Inverting the mass hierarchy of jet quenching effects with prompt b-jet substructure
Abstract
In these proceedings, we discuss the role of heavy quark mass on the formation of parton showers. Mass effects are not well understood when parton branching occurs in nuclear matter, such as the quark-gluon plasma. Recently, a theoretically consistent picture of open heavy flavor production in ultra relativistic nuclear collisions has begun to emerge based on effective theories of QCD, such as soft collinear effective theory with Glauber gluons. We show that implementation of in-medium splitting processes containing heavy quarks into next-to-leading order calculations of heavy flavor production leads to larger cross section suppression when compared to traditional energy loss phenomenology. To better constrain the important mass dependence of in-medium splitting functions, we propose a new measurement in relativistic heavy ion collisions, based on a two-prong structure inside a reconstructed heavy flavor jet. In the region of jet transverse momenta where parton mass effects are leading, we predict a unique reversal of the mass hierarchy of jet quenching effects in heavy ion relative to proton collisions. Here, we find that the momentum sharing distribution of prompt b-tagged jets is more strongly modified in comparison to the one for light jets. The work summarized here opens new directions of research onmore »
- Authors:
-
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Publication Date:
- Research Org.:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC). High Energy Physics (HEP) (SC-25)
- OSTI Identifier:
- 1481980
- Report Number(s):
- LA-UR-18-20402
Journal ID: ISSN 1742-6588
- Grant/Contract Number:
- AC52-06NA25396
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Physics. Conference Series
- Additional Journal Information:
- Journal Volume: 1070; Journal ID: ISSN 1742-6588
- Publisher:
- IOP Publishing
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Atomic and Nuclear Physics; Heavy-ion collisions, jet substructure, QCD
Citation Formats
Vitev, Ivan. Inverting the mass hierarchy of jet quenching effects with prompt b-jet substructure. United States: N. p., 2018.
Web. doi:10.1088/1742-6596/1070/1/012020.
Vitev, Ivan. Inverting the mass hierarchy of jet quenching effects with prompt b-jet substructure. United States. https://doi.org/10.1088/1742-6596/1070/1/012020
Vitev, Ivan. Wed .
"Inverting the mass hierarchy of jet quenching effects with prompt b-jet substructure". United States. https://doi.org/10.1088/1742-6596/1070/1/012020. https://www.osti.gov/servlets/purl/1481980.
@article{osti_1481980,
title = {Inverting the mass hierarchy of jet quenching effects with prompt b-jet substructure},
author = {Vitev, Ivan},
abstractNote = {In these proceedings, we discuss the role of heavy quark mass on the formation of parton showers. Mass effects are not well understood when parton branching occurs in nuclear matter, such as the quark-gluon plasma. Recently, a theoretically consistent picture of open heavy flavor production in ultra relativistic nuclear collisions has begun to emerge based on effective theories of QCD, such as soft collinear effective theory with Glauber gluons. We show that implementation of in-medium splitting processes containing heavy quarks into next-to-leading order calculations of heavy flavor production leads to larger cross section suppression when compared to traditional energy loss phenomenology. To better constrain the important mass dependence of in-medium splitting functions, we propose a new measurement in relativistic heavy ion collisions, based on a two-prong structure inside a reconstructed heavy flavor jet. In the region of jet transverse momenta where parton mass effects are leading, we predict a unique reversal of the mass hierarchy of jet quenching effects in heavy ion relative to proton collisions. Here, we find that the momentum sharing distribution of prompt b-tagged jets is more strongly modified in comparison to the one for light jets. The work summarized here opens new directions of research on the substructure of heavy flavor jets.},
doi = {10.1088/1742-6596/1070/1/012020},
journal = {Journal of Physics. Conference Series},
number = ,
volume = 1070,
place = {United States},
year = {Wed Aug 01 00:00:00 EDT 2018},
month = {Wed Aug 01 00:00:00 EDT 2018}
}
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Figure 1: Illustration of parton shower formation in the QGP produced in ultrarelativistic nuclear collisions.
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Works referenced in this record:
Heavy-quark colorimetry of QCD matter
journal, November 2001
- Dokshitzer, Yu. L.; Kharzeev, D. E.
- Physics Letters B, Vol. 519, Issue 3-4
Heavy-flavour and quarkonium production in the LHC era: from proton–proton to heavy-ion collisions
journal, February 2016
- Andronic, A.; Arleo, F.; Arnaldi, R.
- The European Physical Journal C, Vol. 76, Issue 3
Inclusive b-jet production in heavy ion collisions at the LHC
journal, October 2013
- Huang, Jinrui; Kang, Zhong-Bo; Vitev, Ivan
- Physics Letters B, Vol. 726, Issue 1-3
Charmed-meson fragmentation functions with finite-mass corrections
journal, August 2008
- Kneesch, T.; Kniehl, B. A.; Kramer, G.
- Nuclear Physics B, Vol. 799, Issue 1-2
Comment on quark masses in SCET
journal, July 2003
- Leibovich, Adam K.; Ligeti, Zoltan; Wise, Mark B.
- Physics Letters B, Vol. 564, Issue 3-4
Medium-induced parton splitting kernels from Soft Collinear Effective Theory with Glauber gluons
journal, January 2012
- Ovanesyan, Grigory; Vitev, Ivan
- Physics Letters B, Vol. 706, Issue 4-5
Angular distributions of higher order splitting functions in the vacuum and in dense QCD matter
journal, July 2013
- Fickinger, Michael; Ovanesyan, Grigory; Vitev, Ivan
- Journal of High Energy Physics, Vol. 2013, Issue 7
Jet Quenching Phenomenology from Soft-Collinear Effective Theory with Glauber Gluons
journal, March 2015
- Kang, Zhong-Bo; Lashof-Regas, Robin; Ovanesyan, Grigory
- Physical Review Letters, Vol. 114, Issue 9
Towards the understanding of jet shapes and cross sections in heavy ion collisions using soft-collinear effective theory
journal, May 2016
- Chien, Yang-Ting; Vitev, Ivan
- Journal of High Energy Physics, Vol. 2016, Issue 5
Inclusive production of small radius jets in heavy-ion collisions
journal, June 2017
- Kang, Zhong-Bo; Ringer, Felix; Vitev, Ivan
- Physics Letters B, Vol. 769
Effective field theory approach to open heavy flavor production in heavy-ion collisions
journal, March 2017
- Kang, Zhong-Bo; Ringer, Felix; Vitev, Ivan
- Journal of High Energy Physics, Vol. 2017, Issue 3
Exposing the QCD Splitting Function with CMS Open Data
journal, September 2017
- Larkoski, Andrew; Marzani, Simone; Thaler, Jesse
- Physical Review Letters, Vol. 119, Issue 13
Probing the Hardest Branching within Jets in Heavy-Ion Collisions
journal, September 2017
- Chien, Yang-Ting; Vitev, Ivan
- Physical Review Letters, Vol. 119, Issue 11
Measurement of the Shared Momentum Fraction z g using Jet Reconstruction in p+p and Au+Au Collisions with STAR
journal, August 2017
- Kauder, K.
- Nuclear and Particle Physics Proceedings, Vol. 289-290
Figures / Tables found in this record:
Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.