Measurements of Groomed-Jet Substructure of Charm Jets Tagged by D0 Mesons in Proton-Proton Collisions at s =13 TeV

ALICE Collaboration

doi:10.1103/PhysRevLett.131.192301

Measurements of Groomed-Jet Substructure of Charm Jets Tagged by D0 Mesons in Proton-Proton Collisions at s =13 TeV

ALICE Collaboration

Sección de Física

Université Clermont Auvergne
Czech Academy of Sciences
Goethe University Frankfurt
CERN
National Institute for Nuclear Physics
Variable Energy Cyclotron Centre
Aligarh Muslim University
Korea Institute of Science and Technology Information
Pavol Jozef Šafárik University
GSI Helmholtz Centre for Heavy Ion Research
Central China Normal University
Universidad Nacional Autónoma de México
COMSATS University Islamabad
University of Houston
University of Bergen
Horia Hulubei National Institute of Physics and Nuclear Engineering
University of Münster
Heidelberg University
Lawrence Berkeley National Laboratory
Nantes Université
Université Grenoble Alpes
University of Oslo
Yale University
Gangneung-Wonju National University
University of Science and Technology of China
Indian Institute of Technology Indore
University of Jammu
Université Paris-Saclay
AGH University of Krakow
Bose Institute
University of Catania
Technical University of Munich
National and Kapodistrian University of Athens
Wigner Research Centre for Physics
STFC Daresbury Laboratory
Universidade de São Paulo
University of Liverpool
Lund University
Max Planck Institute for Physics (Werner Heisenberg Institute)
Indian Institute of Technology Bombay
University of Copenhagen
Université de Strasbourg
Institute for Space Sciences
Gauhati University
Faculty of Nuclear Sciences and Physical Engineering
Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
University of Texas at Austin
University of Pavia
Oak Ridge National Laboratory
Inha University
University of Brescia
Polytechnic University of Bari
Austrian Academy of Sciences
National Research Foundation
University of the Witwatersrand
Pontificia Universidad Católica del Perú
Universidad Autonoma de Sinaloa
National University of Science and Technology POLITEHNICA Bucharest
Université de Lyon
Homi Bhabha National Institute
Benemerita Universidad Autonoma de Puebla
Universidade Estadual de Campinas
Agenzia nazionale per le nuove tecnologie, l'energia e lo sviluppo economico sostenibile
National Institute for Subatomic Physics
University of Tsukuba
University of Birmingham
Polytechnic University of Turin
Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
University of Eastern Piedmont
Universidade Federal do ABC
Warsaw University of Technology
University of California at Berkeley
Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear
University of Cape Town
Panjab University
Technical University of Kosice
Comenius University
University of Zagreb
Saga University
Chicago State University
National Nuclear Research Center
University of Kansas
Universidade Federal do Rio Grande do Sul
University of Tennessee, Knoxville
Nagasaki Institute of Applied Science
Wayne State University
University of Split
Utrecht University
A. Alikhanian Yerevan Institute of Physics
The University of Tokyo
Yonsei University
University of Bonn
Western Norway University of Applied Sciences
Centro de Investigacion y de Estudios Avanzados del Instituto Politécnico Nacional
Creighton University
University of Jyväskylä
Ohio State University
National Research and Innovation Agency Republic of Indonesia
Suranaree University of Technology
Slovak Academy of Sciences
KTO Karatay University
Zentrum für Technologie und Transfer (ZTT)
Pusan National University
Jeonbuk National University
Sejong University
Hiroshima University
California Polytechnic State University, San Luis Obispo
National Centre for Nuclear Research
University of South-Eastern Norway
China National Nuclear Corporation
Fudan University
University of Messina
University of Foggia
University of Helsinki
Chungbuk National University
University of Rajasthan
University of Wrocław
University of Tübingen
Nara Women's University
Sofia University
NASU - Bogolyubov Institute for Theoretical Physics

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13 Citas (Scopus)

Resumen

Understanding the role of parton mass and Casimir color factors in the quantum chromodynamics parton shower represents an important step in characterizing the emission properties of heavy quarks. Recent experimental advances in jet substructure techniques have provided the opportunity to isolate and characterize gluon emissions from heavy quarks. In this Letter, the first direct experimental constraint on the charm-quark splitting function is presented, obtained via the measurement of the groomed shared momentum fraction of the first splitting in charm jets, tagged by a reconstructed D0 meson. The measurement is made in proton-proton collisions at s=13 TeV, in the low jet transverse-momentum interval of 15≤pTjet ch<30 GeV/c where the emission properties are sensitive to parton mass effects. In addition, the opening angle of the first perturbative emission of the charm quark, as well as the number of perturbative emissions it undergoes, is reported. Comparisons to measurements of an inclusive-jet sample show a steeper splitting function for charm quarks compared with gluons and light quarks. Charm quarks also undergo fewer perturbative emissions in the parton shower, with a reduced probability of large-angle emissions.

Idioma original	Inglés
Número de artículo	192301
Publicación	Physical Review Letters
Volumen	131
N.º	19
DOI	https://doi.org/10.1103/PhysRevLett.131.192301
Estado	Publicada - 10 nov. 2023

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@article{cd22ed04401e418b99ae7455cc2d40bb,

title = "Measurements of Groomed-Jet Substructure of Charm Jets Tagged by D0 Mesons in Proton-Proton Collisions at s =13 TeV",

abstract = "Understanding the role of parton mass and Casimir color factors in the quantum chromodynamics parton shower represents an important step in characterizing the emission properties of heavy quarks. Recent experimental advances in jet substructure techniques have provided the opportunity to isolate and characterize gluon emissions from heavy quarks. In this Letter, the first direct experimental constraint on the charm-quark splitting function is presented, obtained via the measurement of the groomed shared momentum fraction of the first splitting in charm jets, tagged by a reconstructed D0 meson. The measurement is made in proton-proton collisions at s=13 TeV, in the low jet transverse-momentum interval of 15≤pTjet ch<30 GeV/c where the emission properties are sensitive to parton mass effects. In addition, the opening angle of the first perturbative emission of the charm quark, as well as the number of perturbative emissions it undergoes, is reported. Comparisons to measurements of an inclusive-jet sample show a steeper splitting function for charm quarks compared with gluons and light quarks. Charm quarks also undergo fewer perturbative emissions in the parton shower, with a reduced probability of large-angle emissions.",

author = "\{ALICE Collaboration\} and S. Acharya and D. Adamov{\'a} and A. Adler and \{Aglieri Rinella\}, G. and M. Agnello and N. Agrawal and Z. Ahammed and S. Ahmad and Ahn, \{S. U.\} and I. Ahuja and A. Akindinov and M. Al-Turany and D. Aleksandrov and B. Alessandro and Alfanda, \{H. M.\} and \{Alfaro Molina\}, R. and B. Ali and Y. Ali and A. Alici and N. Alizadehvandchali and A. Alkin and J. Alme and G. Alocco and T. Alt and I. Altsybeev and Anaam, \{M. N.\} and C. Andrei and A. Andronic and V. Anguelov and F. Antinori and P. Antonioli and C. Anuj and N. Apadula and L. Aphecetche and H. Appelsh{\"a}user and C. Arata and S. Arcelli and M. Aresti and R. Arnaldi and Arsene, \{I. C.\} and M. Arslandok and A. Augustinus and R. Averbeck and Azmi, \{M. D.\} and A. Badal{\`a} and Baek, \{Y. W.\} and X. Bai and R. Bailhache and \{Bazo Alba\}, \{J. L.\} and Gago, \{A. M.\}",

note = "Publisher Copyright: {\textcopyright} 2023 CERN.",

year = "2023",

month = nov,

day = "10",

doi = "10.1103/PhysRevLett.131.192301",

language = "English",

volume = "131",

journal = "Physical Review Letters",

issn = "0031-9007",

number = "19",

}

TY - JOUR

T1 - Measurements of Groomed-Jet Substructure of Charm Jets Tagged by D0 Mesons in Proton-Proton Collisions at s =13 TeV

AU - ALICE Collaboration

AU - Acharya, S.

AU - Adamová, D.

AU - Adler, A.

AU - Aglieri Rinella, G.

AU - Agnello, M.

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Ahmad, S.

AU - Ahn, S. U.

AU - Ahuja, I.

AU - Akindinov, A.

AU - Al-Turany, M.

AU - Aleksandrov, D.

AU - Alessandro, B.

AU - Alfanda, H. M.

AU - Alfaro Molina, R.

AU - Ali, B.

AU - Ali, Y.

AU - Alici, A.

AU - Alizadehvandchali, N.

AU - Alkin, A.

AU - Alme, J.

AU - Alocco, G.

AU - Alt, T.

AU - Altsybeev, I.

AU - Anaam, M. N.

AU - Andrei, C.

AU - Andronic, A.

AU - Anguelov, V.

AU - Antinori, F.

AU - Antonioli, P.

AU - Anuj, C.

AU - Apadula, N.

AU - Aphecetche, L.

AU - Appelshäuser, H.

AU - Arata, C.

AU - Arcelli, S.

AU - Aresti, M.

AU - Arnaldi, R.

AU - Arsene, I. C.

AU - Arslandok, M.

AU - Augustinus, A.

AU - Averbeck, R.

AU - Azmi, M. D.

AU - Badalà, A.

AU - Baek, Y. W.

AU - Bai, X.

AU - Bailhache, R.

AU - Bazo Alba, J. L.

AU - Gago, A. M.

PY - 2023/11/10

Y1 - 2023/11/10

N2 - Understanding the role of parton mass and Casimir color factors in the quantum chromodynamics parton shower represents an important step in characterizing the emission properties of heavy quarks. Recent experimental advances in jet substructure techniques have provided the opportunity to isolate and characterize gluon emissions from heavy quarks. In this Letter, the first direct experimental constraint on the charm-quark splitting function is presented, obtained via the measurement of the groomed shared momentum fraction of the first splitting in charm jets, tagged by a reconstructed D0 meson. The measurement is made in proton-proton collisions at s=13 TeV, in the low jet transverse-momentum interval of 15≤pTjet ch<30 GeV/c where the emission properties are sensitive to parton mass effects. In addition, the opening angle of the first perturbative emission of the charm quark, as well as the number of perturbative emissions it undergoes, is reported. Comparisons to measurements of an inclusive-jet sample show a steeper splitting function for charm quarks compared with gluons and light quarks. Charm quarks also undergo fewer perturbative emissions in the parton shower, with a reduced probability of large-angle emissions.

AB - Understanding the role of parton mass and Casimir color factors in the quantum chromodynamics parton shower represents an important step in characterizing the emission properties of heavy quarks. Recent experimental advances in jet substructure techniques have provided the opportunity to isolate and characterize gluon emissions from heavy quarks. In this Letter, the first direct experimental constraint on the charm-quark splitting function is presented, obtained via the measurement of the groomed shared momentum fraction of the first splitting in charm jets, tagged by a reconstructed D0 meson. The measurement is made in proton-proton collisions at s=13 TeV, in the low jet transverse-momentum interval of 15≤pTjet ch<30 GeV/c where the emission properties are sensitive to parton mass effects. In addition, the opening angle of the first perturbative emission of the charm quark, as well as the number of perturbative emissions it undergoes, is reported. Comparisons to measurements of an inclusive-jet sample show a steeper splitting function for charm quarks compared with gluons and light quarks. Charm quarks also undergo fewer perturbative emissions in the parton shower, with a reduced probability of large-angle emissions.

UR - https://www.scopus.com/pages/publications/85177792817

U2 - 10.1103/PhysRevLett.131.192301

DO - 10.1103/PhysRevLett.131.192301

M3 - Article

C2 - 38000395

AN - SCOPUS:85177792817

SN - 0031-9007

VL - 131

JO - Physical Review Letters

JF - Physical Review Letters

IS - 19

M1 - 192301

ER -

Measurements of Groomed-Jet Substructure of Charm Jets Tagged by D0 Mesons in Proton-Proton Collisions at s =13 TeV

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