Probing quarkonium production mechanisms with jet substructure

Matthew Baumgart, Adam K. Leibovich, Thomas Mehen, Ira Z. Rothstein

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

We use fragmenting jet functions (FJFs) in the context of quarkonia to study the production channels predicted by NRQCD (3S1 (1), 3S1 (8), 1S0 (8), 3PJ (8)). We choose a set of FJFs that give the probability to find a quarkonium with a given momentum fraction inside a cone-algorithm jet with fixed cone size and energy. This observable gives several lever arms that allow one to distinguish different production channels. In particular, we show that at fixed momentum fraction the individual production mechanisms have distinct behaviors as a function of the the jet energy. As a consequence of this fact, we arrive at the robust prediction that if the depolarizing 1S0 (8) matrix element dominates, then the gluon FJF will diminish with increasing energy for fixed momentum fraction, z, and z >0.5.

Original languageEnglish (US)
Article number3
JournalJournal of High Energy Physics
Volume2014
Issue number11
DOIs
StatePublished - Jan 1 2014
Externally publishedYes

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substructures
momentum
cones
levers
energy
matrices
predictions

Keywords

  • Jets
  • QCD Phenomenology

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Probing quarkonium production mechanisms with jet substructure. / Baumgart, Matthew; Leibovich, Adam K.; Mehen, Thomas; Rothstein, Ira Z.

In: Journal of High Energy Physics, Vol. 2014, No. 11, 3, 01.01.2014.

Research output: Contribution to journalArticle

Baumgart, Matthew ; Leibovich, Adam K. ; Mehen, Thomas ; Rothstein, Ira Z. / Probing quarkonium production mechanisms with jet substructure. In: Journal of High Energy Physics. 2014 ; Vol. 2014, No. 11.
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