Unitarity constraints for Yukawa couplings in the two-Higgs-doublet model type III

被引：4
作者：
Castillo, Andres [1 ]
Diaz, Rodolfo A. [1 ]
Morales, Jhon [1 ]
机构：
[1] Univ Nacl Colombia, Dept Fis, Bogota, Colombia
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS A | 2014年 / 29卷 / 18期
关键词：
Scattering amplitudes; beyond Standard Model; Higgs physics; HIGGS-BOSON; WEAK-INTERACTIONS; HIGH-ENERGIES; BOUNDS; MASSES; DECAYS;
D O I：
10.1142/S0217751X14500857
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
Unitarity constraints for Yukawa couplings are considered in the Two-Higgs-Doublet Model type III, by using a general expansion in partial waves for fermionic scattering processes. Constraints over general Flavor Changing Neutral Currents are found from that systematic, wherein such bounds compete with those coming from Lagrangian perturbativity requirement but are weaker than those imposed from phenomenological processes and precision tests. Nevertheless, for bounds based on unitarity, the number of assumptions is the lowest among phenomenological and theoretical limits. Indeed, these new theoretical constraints are independent of scalar masses or mixing angles for this extended Higgs sector, making them less model dependent.
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页数：22
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