Higher twist contributions to R-hadron phenomenology in the light gluino scenario

Abstract

The open light gluino window allows non-trivial higher twist gluino contributions to the proton wave function. Using a two-component model originally developed for charm hadroproduction, higher twist intrinsic gluino contributions to final state R-hadron formation are shown to enhance leading twist production in the forward x F region. We calculate R-hadron production at p lab = 800 GeV in pp, pBe, and pCu interactions with light gluino masses of 1.2, 1.5, 3.5, and 5.0 GeV.

Supersymmetry facing experiment: much ado (already) about nothing (yet)

“…The gluino obtains mass at one-loop from virtual quark-squark pairs and, within our present knowledge, can still be quite light. New light predicted hadrons [438] are mainly a gg bound state and its superpartner, a gluon-gluino bound state, discussed in section 9.4. The latter R 0 would be the lightest R-hadron, possibly long-lived or even stable.…”

Realistic gluino axion model consistent with supersymmetry breaking at the TeV scale

“…Even with m t = 174 GeV, M g is at most a few GeV. On the other hand, such a light gluino is not completely ruled out experimentally and may yet be discovered (see, for example, [14]). To obtain a heavy gluino (with mass greater than 250 GeV), some new physics at the TeV scale will be required.…”