0.4 03 0.0 0.0 0.5 10 1.5 20 Figure 4:The chargino couplings as a function of A.The dashed,blue line is for the wino- like chargino and the red,dotted line for the Higgsino-like chargino.Note,to show only the dependence on A,we kept the involved rotation matrices in the vertex constant for all values of A.The Higgs and chargino mixing matrices have been calculated using the input values tan B=1.3,A=0.8,K=0.9,AA=23 GeV,KA =-400 GeV,Us =265 GeV,M2=2 TeV, and all non-NMSSM parameters have been set to zero.This leads to(0.61,0.72,0.32). The unitary matrices which diagonalise the chargino mass matrix can be expressed by two rotation matrices with the angles and For the interaction of the light chargino we can write explicitly 吃= V292os业sim$2+i血业cosΦZg)+Asin亚sinΦz约. (10) The first observation is that unlike in the case of the charged Higgs,the couplings to the neutral doublet Higgs components are MSSM like and additional terms appear only due to mixing with the singlet state.To get more insight in this expression we can take the limit tan B→1 for whichΦ~亚，leading to 9安对A=-526os业si(2+Z约)）+入si2业Z） (11) There are two limits of interest: The light chargino is mostly wino-like (->0):the coupling to the Higgs is very suppressed. ·The light chargino is a Higgsino:(亚→π/2)：the first term vanishes and depending and the sign of A and the second term can contribute positively or negatively. 60.0 0.5 1.0 1.5 2.0 0.0 0.1 0.2 0.3 0.4 λ g˜χ − i ˜χ + i h/i Figure 4: The chargino couplings as a function of λ. The dashed, blue line is for the wino￾like chargino and the red, dotted line for the Higgsino-like chargino. Note, to show only the dependence on λ, we kept the involved rotation matrices in the vertex constant for all values of λ. The Higgs and chargino mixing matrices have been calculated using the input values tan β = 1.3, λ = 0.8, κ = 0.9, λAλ = 23 GeV, κAκ = −400 GeV, vs = 265 GeV, M2 = 2 TeV, and all non-NMSSM parameters have been set to zero. This leads to Z h ' (0.61, 0.72, 0.32). The unitary matrices which diagonalise the chargino mass matrix can be expressed by two rotation matrices with the angles Ψ and Φ. For the interaction of the light chargino we can write explicitly g L χ˜ − i χ˜ + j h = − i √ 2 n g2(cos Ψ sin ΦZ h 1 + sin Ψ cos ΦZ h 2 ) + λ sin Ψ sin ΦZ h 3 o . (10) The first observation is that unlike in the case of the charged Higgs, the couplings to the neutral doublet Higgs components are MSSM like and additional terms appear only due to mixing with the singlet state. To get more insight in this expression we can take the limit tan β → 1 for which Φ ∼ Ψ, leading to g L χ˜ − i χ˜ + j h = − i √ 2 ￾ g2 cos Ψ sin Ψ(Z h 1 + Z h 2 ) + λ sin2 ΨZ h 3
. (11) There are two limits of interest: • The light chargino is mostly wino-like (Ψ → 0): the coupling to the Higgs is very suppressed. • The light chargino is a Higgsino: (Ψ → π/2): the first term vanishes and depending and the sign of λ and Z h 3 the second term can contribute positively or negatively. 6