Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1996-01-30
Phys.Rev.Lett. 76 (1996) 3494-3497
Physics
High Energy Physics
High Energy Physics - Phenomenology
11 pages, requires phyzzx, published version
Scientific paper
10.1103/PhysRevLett.76.3494
The experimental signatures for gauge mediated supersymmetry breaking are presented. The phenomenology associated with this class of models is distinctive since the gravitino is naturally the LSP. The next lightest supersymmetric particle (NLSP) can be a gaugino, Higgsino, or right handed slepton. Decay of the NLSP to its partner plus the LSP proceeds through the Goldstino component of the gravitino. For a significant range of parameters this decay can take place within the detector, and can be measured as a displaced vertex or kink in a charged particle track. In the case that the NLSP is mostly gaugino, we identify the discovery modes as $e^+e^- \rightarrow \gamma \gamma + \Emiss$, and $p \bar{p} \rightarrow l^+ l^- \gamma \gamma + \EmissT$. If the NLSP is a right handed slepton the discovery modes are $e^+ e^- \rightarrow l^+ l^- + \Emiss$ and $p \bar{p} \rightarrow l^+ l^- + \EmissT$. An NLSP which is mostly Higgsino is also considered. Finally, these theories can contain scalar particles which mediate sub-millimeter range coherent forces of gravitational strength.
Dimopoulos Savas
Dine Michael
Raby Stuart
Thomas Scott
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