Kozmolojik sınırlamalar altında skaler fermiyonların bozunumu

Kompleks parametreli Minimal Süpersimetrik Standart Modelde üçüncü aile skaler fermiyonların (sfermiyonlar) nötralino içeren iki-cisim bozunum süreçleri sayısal olarak incelendi. Sfermiyonların bozunum kanalları için kısmi bozunum genişliği hesap edilip CP-faz bağımlılığı çizdirildi. Bu analiz yapılırken özellikle Wilkinson Microwave Anisotropy Probe (WMAP)’dan elde edilen verilerin modelin parametreleri üzerine getirdiği kozmolojik sınırlamalar göz önünde bulunduruldu. Ve ilk iki gaugino kütle parametresi (M1 ve M2) arasındaki evrensellik şartının yumuşatıldığı yani M1 ve M2’nin iki ayrı bağımsız parametre olarak davrandığı durum dikkate alındı

The numerical investigation of the two-body decays ,those include neutralino, of third family scalar fermions (sfermions) in the Minimal Supersymmetric Standard Model (MSSM) with complex parameters is presented. The partial decay widths for the decay channels of sfermions are calculated and their CP-phase dependences are plotted. In the analysis, the cosmological bounds imposed by Wilkinson Microwave Anisotropy Probe (WMAP) are particularly taken into account. We relax the universality condition among the first two gaugino mass parameters, M1 and M2, and treat M1 and M2 as two independent parameters

Keywords:

Minimal Supersymmetric Standard Model (MSSM), CP-violation, phase, scalar lepton, scalar quark Wilkinson Microwave Anisotropy Probe (WMAP),

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