,
anno: 2000,
pagine: 535 - 546
- SICI:
- 1434-6044(200006)14:3<535:RTCSAE>2.0.ZU;2-P
- Fonte:
- ISI
- Lingua:
- ENG
- Soggetto:
- NEUTRALINO PRODUCTION; POLARIZED BEAMS; PAIR-PRODUCTION; STANDARD MODEL; SUPERSYMMETRY; COLLISIONS; DECAY; SUPERGRAVITY; SEARCH; ANNIHILATION;
- Tipo documento:
- Article
- Natura:
- Periodico
- Settore Disciplinare:
- Physical, Chemical & Earth Sciences
- Citazioni:
- 34
- Recensione:
- Indirizzi per estratti:
- Indirizzo: Choi, SY Korea Inst Adv Study, Seoul 130012, South Korea Korea Inst Adv Study Seoul South Korea 130012 0012, South Korea
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- Citazione:
- S.Y. Choi et al., "Reconstructing the chargino system at e(+)e(-) linear colliders", EUR PHY J C, 14(3), 2000, pp. 535-546
Abstract
In most supersymmetric theories charginos, <(chi)over tilde>(+/-)(1,2), belong to the class of the lightest supersymmetric particles. The chargino system can be reconstructed completely in e(+)e(-) collider experiments: e(+)e(-) --> <(chi)over tilde>(+)(i)<(chi)over tilde>(-)(j) [i, j = 1, 2]. By measuring the total cross sections and the asymmetries with polarized beams,the chargino masses and the gaugino-higgsino mixing angles of these statescan be determined accurately If only the lightest charginos <(chi)over tilde>(+/-)(1) are kinematically accessible in a first phase of the machine, transverse beam polarization or the measurement of chargino polarization in the final state is needed to determine the mixing angles. From these observables the fundamental SUSY parameters can be derived: the SU(2) gaugino mass M-2 the modulus and the cosine of the CP-violating phase of the higgsino mass parameter mu, and tan beta = v(2)/v(1), the ratio of the vacuum expectation Values of the two neutral Higgs doublet fields. The remaining two-fold ambiguity of the phase can be resolved by measuring the normal polarization of the charginos. Sum rules of the cross sections can be exploited to investigate the closure of the two-chargino system.
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Documento generato il 19/06/13 alle ore 18:59:19