Closing the Window on Light Charged Higgs Bosons in the NMSSM

Table 1

Reduced Higgs couplings in the NMSSM compared to the MSSM and the SM (when applicable). Note that the reduced couplings to fermions are identical for all three generations, even if only the third generation is displayed here. The couplings to ℎ₃ can be obtained from the ℎ₁ ones by the replacements 𝐒₁₁→𝐒₃₁ and 𝐒₁₂→𝐒₃₂ whereas the couplings to 𝑎₂ can be obtained from the 𝑎₁ ones by the replacement cos𝜃_𝐴→sin𝜃_𝐴.

Vertex	NMSSM	MSSM	SM
ℎ1𝑡𝑡	𝐒11/sin𝛽	cos𝛼/sin𝛽	1
ℎ1𝑏𝑏	𝐒12/cos𝛽	sin𝛼/cos𝛽	1
ℎ2𝑡𝑡	𝐒21/sin𝛽	sin𝛼/sin𝛽	n.a.
ℎ2𝑏𝑏	𝐒22/cos𝛽	cos𝛼/cos𝛽	n.a.
𝑎1𝑡𝑡	cot𝛽cos𝜃𝐴	cot𝛽	n.a.
𝑎1𝑏𝑏	tan𝛽cos𝜃𝐴	tan𝛽	n.a.
ℎ1𝑉𝑉	sin𝛽𝐒11+cos𝛽𝐒12	sin(𝛽−𝛼)	1
ℎ2𝑉𝑉	sin𝛽𝐒21+cos𝛽𝐒22	cos(𝛽−𝛼)	n.a.
𝑎1ℎ1𝑍	(cos𝛽𝐒11−sin𝛽𝐒12)cos𝜃𝐴	cos(𝛽−𝛼)	n.a.
𝑎1ℎ2𝑍	(cos𝛽𝐒21−sin𝛽𝐒22)cos𝜃𝐴	sin(𝛽−𝛼)	n.a.
ℎ1ℎ^+𝑊^−	cos𝛽𝐒11−sin𝛽𝐒12	cos(𝛽−𝛼)	n.a.
𝑎1ℎ^+𝑊^−	cos𝜃𝐴	1	n.a.