Search for supersymmetry at $gamma p$ - colliders

Abstract

We discuss the possibility of searching supersymmetry at TeV scale $gamma p$ colliders proposed recently. Theoretical predictions are derived within the framework of minimal supersymmetric standard model (MSSM) with R-parity conservation. Productions of squarks, gluinos, charginos and neutralinos through the processes $gamma p rightarrow tilde{q}tilde{w}X, gamma p rightarrow tilde{q}tilde{g}X, gamma p rightarrow tilde{q}tilde{gamma}X (or tilde{q}tilde{z})$ and $gamma p rightarrow tilde{q}tilde{q}*$X are considered. Cross sections for different initial beam polarizations are calculated and it is shown that polarization asymmetries are sensitive to the particle masses. Discovery mass limits of the superpartners are tabulated for various $gamma p$ colliders at different center of mass energies. The results are compared with those for the existing and future $e^+e^-$, ep and pp colliders, and we conclude that the TeV scale $gamma p$ colliders will provide in principle convenient ways to search supersymmetry.