Measurement of antiproton production from antihyperon decays in pHe collisions at √sNN=110GeV

LHCb Collaboration

doi:10.1140/epjc/s10052-023-11673-x

Measurement of antiproton production from antihyperon decays in pHe collisions at √sNN=110GeV

LHCb Collaboration

University of Modena and Reggio Emilia
European Organization for Nuclear Research
Science Park 105
University of Warwick
Physik-Institut der Universität Zürich
University of Liverpool
Universidade de Santiago de Compostela
University of Bristol
Clermont-Auvergne University
Sorbonne Université
University of Michigan, Ann Arbor
Sezione INFN di Milano
University of Cincinnati
University of Dortmund
University of Glasgow
University of Barcelona
University of Manchester
University of Cambridge
Instituto de Biofisica da UFRJ
Université Paris-Saclay
Istituto Nazionale di Fisica Nucleare, Sezione di Firenze
Sezione INFN di Ferrara
Syracuse University
University of Chinese Academy of Sciences
University of Heidelberg
Aix-Marseille Université
Ip Paris
ENAC-IIC-GEL
Centro Brasileiro de Pesquisas Fisicas
University of Florence
Imperial College London
RWTH Aachen University
Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
Scuola Normale Superiore di Pisa
Institute of High Energy Physics, Chinese Academy of Sciences
LNF-INFN
University of Padova
Institute for Nuclear Physics
Wuhan University
University of Birmingham
University of Maryland, College Park
Sezione INFN di Cagliari
South China Normal University
University of Ferrara
INFN Sezione di Milano-Bicocca
University of Milano-Bicocca
Universitat Ramon LLull - CSIC
Maastricht University
INFN Sezione di Bologna
University of Bologna
INFN Roma Tor Vergata
Sezione di Genova
University of Genoa
University of Oxford
Laboratoire de Physique des Particules
Tsinghua University
Institute of Nuclear Research, National Academy of Sciences in Ukraine
University of Edinburgh
Horia Hulubei National Institute of Physics and Nuclear Engineering
INFN Sezione di Bari
Massachusetts Institute of Technology
MST-8, Los Alamos National Laboratory
Universidad Nacional Autónoma de Honduras
Hunan University
ICS/University of Groningen
Università degli studi di Bari Aldo Moro
Universitá di Cagliari
Eötvös Loránd University
University College Dublin
INFN Sezione di Perugia
CCLRC Rutherford Appleton Laboratory
Monash University
Uppsala University
Agh University of Science and Technology Faculty of Computer Science
State Key Laboratory of Nuclear Physics and Technology
National Centre for Nuclear Research (NCBJ)
University of Rome “Tor Vergata”
Pontifícia Universidade Católica do Rio de Janeiro
Universidade Federal Do Triângulo Mineiro (UFTM)
Central China Normal University
University of Valencia
Kharkov Institute of Physics and Technology
Vrije Universiteit Amsterdam
University of Siena
University of Milano
Central South University
University of Perugia
Sezione di Roma
University Bonn
Technische Universität München
Universidad Nacional de Colombia
University of Pisa
Università degli Studi della Basilicata
Max-Planck-Institut für Kernphysik
University of Urbino Carlo Bo

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

Résumé

The interpretation of cosmic antiproton flux measurements from space-borne experiments is currently limited by the knowledge of the antiproton production cross-section in collisions between primary cosmic rays and the interstellar medium. Using collisions of protons with an energy of 6.5 TeV incident on helium nuclei at rest in the proximity of the interaction region of the LHCb experiment, the ratio of antiprotons originating from antihyperon decays to prompt production is measured for antiproton momenta between 12 and 110GeV\!/c . The dominant antihyperon contribution, namely Λ¯ → p¯ π⁺ decays from promptly produced Λ¯ particles, is also exclusively measured. The results complement the measurement of prompt antiproton production obtained from the same data sample. At the energy scale of this measurement, the antihyperon contributions to antiproton production are observed to be significantly larger than predictions of commonly used hadronic production models.

langue originale	Anglais
Numéro d'article	543
journal	European Physical Journal C
Volume	83
Numéro de publication	6
Les DOIs	https://doi.org/10.1140/epjc/s10052-023-11673-x
état	Publié - 1 juin 2023

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10.1140/epjc/s10052-023-11673-x

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@article{9e70342304804a90b4f6c6e98ab0c046,

title = "Measurement of antiproton production from antihyperon decays in pHe collisions at √sNN=110GeV",

abstract = "The interpretation of cosmic antiproton flux measurements from space-borne experiments is currently limited by the knowledge of the antiproton production cross-section in collisions between primary cosmic rays and the interstellar medium. Using collisions of protons with an energy of 6.5 TeV incident on helium nuclei at rest in the proximity of the interaction region of the LHCb experiment, the ratio of antiprotons originating from antihyperon decays to prompt production is measured for antiproton momenta between 12 and 110GeV\textbackslash{}!/c . The dominant antihyperon contribution, namely Λ¯ → p¯ π+ decays from promptly produced Λ¯ particles, is also exclusively measured. The results complement the measurement of prompt antiproton production obtained from the same data sample. At the energy scale of this measurement, the antihyperon contributions to antiproton production are observed to be significantly larger than predictions of commonly used hadronic production models.",

author = "\{LHCb Collaboration\} and R. Aaij and Abdelmotteleb, \{A. S.W.\} and Beteta, \{C. Abellan\} and F. Abudin{\'e}n and T. Ackernley and B. Adeva and M. Adinolfi and H. Afsharnia and C. Agapopoulou and Aidala, \{C. A.\} and S. Aiola and Z. Ajaltouni and S. Akar and K. Akiba and J. Albrecht and F. Alessio and M. Alexander and \{Alfonso Albero\}, A. and Z. Aliouche and \{Alvarez Cartelle\}, P. and S. Amato and Amey, \{J. L.\} and Y. Amhis and L. An and L. Anderlini and M. Andersson and A. Andreianov and M. Andreotti and D. Andreou and D. Ao and F. Archilli and A. Artamonov and M. Artuso and E. Aslanides and M. Atzeni and B. Audurier and S. Bachmann and M. Bachmayer and Back, \{J. J.\} and A. Bailly-reyre and \{Baladron Rodriguez\}, P. and V. Balagura and W. Baldini and \{Baptista de Souza Leite\}, J. and M. Barbetti and Barlow, \{R. J.\} and S. Barsuk and W. Barter and F. Fleuret and E. Maurice",

note = "Publisher Copyright: {\textcopyright} 2023, The Author(s).",

year = "2023",

month = jun,

day = "1",

doi = "10.1140/epjc/s10052-023-11673-x",

language = "English",

volume = "83",

journal = "European Physical Journal C",

issn = "1434-6044",

number = "6",

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TY - JOUR

T1 - Measurement of antiproton production from antihyperon decays in pHe collisions at √sNN=110GeV

AU - LHCb Collaboration

AU - Aaij, R.

AU - Abdelmotteleb, A. S.W.

AU - Beteta, C. Abellan

AU - Abudinén, F.

AU - Ackernley, T.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Afsharnia, H.

AU - Agapopoulou, C.

AU - Aidala, C. A.

AU - Aiola, S.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Akiba, K.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Alfonso Albero, A.

AU - Aliouche, Z.

AU - Alvarez Cartelle, P.

AU - Amato, S.

AU - Amey, J. L.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Andersson, M.

AU - Andreianov, A.

AU - Andreotti, M.

AU - Andreou, D.

AU - Ao, D.

AU - Archilli, F.

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Atzeni, M.

AU - Audurier, B.

AU - Bachmann, S.

AU - Bachmayer, M.

AU - Back, J. J.

AU - Bailly-reyre, A.

AU - Baladron Rodriguez, P.

AU - Balagura, V.

AU - Baldini, W.

AU - Baptista de Souza Leite, J.

AU - Barbetti, M.

AU - Barlow, R. J.

AU - Barsuk, S.

AU - Barter, W.

AU - Fleuret, F.

AU - Maurice, E.

PY - 2023/6/1

Y1 - 2023/6/1

N2 - The interpretation of cosmic antiproton flux measurements from space-borne experiments is currently limited by the knowledge of the antiproton production cross-section in collisions between primary cosmic rays and the interstellar medium. Using collisions of protons with an energy of 6.5 TeV incident on helium nuclei at rest in the proximity of the interaction region of the LHCb experiment, the ratio of antiprotons originating from antihyperon decays to prompt production is measured for antiproton momenta between 12 and 110GeV\!/c . The dominant antihyperon contribution, namely Λ¯ → p¯ π+ decays from promptly produced Λ¯ particles, is also exclusively measured. The results complement the measurement of prompt antiproton production obtained from the same data sample. At the energy scale of this measurement, the antihyperon contributions to antiproton production are observed to be significantly larger than predictions of commonly used hadronic production models.

AB - The interpretation of cosmic antiproton flux measurements from space-borne experiments is currently limited by the knowledge of the antiproton production cross-section in collisions between primary cosmic rays and the interstellar medium. Using collisions of protons with an energy of 6.5 TeV incident on helium nuclei at rest in the proximity of the interaction region of the LHCb experiment, the ratio of antiprotons originating from antihyperon decays to prompt production is measured for antiproton momenta between 12 and 110GeV\!/c . The dominant antihyperon contribution, namely Λ¯ → p¯ π+ decays from promptly produced Λ¯ particles, is also exclusively measured. The results complement the measurement of prompt antiproton production obtained from the same data sample. At the energy scale of this measurement, the antihyperon contributions to antiproton production are observed to be significantly larger than predictions of commonly used hadronic production models.

U2 - 10.1140/epjc/s10052-023-11673-x

DO - 10.1140/epjc/s10052-023-11673-x

M3 - Article

AN - SCOPUS:85163652366

SN - 1434-6044

VL - 83

JO - European Physical Journal C

JF - European Physical Journal C

IS - 6

M1 - 543

ER -

Measurement of antiproton production from antihyperon decays in pHe collisions at √sNN=110GeV

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