Higgs decay width in multiscalar doublet models

作     者：Sonny Mantry Michael Trott Mark B. Wise 

作者机构：California Institute of Technology Pasadena California 91125 USA Department of Physics University of California at San Diego La Jolla California 92093 USA 

出 版 物：《Physical Review D》 (Phys Rev D Part Fields Gravit Cosmol)

年 卷 期：2008年第77卷第1期

页      面：013006-013006页

核心收录：

学科分类：07[理学] 0827[工学-核科学与技术] 0704[理学-天文学] 0702[理学-物理学] 

摘      要：We show that there are regions of parameter space in multiscalar doublet models where, in the first few hundred inverse femtobarns of data, the new charged and neutral scalars are not directly observable at the LHC and yet the Higgs decay rate to bb¯ is changed significantly from its standard model value. For a light Higgs with a mass less than 140 GeV, this can cause a large change in the number of two photon and τ+τ− Higgs decay events expected at the LHC compared to the minimal standard model. In the models we consider, the principle of minimal flavor violation is used to suppress flavor changing neutral currents. This paper emphasizes the importance of measuring the properties of the Higgs boson at the LHC; for a range of parameters the model considered has new physics at the TeV scale that is invisible, in the first few hundred inverse femtobarns of integrated luminosity at the LHC, except indirectly through the measurement of Higgs boson properties.