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Measurements of Groomed-Jet Substructure of Charm Jets Tagged by D
Acharya, S; Adamová, D; Adler, A; Aglieri Rinella, G; Agnello, M; Agrawal, N; Ahammed, Z; Ahmad, S; Ahn, S U; Ahuja, I; Akindinov, A; Al-Turany, M; Aleksandrov, D; Alessandro, B; Alfanda, H M; Alfaro Molina, R; Ali, B; Ali, Y; Alici, A; Alizadehvandchali, N; Alkin, A; Alme, J; Alocco, G; Alt, T; Altsybeev, I; Anaam, M N; Andrei, C; Andronic, A; Anguelov, V; Antinori, F; Antonioli, P; Anuj, C; Apadula, N; Aphecetche, L; Appelshäuser, H; Arata, C; Arcelli, S; Aresti, M; Arnaldi, R; Arsene, I C; Arslandok, M; Augustinus, A; Averbeck, R; Azmi, M D; Badalà, A; Baek, Y W; Bai, X; Bailhache, R; Bailung, Y; Bala, R.
Afiliação
  • Acharya S; Université Clermont Auvergne, CNRS/IN2P3, LPC, Clermont-Ferrand, France.
  • Adamová D; Nuclear Physics Institute of the Czech Academy of Sciences, Husinec-Rez, Czech Republic.
  • Adler A; Johann-Wolfgang-Goethe Universität Frankfurt Institut für Informatik, Fachbereich Informatik und Mathematik, Frankfurt, Germany.
  • Aglieri Rinella G; European Organization for Nuclear Research (CERN), Geneva, Switzerland.
  • Agnello M; Dipartimento DISAT del Politecnico and Sezione INFN, Turin, Italy.
  • Agrawal N; INFN, Sezione di Bologna, Bologna, Italy.
  • Ahammed Z; Variable Energy Cyclotron Centre, Homi Bhabha National Institute, Kolkata, India.
  • Ahmad S; Department of Physics, Aligarh Muslim University, Aligarh, India.
  • Ahn SU; Korea Institute of Science and Technology Information, Daejeon, Republic of Korea.
  • Ahuja I; Faculty of Science, P.J. Safárik University, Kosice, Slovak Republic.
  • Akindinov A; Affiliated with an institute covered by a cooperation agreement with CERN.
  • Al-Turany M; Research Division and ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany.
  • Aleksandrov D; Affiliated with an institute covered by a cooperation agreement with CERN.
  • Alessandro B; INFN, Sezione di Torino, Turin, Italy.
  • Alfanda HM; Central China Normal University, Wuhan, China.
  • Alfaro Molina R; Instituto de Física, Universidad Nacional Autónoma de México, Mexico City, Mexico.
  • Ali B; Department of Physics, Aligarh Muslim University, Aligarh, India.
  • Ali Y; COMSATS University Islamabad, Islamabad, Pakistan.
  • Alici A; Dipartimento di Fisica e Astronomia dell'Università and Sezione INFN, Bologna, Italy.
  • Alizadehvandchali N; University of Houston, Houston, Texas, USA.
  • Alkin A; European Organization for Nuclear Research (CERN), Geneva, Switzerland.
  • Alme J; Department of Physics and Technology, University of Bergen, Bergen, Norway.
  • Alocco G; INFN, Sezione di Cagliari, Cagliari, Italy.
  • Alt T; Institut für Kernphysik, Johann Wolfgang Goethe-Universität Frankfurt, Frankfurt, Germany.
  • Altsybeev I; Affiliated with an institute covered by a cooperation agreement with CERN.
  • Anaam MN; Central China Normal University, Wuhan, China.
  • Andrei C; Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest, Romania.
  • Andronic A; Westfälische Wilhelms-Universität Münster, Institut für Kernphysik, Münster, Germany.
  • Anguelov V; Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany.
  • Antinori F; INFN, Sezione di Padova, Padova, Italy.
  • Antonioli P; INFN, Sezione di Bologna, Bologna, Italy.
  • Anuj C; Department of Physics, Aligarh Muslim University, Aligarh, India.
  • Apadula N; Lawrence Berkeley National Laboratory, Berkeley, California, USA.
  • Aphecetche L; SUBATECH, IMT Atlantique, Nantes Université, CNRS-IN2P3, Nantes, France.
  • Appelshäuser H; Institut für Kernphysik, Johann Wolfgang Goethe-Universität Frankfurt, Frankfurt, Germany.
  • Arata C; Laboratoire de Physique Subatomique et de Cosmologie, Université Grenoble-Alpes, CNRS-IN2P3, Grenoble, France.
  • Arcelli S; Dipartimento di Fisica e Astronomia dell'Università and Sezione INFN, Bologna, Italy.
  • Aresti M; INFN, Sezione di Cagliari, Cagliari, Italy.
  • Arnaldi R; INFN, Sezione di Torino, Turin, Italy.
  • Arsene IC; Department of Physics, University of Oslo, Oslo, Norway.
  • Arslandok M; Yale University, New Haven, Connecticut, USA.
  • Augustinus A; European Organization for Nuclear Research (CERN), Geneva, Switzerland.
  • Averbeck R; Research Division and ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany.
  • Azmi MD; Department of Physics, Aligarh Muslim University, Aligarh, India.
  • Badalà A; INFN, Sezione di Catania, Catania, Italy.
  • Baek YW; Gangneung-Wonju National University, Gangneung, Republic of Korea.
  • Bai X; University of Science and Technology of China, Hefei, China.
  • Bailhache R; Institut für Kernphysik, Johann Wolfgang Goethe-Universität Frankfurt, Frankfurt, Germany.
  • Bailung Y; Indian Institute of Technology Indore, Indore, India.
  • Bala R; Physics Department, University of Jammu, Jammu, India.
Phys Rev Lett ; 131(19): 192301, 2023 Nov 10.
Article em En | MEDLINE | ID: mdl-38000395
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 D^{0} meson. The measurement is made in proton-proton collisions at sqrt[s]=13 TeV, in the low jet transverse-momentum interval of 15≤p_{T}^{jet 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.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Phys Rev Lett Ano de publicação: 2023 Tipo de documento: Article
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Phys Rev Lett Ano de publicação: 2023 Tipo de documento: Article