Öz
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
Anahtar Kelimeler
Minimal Supersymmetric Standard Model (MSSM) CP-violation phase scalar lepton scalar quark Wilkinson Microwave Anisotropy Probe (WMAP)
Kaynakça
- (1) H. P. Nilles, ‘Supersymmetry, Supergravity And Particle Physics’, Phys. Rep. 110: 162, (1984). H. E. Haber and G. L. Kane, ‘The Search for Supersymmetry:
- Probing Physics Beyond the Standard Model’, Phys. Rep. 117: 75-263, (1985).
- (2) N. Cabibbo, ‘Unitary Symmetry and Leptonic Decays’, Phys. Rev. Lett. 10: 531- , (1963). M. Kobayashi and T. Maskawa, ‘High Energy Photo-Reactions and Generalized Vector Meson Dominance Model in Relativistically Extended Quark
- Model’, Prog. Theor. Phys. 49: 282-289, (1973).
- (3) M. Dugan, B. Grinstein and L. J. Hall, ‘CP Violation in the Minimal N=1 Supergravity Theory’, Nucl. Phys. B 255: 413-466, (1985). M. J. Duncan,
- ‘Generalized Cabibbo Angles in Supersymmetric Gauge Theories’, Nucl. Phys. B : 285-300, (1983).
- (4) A. Masiero and O. Vives, ‘Flavour and CP violation in supersymmetry’, New J. Phys. 4: 4-23, (2002).
- (5) A. Pilaftsis, ‘Higgs scalar-pseudoscalar mixing in the minimal supersymmetric standard model’, Phys.Lett.B 435: 88-100, (1998). D.A. Demir, ‘Probing the phases in the MSSM via e+ e- ---> h A’, Phys.Lett. B 465: 177-186, (1999).
- (6) D. N. Spergel, ‘First year Wilkinson Microwave Anisotropy Probe (WMAP) observations: Determination of cosmological parameters’, Astrophys. J. Suppl. : 175-225, (2003).
- (7) G. Belanger, F. Boudjema, S. Kraml, A. Pukhov and A. Semenov, ‘Relic density of neutralino dark matter in the MSSM with CP violation’, Phys. Rev. D 73: 115007, (2006).
- (8) A. Bartl, S. Hesselbach, K. Hidaka, T. Kernreiter and W. Porod, ‘Top squarks and bottom squarks in the MSSM with complex parameters’, Phys. Rev. D 70: 035003, (2004).
- (9) A. Bartl, K. Hidaka, T. Kernreiter and W. Porod, ‘τ sleptons and τ sneutrino in the MSSM with complex parameters’, Phys. Rev. D 66: 115009, (2002).
- (10) L. Selbuz and Z. Z. Aydin, ‘Top and Bottom squarks decays under cosmological bounds’, Phys. Lett. B 645: 228-234, (2007).
- (11) Z. Z. Aydin and L. Selbuz, ‘Squark decays in MSSM under the cosmological bounds’ J. Phys. G: Nucl. Part. Phys. 34: 2553-2565, (2007).
- (12) L. Selbuz and Z. Z. Aydin, ‘τsleptons and τsneutrino decays in MSSM under the cosmological bounds’, e-Print: arXiv:0808.2540, (2008).
- (13) J. R. Ellis, S. Ferrara and D. V. Nanopoulos, ‘CP Violation And Supersymmetry’, Phys. Lett. B 114: 231-240, (1982).
- (14) J. R. Ellis and S. Rudaz, ‘Search For Supersymmetry In Toponium Decays’, Phys. Lett. B 128: 248-262, (1983). J. F. Gunion, and H. E. Haber, ‘Higgs Bosons
- In Supersymmetric Models’, Nucl. Phys. B 272: 1-112, (1986).
Öz
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
Anahtar Kelimeler
Minimal Süpersimetrik Standart Model (MSSM) CP-bozulumu ϕU)1(1( CP-fazı skaler lepton skaler kuark Wilkinson Microwave Anisotropy Probe (WMAP)
Kaynakça
- (1) H. P. Nilles, ‘Supersymmetry, Supergravity And Particle Physics’, Phys. Rep. 110: 162, (1984). H. E. Haber and G. L. Kane, ‘The Search for Supersymmetry:
- Probing Physics Beyond the Standard Model’, Phys. Rep. 117: 75-263, (1985).
- (2) N. Cabibbo, ‘Unitary Symmetry and Leptonic Decays’, Phys. Rev. Lett. 10: 531- , (1963). M. Kobayashi and T. Maskawa, ‘High Energy Photo-Reactions and Generalized Vector Meson Dominance Model in Relativistically Extended Quark
- Model’, Prog. Theor. Phys. 49: 282-289, (1973).
- (3) M. Dugan, B. Grinstein and L. J. Hall, ‘CP Violation in the Minimal N=1 Supergravity Theory’, Nucl. Phys. B 255: 413-466, (1985). M. J. Duncan,
- ‘Generalized Cabibbo Angles in Supersymmetric Gauge Theories’, Nucl. Phys. B : 285-300, (1983).
- (4) A. Masiero and O. Vives, ‘Flavour and CP violation in supersymmetry’, New J. Phys. 4: 4-23, (2002).
- (5) A. Pilaftsis, ‘Higgs scalar-pseudoscalar mixing in the minimal supersymmetric standard model’, Phys.Lett.B 435: 88-100, (1998). D.A. Demir, ‘Probing the phases in the MSSM via e+ e- ---> h A’, Phys.Lett. B 465: 177-186, (1999).
- (6) D. N. Spergel, ‘First year Wilkinson Microwave Anisotropy Probe (WMAP) observations: Determination of cosmological parameters’, Astrophys. J. Suppl. : 175-225, (2003).
- (7) G. Belanger, F. Boudjema, S. Kraml, A. Pukhov and A. Semenov, ‘Relic density of neutralino dark matter in the MSSM with CP violation’, Phys. Rev. D 73: 115007, (2006).
- (8) A. Bartl, S. Hesselbach, K. Hidaka, T. Kernreiter and W. Porod, ‘Top squarks and bottom squarks in the MSSM with complex parameters’, Phys. Rev. D 70: 035003, (2004).
- (9) A. Bartl, K. Hidaka, T. Kernreiter and W. Porod, ‘τ sleptons and τ sneutrino in the MSSM with complex parameters’, Phys. Rev. D 66: 115009, (2002).
- (10) L. Selbuz and Z. Z. Aydin, ‘Top and Bottom squarks decays under cosmological bounds’, Phys. Lett. B 645: 228-234, (2007).
- (11) Z. Z. Aydin and L. Selbuz, ‘Squark decays in MSSM under the cosmological bounds’ J. Phys. G: Nucl. Part. Phys. 34: 2553-2565, (2007).
- (12) L. Selbuz and Z. Z. Aydin, ‘τsleptons and τsneutrino decays in MSSM under the cosmological bounds’, e-Print: arXiv:0808.2540, (2008).
- (13) J. R. Ellis, S. Ferrara and D. V. Nanopoulos, ‘CP Violation And Supersymmetry’, Phys. Lett. B 114: 231-240, (1982).
- (14) J. R. Ellis and S. Rudaz, ‘Search For Supersymmetry In Toponium Decays’, Phys. Lett. B 128: 248-262, (1983). J. F. Gunion, and H. E. Haber, ‘Higgs Bosons
- In Supersymmetric Models’, Nucl. Phys. B 272: 1-112, (1986).
Ayrıntılar
| Diğer ID | JA22DH48AE |
|---|---|
| Bölüm | Araştırma Makalesi |
| Yazarlar | |
| Yayımlanma Tarihi | 1 Aralık 2008 |
| Gönderilme Tarihi | 1 Aralık 2008 |
| Yayımlandığı Sayı | Yıl 2008 Cilt: 10 Sayı: 2 |