Research ArticleOpen AccessGoogle Scholar indexed
Rare Top Decay <i>t</i> →<i>cγ</i> in General THDM-III
Departamento de Física, FES-Cuautitlan, UNAM, Estado de México, México
Departamento de Física, FES-Cuautitlan, UNAM, Estado de México, México
Departamento de Física, Universidad Nacional de Colombia, Bogotá D.C., Colombia
- 1 Departamento de Física, FES-Cuautitlan, UNAM, Estado de México, México
- 2 Departamento de Física, FES-Cuautitlan, UNAM, Estado de México, México
- 3 Departamento de Física, Universidad Nacional de Colombia, Bogotá D.C., Colombia
Journal of Quantum Information Science·Volume 07 (2017)·Pages 57–66·Published 28 April 2017·DOI10.4236/jqis.2017.72006
Copy link · social · email
Abstract
We study the decay t → cγ with flavor-changing neutral interactions in scalar sector of the type III Two Higgs Doublet Model (THDM-III) with mixing between neutral scalar fields as a result of considering the most general scalar potential. The branching ratio of the decay Br ( t → cγ ) is calculated as function of the mixing parameters and masses of the neutral scalar fields. We obtain a Br ( t → cγ ) of the order of 10 − 8 for the considered regions of the mixing parameters. Finally, one upper bound for the possible events is estimated to be n=18 by assuming an expected luminosity of the order of 300 fb − 1 .
KeywordsTwo Higgs Doublet ModelsRare Top Decays
- Eilam, G., Hewett, J.L. and Soni, A. (1991) Rare Decays of the Top Quark in the Standard and Two-Higgs-Doublet Models. Physical Review D, 44, 1473. https://doi.org/10.1103/PhysRevD.44.1473
- Glashow, S.L., Iliopoulos, J. and Maiani, L. (1970) Weak Interactions with Lepton-Hadron Symmetry. Physical Review D, 2, 875. https://doi.org/10.1103/PhysRevD.2.1285
- Beneke, M., et al. (2000) Top quark physics. arXiv:hep-ph/0407319
- ATLAS Collaboration (2012) Observation of a New Particle in the Search for the Standard Model Higgs. Boson with the ATLAS Detector at the LHC. Physics Letters B, 716, 1.
- CMS Collaboration (2012) Observation of a New Boson at a Mass of 125 GeV with the CMS Experiment at the LHC. Physics Letters B, 716, 30.
- Diaz, R. (2002) Phenomenological Analysis of the Two Higgs Doublet Model. Ph.D. Thesis. arXiv:hep-ph/0212237v2.
- Haber, H.E., Kane, G.L. and Sterling, T. (1979) The Fermion Mass Scale and Possible Effects of Higgs Bosons on Experimental Observables. Nuclear Physics B, 161, 493.
- Hall, L.J. and Wise, M.B. (1981) Flavor Changing Higgs-Boson Couplings. Nuclear Physics B, 187, 397.
- Donoghue, J.F. and Li, L.F. (1979) Properties of Charged Higgs Bosons. Physical Review D, 19, 945. https://doi.org/10.1103/PhysRevD.19.945
- Cheng, T.P. and Sher, M. (1987) Mass-Matrix Ansatz and Flavor Nonconservation in Models with Multiple Higgs Doublets. Physical Review D, 35, 3484. https://doi.org/10.1103/PhysRevD.35.3484
- Crivellin, A., Kokulu, A. and Greub, C. (2013) Flavor-Phenomenology of Two-Higgs-Doublet Models with Generic Yukawa Structure. Physical Review D, 87, Article ID: 094031. hep-ph/1303.5877
- Branco, G.C., Ferreira, P.M., Lavoura, L., Rebelo, M.N., Sher, M. and Silva, J.P. (2012) Theory and Phenomenology of Two-Higgs-Doublet Models. Physics Reports, 516, 1. hep-ph/1106.0034
- Dolle, E.M. and Su, S. (2009) Inert Dark Matter. Physical Review D, 80, Article ID: 055012. hep-ph/0906.1609 https://doi.org/10.1103/PhysRevD.80.055012
- Cirelli, M., Fornengo, N. and Strumia, A. (2006) Minimal Dark Matter. Nuclear Physics B, 753, 178. hep-ph/0512090
- Ginzburg, I.F. and Krawczyk, M. (2005) Symmetries of Two Higgs Doublet Model and CP Violation. Physical Review D, 72, Article ID: 115013. hep-ph/0408011