Identifying heavy-flavor jets using vectors of locally aggregated descriptors

Bielčíková, J.; Kunnawalkam Elayavalli, R.; Ponimatkin, G.; Putschke, J. H.; Sivic, J.

doi:10.1088/1748-0221/16/03/p03017

Title: Identifying heavy-flavor jets using vectors of locally aggregated descriptors

Journal Article · Mon Mar 01 00:00:00 EST 2021 · Journal of Instrumentation

DOI:https://doi.org/10.1088/1748-0221/16/03/p03017· OSTI ID:1850029

Bielčíková, J.; Kunnawalkam Elayavalli, R.; Ponimatkin, G.; Putschke, J. H.; Sivic, J.

Abstract Jets of collimated particles serve a multitude of purposes in high energy collisions. Recently, studies of jet interaction with the quark-gluon plasma (QGP) created in high energy heavy ion collisions are of growing interest, particularly towards understanding partonic energy loss in the QGP medium and its related modifications of the jet shower and fragmentation. Since the QGP is a colored medium, the extent of jet quenching and consequently, the transport properties of the medium are expected to be sensitive to fundamental properties of the jets such as the flavor of the parton that initiates the jet. Identifying the jet flavor enables an extraction of the mass dependence in jet-QGP interactions. We present a novel approach to tagging heavy-flavor jets at collider experiments utilizing the information contained within jet constituents via the model architecture. We show the performance of this model in proton-proton collisions at center of mass energy √(s) = 200 GeV as characterized by common metrics and showcase its ability to extract high purity heavy-flavor jet sample at various jet momenta and realistic production cross-sections including a brief discussion on the impact of out-of-time pile-up. Such studies open new opportunities for future high purity heavy-flavor measurements at jet energies accessible at current and future collider experiments.

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Research Organization:: Wayne State Univ., Detroit, MI (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

DOE Contract Number:: FG02-92ER40713

OSTI ID:: 1850029

Journal Information:: Journal of Instrumentation, Vol. 16, Issue 03; ISSN 1748-0221

Publisher:: Institute of Physics (IOP)

Country of Publication:: United States

Language:: English

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