- Jan Rak (Jyväskylä University)
Dr Felix Ringer (Los Alamos National Laboratory)
The jet fragmentation function describes the longitudinal momentum distribution of hadrons inside a reconstructed jet. We study the jet fragmentation function in proton-proton collisions in the framework of soft-collinear effective theory (SCET). We find that, up to power corrections, the jet fragmentation function can be expressed as the ratio of the fragmenting jet function and the...
Prof. Abhijit Majumder (Wayne State University)
We propose an extension to classify jet modification in heavy-ion collisions by including the jet mass along with its energy. The mass of a jet, as measured by jet reconstruction algorithms, is constrained by the jet's virtuality, which in turn has a considerable effect on such observables as the fragmentation function and jet shape observables. The leading parton, propagating through a dense...
Dr Yang-Ting Chien (Los Alamos National Laboratory)
Jet substructure modifications in heavy ion collisions contain useful information about the quark-gluon plasma. The precise understanding of jet substructures therefore becomes the key to extracting the medium properties. I will discuss the advantage of using effective field theory techniques to systematically perform precise jet substructure calculations. While jet shapes and jet...
Prof. Rainer Fries (Texas A and M University)
Within the JET collaboration we have explored hadronization of jet showers in the vacuum and in nuclear matter based on the idea of quark recombination. We find that partons in the low-z bulk of typical vacuum jet showers usually find recombination partners, while high-z partons are typically too far removed in phase space and need to stay connected to other partons via QCD strings. We model...