MRI-PHY-971217 Probing Hg contact interactions by gg → H at a high energy hadron collider

Abstarct In this article we study the effect of Hg contact interactions on H production by gluon fusion at a hadron collider. Two such d=6 operators have been considered. The present precision for measuring αs implies that the lower bound on the scale for the CP even operator O1 must be around 2 TeV. Whereas the precision for measuring dn gives rise to a lower bound of about 10 TeV on the scale for the CP odd operator O2. We show that for the above lower bound O1 can significantly affect the parton level cross-section for the process gg → H.