July 31, 2018 to August 6, 2018
Maynooth University
Europe/Dublin timezone

Tests of NRQCD with quarkonium production in jets at the LHC

Aug 5, 2018, 5:10 PM
Hall H (Arts Bldg.)

Hall H

Arts Bldg.

Invited talk C: Heavy quarks Heavy quarks


Dr Thomas Mehen (Duke University)


This talk will describe new tests of quarkonium production using quarkonia that are produced within jets. We study the distribution in the fraction z of a jet's longitudinal momentum carried by the quarkonium. The z distribution is sensitive to the underlying NRQCD production mechanism. Analytic calculations of the z distributions in SCET that incorporate Next-to-Leading-Log (NLL) resummation disagree with default PYTHIA predictions. We describe a modified simulation method which agrees well with NLL analytic calculations. This method is then successfully applied to recent LHCb measurements of J/ψ within jets. We discuss the implications of this measurement for extractions of NRQCD long-distance matrix elements. Finally, we discuss other observables involving quarkonium within jets which may be useful for discriminating between NRQCD production mechanisms.

Primary author

Dr Thomas Mehen (Duke University)


Presentation materials