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Title: Groomed jets in heavy-ion collisions: sensitivity to medium-induced bremsstrahlung

Journal Article · · Journal of High Energy Physics (Online)
 [1]; ORCiD logo [2]
  1. Univ. of Washington, Seattle, WA (United States). Inst. of Nuclear Theory
  2. European Organization for Nuclear Research (CERN), Geneva (Switzerland). Dept. of Theoretical Physics

Here, we argue that contemporary jet substructure techniques might facilitate a more direct measurement of hard medium-induced gluon bremsstrahlung in heavy-ion collisions, and focus specifically on the “soft drop declustering” procedure that singles out the two leading jet substructures. Assuming coherent jet energy loss, we find an enhancement of the distribution of the energy fractions shared by the two substructures at small subjet energy caused by hard medium-induced gluon radiation. Departures from this approximation are discussed, in particular, the effects of colour decoherence and the contamination of the grooming procedure by soft background. Finally, we propose a complementary observable, that is the ratio of the two-pronged probability in Pb-Pb to proton-proton collisions and discuss its sensitivity to various energy loss mechanisms.

Research Organization:
Univ. of Washington, Seattle, WA (United States)
Sponsoring Organization:
USDOE; European Commission (EC)
Grant/Contract Number:
FG02-00ER41132; 655279
OSTI ID:
1368380
Journal Information:
Journal of High Energy Physics (Online), Vol. 2017, Issue 4; ISSN 1029-8479
Publisher:
Springer BerlinCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 45 works
Citation information provided by
Web of Science

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Cited By (5)

Study of jet-medium interactions using jet shape observables in heavy ion collisions at LHC energies with JEWEL journal August 2019
Nuclear modification of leading hadrons and jets within a virtuality ordered parton shower journal February 2020
Measurement of the Splitting Function in pp and Pb-Pb Collisions at √sNN=5.02  TeV text January 2018
Jet Substructure Studies with CMS Open Data text January 2017
Nuclear modification of leading hadrons and jets within a virtuality ordered parton shower text January 2017

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