On the Topic of Jets

Jesse Thaler (MIT)
Event Type: 
Room U2 5017 (Physics Dept., Bicocca U.)

When quarks and gluons are produced in high-energy collisions, their fragmentation and hadronization via QCD results in collimated sprays of particles called jets.
While quark and gluon partons carry color charge, jets are composed of color-singlet hadrons, so there is no unambiguous definition of "quark" and "gluon" at the hadron level.
Remarkably, a similar kind of problem is faced when analyzing the distribution of words in a set of documents, and there is a framework called "topic modeling" to identify
emergent themes in a corpus without having to specify those themes a priori.
In this talk, I present preliminary studies applying topic modeling to jet physics, and I speculate on a possible application of jet topics to extract the strong coupling constant.

Contact address

Dipartimento di Fisica
Università degli Studi di Milano
Via Celoria, 16 I-20133 Milano (Italy)
Tel. +39 02 503 17279 - Fax. 17480


INFN Milano