Probing jet splitting and energy loss via groomed jets in relativistic heavy-ion collisions

doi:https://doi.org/10.1016/j.nuclphysa.2018.09.013

Title: Probing jet splitting and energy loss via groomed jets in relativistic heavy-ion collisions

Full Record
Other Related Research

Abstract

The nuclear modification of groomed jet splitting in relativistic heavy-ion collisions at RHIC and the LHC is studied based on higher twist jet energy loss formalism. Assuming coherent energy loss for two subjets, we find a non-monotonic dependence on jet energy for the nuclear modification of jet splitting function, which provides a good description of CMS and STAR groomed jet measurements. In contrast, the assumption of independent energy loss for two subjets cannot explain the observed nuclear modification pattern for groomed jet splitting.

Authors:

Chang, Ning-Bo ^[1]; Cao, Shanshan ^[2];

^[3]

Central China Normal Univ., Wuhan (China); Xinyang Normal Univ. (China)
Wayne State Univ., Detroit, MI (United States)
Central China Normal Univ., Wuhan (China)

Publication Date:: 2019-01-22

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

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 1611982

Grant/Contract Number:: SC0013460

Resource Type:: Journal Article: Accepted Manuscript

Journal Name:: Nuclear Physics. A

Additional Journal Information:: Journal Volume: 982; Journal Issue: C; Journal ID: ISSN 0375-9474

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Physics; Jet quenching; jet energy loss; parton splitting function; jet grooming; medium-induced emission; subjet

Citation Formats


                    Chang, Ning-Bo, Cao, Shanshan, and Qin, Guang-You. Probing jet splitting and energy loss via groomed jets in relativistic heavy-ion collisions.  United States: N. p., 2019. 
        Web.  doi:10.1016/j.nuclphysa.2018.09.013.

Copy to clipboard


                    Chang, Ning-Bo, Cao, Shanshan, & Qin, Guang-You. Probing jet splitting and energy loss via groomed jets in relativistic heavy-ion collisions.  United States.  https://doi.org/10.1016/j.nuclphysa.2018.09.013

Copy to clipboard


                    Chang, Ning-Bo, Cao, Shanshan, and Qin, Guang-You. Tue .  
        "Probing jet splitting and energy loss via groomed jets in relativistic heavy-ion collisions".  United States.  https://doi.org/10.1016/j.nuclphysa.2018.09.013.  https://www.osti.gov/servlets/purl/1611982.

Copy to clipboard


                    
@article{osti_1611982,

  title        = {Probing jet splitting and energy loss via groomed jets in relativistic heavy-ion collisions},

  author       = {Chang, Ning-Bo and Cao, Shanshan and Qin, Guang-You},

  abstractNote = {The nuclear modification of groomed jet splitting in relativistic heavy-ion collisions at RHIC and the LHC is studied based on higher twist jet energy loss formalism. Assuming coherent energy loss for two subjets, we find a non-monotonic dependence on jet energy for the nuclear modification of jet splitting function, which provides a good description of CMS and STAR groomed jet measurements. In contrast, the assumption of independent energy loss for two subjets cannot explain the observed nuclear modification pattern for groomed jet splitting.},

  doi          = {10.1016/j.nuclphysa.2018.09.013},

  url          = {https://www.osti.gov/biblio/1611982},
  journal      = {Nuclear Physics. A},

  issn         = {0375-9474},

  number       = C,

  volume       = 982,

  place        = {United States},

  year         = {2019},

  month        = {1}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Accepted Manuscript (DOE)

Publisher's Version of Record

https://doi.org/10.1016/j.nuclphysa.2018.09.013

Other availability

Search WorldCat to find libraries that may hold this journal

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

Probing medium-induced jet splitting and energy loss in heavy-ion collisions

Journal Article Chang, Ning-Bo ; Cao, Shanshan ; Qin, Guang-You - Physics Letters B

Tmore »« less
Cited by 1
https://doi.org/10.1016/j.physletb.2018.04.019
Groomed jets in heavy-ion collisions: sensitivity to medium-induced bremsstrahlung

Journal Article Mehtar-Tani, Yacine ; Tywoniuk, Konrad - Journal of High Energy Physics (Online)

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, thatmore »« less
Cited by 2
https://doi.org/10.1007/JHEP04(2017)125

Full Text Available
Measurement of the groomed jet mass in PbPb and pp collisions at $$ \sqrt{s_{\mathrm{NN}}}=5.02 $$ TeV

Journal Article Sirunyan, A. M. ; Tumasyan, A. ; Adam, W. ; ... - Journal of High Energy Physics (Online)

Here, a measurement of the groomed jet mass in PbPb and pp collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV with the CMS detector at the LHC is presented. Jet grooming is a recursive procedure which sequentially removes soft constituents of a jet until a pair of hard subjets is found. The resulting groomed jets can be used to study modifications to the parton shower evolution in the presence of the hot and dense medium created in heavy ion collisions. Predictions of groomed jet properties from the PYTHIA and HERWIG++ event generators agree with the measurements in pp collisions.more »« less
Cited by 2
https://doi.org/10.1007/JHEP10(2018)161

Full Text Available
Jet splitting function in the vacuum and QCD medium

Journal Article Li, Hai Tao ; Vitev, Ivan Mateev - PoS Proceedings of Science

The two-prong structure related to the leading subjets inside a reconstructed jet opens new avenues toward precision constraints on the in-medium modification of parton showers. In this talk, we present the first resummed calculation of the soft-dropped groomed momentum sharing distribution, or the jet splitting function, in heavy-ion collisions for both light jets and heavy flavor tagged jets. Existing light jet splitting function data from the STAR experiment at RHIC and the CMS experiment at LHC can be understood in the unified framework of soft-collinear effective theory with Glauber gluon interactions. For heavy flavor jets, very interestingly, the momentum sharingmore »« less
https://doi.org/10.22323/1.345.0077

Full Text Available
Medium-induced parton energy loss in {gamma}+jet events of high-energy heavy-ion collisions

Journal Article Wang, X ; Huang, Z - Physical Review, C

The effect of medium-induced parton energy loss on jet fragmentation is studied in high-energy heavy-ion collisions. It is shown that an effective jet fragmentation function can be extracted from the inclusive p{sub T} spectrum of charged particles in the opposite direction of a tagged direct photon with a fixed transverse energy. We study the modification of the effective jet fragmentation function due to parton energy loss in AA as compared to pp collisions, including E{sub T} smearing from initial-state radiations for the photon-tagged jets. The effective fragmentation function at z=p{sub T}/E{sub T}{sup {gamma}}{approximately}1 in pA collisions is shown to bemore »« less
https://doi.org/10.1103/PhysRevC.55.3047

Similar Records