Semi-inclusive jet functions and jet substructure in JET(I) and JET(II) algorithms

Subleading Jet Functions in Inclusive B Decays

The contribution of subleading jet functions to inclusive decay distributions of B mesons are derived from a systematic two-step matching of QCD current correlators onto soft collinear and heavy quark effective theory. Focusing on the tree level matching of QCD onto soft collinear effective theory, the subleading jet functions are defined to all orders in αs(μi) (with μ 2 i ∼ mbΛQCD) and are ca...

Jet observables without jet algorithms

We introduce a new class of event shapes to characterize the jet-like structure of an event. Like traditional event shapes, our observables are infrared/collinear safe and involve a sum over all hadrons in an event, but like a jet clustering algorithm, they incorporate a jet radius parameter and a transverse momentum cut. Three of the ubiquitous jet-based observables — jet multiplicity, summed ...

Inclusive Jet Production at CDF

We present results on inclusive jet production in proton-antiproton collisions at √ s = 1.96 TeV. The measurements are based on 1.0 fb−1 of CDF Run II data and were carried out for jets in five different jet rapidity regions up to | Y |=2.1. Both the midpoint cone based algorithm and kT algorithm were investigated to reconstruct the jets. The results are compared to next-to-leading order pertur...

Inclusive Jet Production at CDF

Inclusive Jet ET Distributions and Light Gluinos.

In the light gluino variant of the minimal supersymmetric model gluino pairs can be readily produced in collider experiments even if the squarks are arbitrarily heavy. This enhances the jet transverse energy distributions. In addition the slower running of the strong coupling constant in the presence of light gluinos leads to a further enhancement at higher transverse energies relative to the s...