### Abstract

We use fragmenting jet functions (FJFs) in the context of quarkonia to study the production channels predicted by NRQCD (^{3}S_{1} ^{(1)}, ^{3}S_{1} ^{(8)}, ^{1}S_{0} ^{(8)}, ^{3}P_{J} ^{(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 ^{1}S_{0} ^{(8)} matrix element dominates, then the gluon FJF will diminish with increasing energy for fixed momentum fraction, z, and z >0.5.

Original language | English (US) |
---|---|

Article number | 3 |

Journal | Journal of High Energy Physics |

Volume | 2014 |

Issue number | 11 |

DOIs | |

State | Published - Jan 1 2014 |

Externally published | Yes |

### Fingerprint

### Keywords

- Jets
- QCD Phenomenology

### ASJC Scopus subject areas

- Nuclear and High Energy Physics

### Cite this

*Journal of High Energy Physics*,

*2014*(11), [3]. https://doi.org/10.1007/JHEP11(2014)003

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

Research output: Contribution to journal › Article

*Journal of High Energy Physics*, vol. 2014, no. 11, 3. https://doi.org/10.1007/JHEP11(2014)003

}

TY - JOUR

T1 - Probing quarkonium production mechanisms with jet substructure

AU - Baumgart, Matthew

AU - Leibovich, Adam K.

AU - Mehen, Thomas

AU - Rothstein, Ira Z.

PY - 2014/1/1

Y1 - 2014/1/1

N2 - 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.

AB - 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.

KW - Jets

KW - QCD Phenomenology

UR - http://www.scopus.com/inward/record.url?scp=84919897654&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84919897654&partnerID=8YFLogxK

U2 - 10.1007/JHEP11(2014)003

DO - 10.1007/JHEP11(2014)003

M3 - Article

AN - SCOPUS:84919897654

VL - 2014

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1029-8479

IS - 11

M1 - 3

ER -