Neutralino Mass Bounds in the Next-To-Minimal Supersymmetric Standard Model

Abstract

We analyze the experimental data from the search for new particles at LEP 100 and obtain mass bounds for the neutralinos of the Next--To--Minimal Supersymmetric Standard Model (NMSSM). We find that for $\tan \beta \text{gsim}5.5$ a massless neutralino is still possible, while the lower mass bound for the second lightest neutralino corresponds approximately to that for the lightest neutralino in the Minimal Supersymmetric Standard Model (MSSM).

Comments: 9 pages LATEX, 4 figures available upon request to fabian@physik.uni-wuerzburg.de, UWITP-94/2, UWThPh-1994-17