Effects of SO(10) D terms on SUSY signals at the Fermilab Tevatron - art. no. 055003

We study signals for the production of superparticles at the Fermilab Tevat ron in supergravity scenarios based on the grand unified group SO(10). The breaking of this group introduces extra contributions to the masses of all scalars, described by a single new parameter. We find that varying this par ameter can considerably change the size of various expected signals studied in the literature, with different numbers of jets and/or charged leptons i n the final state. The ratios of these signals can thus serve as a diagnost ic to detect or constrain deviations from the much-studied scenario where a ll scalar masses are universal at the GUT scale. Moreover, under favorable circumstances some of these signals, and/or new signals involving hard b je ts, should be observable at the next run of the Fermilab Tevatron collider even if the average scalar mass lies well above the gluino mass.