Exploration of jet substructure using iterative declustering in pp and Pb–Pb collisions at LHC energies - INSPIRE

DataBETA

Exploration of jet substructure using iterative declustering in pp and Pb–Pb collisions at LHC energies

ALICE

Collaboration

May 7, 2019

12 pages

Published in:

Phys.Lett.B 802 (2020) 135227

Published: Mar 10, 2020

e-Print:

1905.02512 [nucl-ex]

DOI:

10.1016/j.physletb.2020.135227 (publication)

Report number:

CERN-EP-2019-087

Experiments:

CERN-LHC-ALICE

View in:

reference search115 citations

Citations per year

Abstract: (Elsevier)

The ALICE collaboration at the CERN LHC reports novel measurements of jet substructure in pp collisions at

\sqrt{s}

= 7 TeV and central Pb-Pb collisions at

\sqrt{s_{\rm{NN}}}

= 2.76 TeV. Jet substructure of track-based jets is explored via iterative declustering and grooming techniques. We present the measurement of the momentum sharing of two-prong substructure exposed via grooming, the

z_{\rm{g}}

, and its dependence on the opening angle, in both pp and Pb-Pb collisions. We also present the first measurement of the distribution of the number of branches obtained in the iterative declustering of the jet, which is interpreted as the number of its hard splittings. In Pb-Pb collisions, we observe a suppression of symmetric splittings at large opening angles and an enhancement of splittings at small opening angles relative to pp collisions, with no significant modification of the number of splittings. The results are compared to predictions from various Monte Carlo event generators to test the role of important concepts in the evolution of the jet in the medium such as color coherence.

Note:

20 pages, 4 captioned figures, 3 tables, authors from page 15, published version, figures at http://alice-publications.web.cern.ch/node/5256

heavy ion: scattering
p p: scattering
color: coherence
CERN LHC Coll
Monte Carlo
enhancement
suppression
ALICE
PYTHIA
experimental results

References(55)

Figures(4)

[1]

Inclusive jet spectrum for small-radius jets

Mrinal Dasgupta
(
- Manchester U.
)
,
Frédéric A. Dreyer
(
- Paris U., VI-VII and
- Paris, LPTHE and
- CERN
)
,
Gavin P. Salam
(
- CERN
)
,
Gregory Soyez
(
- IPhT, Saclay
)

- JHEP 06 (2016) 057
•
e-Print:
- 1602.01110
•
DOI:
- 10.1007/JHEP06(2016)057

[2]

Jet Substructure at the Large Hadron Collider: Experimental Review

Roman Kogler
(
- Hamburg U.
)
,
Benjamin Nachman
(
- LBNL, Berkeley
)
,
Alexander Schmidt
(
- RWTH Aachen U.
)
,
Lily Asquith
(
- U. Sussex (main)
)
,
Mario Campanelli
(
- U. Coll. London
)

et al.

- Rev.Mod.Phys. 91 (2019) 4, 045003
•
e-Print:
- 1803.06991
•
DOI:
- 10.1103/RevModPhys.91.045003

[3]

Measurement of jet substructure observables in $\mathrm{t\overline{t}}$ events from proton-proton collisions at $\sqrt{s}=$ 13TeV

CMS

Collaboration

•

A. M. Sirunyan

et al.

- Phys.Rev.D 98 (2018) 9, 092014
•
e-Print:
- 1808.07340
•
DOI:
- 10.1103/PhysRevD.98.092014

[4]

Jet Substructure at the Large Hadron Collider: A Review of Recent Advances in Theory and Machine Learning

Andrew J. Larkoski
(
- Reed Coll.
)
,
Ian Moult
(
- UC, Berkeley and
- LBNL, Berkeley
)
,
Benjamin Nachman
(
- LBL, Berkeley
)

- Phys.Rept. 841 (2020) 1-63
•
e-Print:
- 1709.04464
•
DOI:
- 10.1016/j.physrep.2019.11.001

[5]

Nuclear PDFs at NLO - status report and review of the EPS09 results

K.J. Eskola
(
- Jyvaskyla U. and
- Helsinki Inst. of Phys.
)
,
H. Paukkunen
(
- Santiago de Compostela U. and
- Santiago de Compostela U., IGFAE
)
,
C.A. Salgado
(
- Santiago de Compostela U. and
- Santiago de Compostela U., IGFAE
)

- Nucl.Phys.A 855 (2011) 150-157
•
e-Print:
- 1011.6534
•
DOI:
- 10.1016/j.nuclphysa.2011.02.032

[6]

The Theory and Phenomenology of Perturbative QCD Based Jet Quenching

A. Majumder
(
- Ohio State U.
)
,
M. Van Leeuwen
(
- Utrecht U.
)

- Prog.Part.Nucl.Phys. 66 (2011) 41-92
•
e-Print:
- 1002.2206
•
DOI:
- 10.1016/j.ppnp.2010.09.001

[7]

Measurement of jet quenching with semi-inclusive hadron-jet distributions in central Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV

ALICE

Collaboration

•

Jaroslav Adam
(
- Prague, Tech. U.
)

et al.

- JHEP 09 (2015) 170
•
e-Print:
- 1506.03984
•
DOI:
- 10.1007/JHEP09(2015)170

[8]

Measurements of jet quenching with semi-inclusive hadron+jet distributions in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV

STAR

Collaboration

•

L. Adamczyk
(
- AGH-UST, Cracow
)

et al.

- Phys.Rev.C 96 (2017) 2, 024905
•
e-Print:
- 1702.01108
•
DOI:
- 10.1103/PhysRevC.96.024905

[9]

Study of Jet Quenching with $Z+\text{jet}$ Correlations in Pb-Pb and $pp$ Collisions at ${\sqrt{s}}_{NN}=5.02\text{ }\text{ }\mathrm{TeV}$

CMS

Collaboration

•

Albert M Sirunyan
(
- Yerevan Phys. Inst.
)

et al.

- Phys.Rev.Lett. 119 (2017) 8, 082301
•
e-Print:
- 1702.01060
•
DOI:
- 10.1103/PhysRevLett.119.082301

[10]

Measurement of photon–jet transverse momentum correlations in 5.02 TeV Pb + Pb and $pp$ collisions with ATLAS

ATLAS

Collaboration

•

Morad Aaboud
(
- Oujda U.
)

et al.

- Phys.Lett.B 789 (2019) 167-190
•
e-Print:
- 1809.07280
•
DOI:
- 10.1016/j.physletb.2018.12.023

[11]

Medium modification of the shape of small-radius jets in central Pb-Pb collisions at $\sqrt{s_{\mathrm {NN}}} = 2.76\,\rm{TeV}$

ALICE

Collaboration

•

Shreyasi Acharya
(
- Calcutta, VECC
)

et al.

- JHEP 10 (2018) 139
•
e-Print:
- 1807.06854
•
DOI:
- 10.1007/JHEP10(2018)139

[12]

Modification of Jet Shapes in PbPb Collisions at $\sqrt {s_{NN}} = 2.76$ TeV

CMS

Collaboration

•

Serguei Chatrchyan
(
- Yerevan Phys. Inst.
)

et al.

- Phys.Lett.B 730 (2014) 243-263
•
e-Print:
- 1310.0878
•
DOI:
- 10.1016/j.physletb.2014.01.042

[13]

Observation of Medium-Induced Modifications of Jet Fragmentation in Pb-Pb Collisions at $\sqrt{s_{NN}}=$ 5.02 TeV Using Isolated Photon-Tagged Jets

CMS

Collaboration

•

Albert M Sirunyan
(
- Yerevan Phys. Inst.
)

et al.

- Phys.Rev.Lett. 121 (2018) 24, 242301
•
e-Print:
- 1801.04895
•
DOI:
- 10.1103/PhysRevLett.121.242301

[14]

Measurement of jet fragmentation in Pb+Pb and $pp$ collisions at $\sqrt{{s_\mathrm{NN}}} = 2.76$ TeV with the ATLAS detector at the LHC

ATLAS

Collaboration

•

Morad Aaboud
(
- Oujda U.
)

et al.

- Eur.Phys.J.C 77 (2017) 6, 379
•
e-Print:
- 1702.00674
•
DOI:
- 10.1140/epjc/s10052-017-4915-5

[15]

First measurement of jet mass in Pb–Pb and p–Pb collisions at the LHC

ALICE

Collaboration

•

S. Acharya

et al.

- Phys.Lett.B 776 (2018) 249-264
•
e-Print:
- 1702.00804
•
DOI:
- 10.1016/j.physletb.2017.11.044

[16]

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

CMS

Collaboration

•

Albert M Sirunyan
(
- Yerevan Phys. Inst.
)

et al.

- JHEP 10 (2018) 161
•
e-Print:
- 1805.05145
•
DOI:
- 10.1007/JHEP10(2018)161

[17]

Extracting the jet transport coefficient from jet quenching in high-energy heavy-ion collisions

JET

Collaboration

•

Karen M. Burke
(
- Wayne State U., Detroit
)

et al.

- Phys.Rev.C 90 (2014) 1, 014909
•
e-Print:
- 1312.5003
•
DOI:
- 10.1103/PhysRevC.90.014909

[18]

Les Houches 2017: Physics at TeV Colliders Standard Model Working Group Report

J.R. Andersen
(
- Durham U., IPPP
)
,
J. Bellm
(
- Lund U., Dept. Theor. Phys.
)
,
J. Bendavid
(
- CERN
)
,
N. Berger
(
- Annecy, LAPP
)
,
D. Bhatia
(
- Tata Inst.
)

et al.

e-Print:
- 1803.07977

[19]

Coherence Effects in Deep Inelastic Scattering

- Z.Phys.C 43 (1989) 625
•
DOI:
- 10.1007/BF01550942

[20]

The Lund Jet Plane

Frédéric A. Dreyer
(
- MIT, Cambridge, CTP
)
,
Gavin P. Salam
(
- CERN
)
,
Grégory Soyez
(
- IPhT, Saclay
)

- JHEP 12 (2018) 064
•
e-Print:
- 1807.04758
•
DOI:
- 10.1007/JHEP12(2018)064

[21]

Novel tools and observables for jet physics in heavy-ion collisions

Harry Arthur Andrews
(
- Birmingham U.
)
,
David d'Enterria
(
- CERN
)
,
Liliana Apolinario
(
- CMAF, Lisbon and
- Lisbon, IST
)
,
Redmer Alexander Bertens
(
- Tennessee U.
)
,
Christian Bierlich
(
- Lund U. and
- Bohr Inst.
)

et al.

- J.Phys.G 47 (2020) 6, 065102
•
e-Print:
- 1808.03689
•
DOI:
- 10.1088/1361-6471/ab7cbc

[22]

Towards an understanding of jet substructure

Mrinal Dasgupta
(
- Manchester U.
)
,
Alessandro Fregoso
(
- Manchester U.
)
,
Simone Marzani
(
- Durham U.
)
,
Gavin P. Salam
(
- CERN and
- Paris, LPTHE
)

- JHEP 09 (2013) 029
•
e-Print:
- 1307.0007
•
DOI:
- 10.1007/JHEP09(2013)029

[23]

Soft Drop

Andrew J. Larkoski
(
- MIT, Cambridge, CTP
)
,
Simone Marzani
(
- Durham U., IPPP
)
,
Gregory Soyez
(
- IPhT, Saclay and
- DAPNIA, Saclay
)
,
Jesse Thaler
(
- MIT, Cambridge, CTP
)

- JHEP 05 (2014) 146
•
e-Print:
- 1402.2657
•
DOI:
- 10.1007/JHEP05(2014)146

[24]

Sensitivity of jet substructure to jet-induced medium response

Guilherme Milhano
(
- LIP, Lisbon and
- CERN
)
,
Urs Achim Wiedemann
(
- CERN
)
,
Korinna Christine Zapp
(
- LIP, Lisbon and
- CERN
)

- Phys.Lett.B 779 (2018) 409-413
•
e-Print:
- 1707.04142
•
DOI:
- 10.1016/j.physletb.2018.01.029

[25]

Molière scattering in quark-gluon plasma: finding point-like scatterers in a liquid

Francesco D'Eramo
(
- U. Padua, Dept. Phys. Astron. and
- INFN, Padua
)
,
Krishna Rajagopal
(
- MIT, Cambridge, CTP
)
,
Yi Yin
(
- MIT, Cambridge, CTP
)

- JHEP 01 (2019) 172
•
e-Print:
- 1808.03250
•
DOI:
- 10.1007/JHEP01(2019)172

1-25 of 55
1
2
3
25 / page