Effects of invisible particle emission on global inclusive variables at hadron colliders

Understand

We examine the effects of invisible particle emission in conjunction with QCD initial state radiation (ISR) on quantities designed to probe the mass scale of new physics at hadron colliders, which involve longitudinal as well as transverse final-state momenta.

• This is an extension of our previous treatment, arXiv:0903.2013, of the effects of ISR on global inclusive variables.
• We present resummed results on the visible invariant mass distribution and compare them to parton-level Monte Carlo results for top quark and gluino pair-production at the LHC.
• There is good agreement as long as the visible pseudorapidity interval is large enough (eta ~ 3).