First Observation of an Attractive Interaction between a Proton and a Cascade Baryon

. 2019 Sep 13 ; 123 (11) : 112002.

Status PubMed-not-MEDLINE Jazyk angličtina Země Spojené státy americké Médium print

Typ dokumentu časopisecké články

Perzistentní odkaz   https://www.medvik.cz/link/pmid31573229

This Letter presents the first experimental observation of the attractive strong interaction between a proton and a multistrange baryon (hyperon) Ξ^{-}. The result is extracted from two-particle correlations of combined p-Ξ^{-}⊕p[over ¯]-Ξ[over ¯]^{+} pairs measured in p-Pb collisions at sqrt[s_{NN}]=5.02 TeV at the LHC with ALICE. The measured correlation function is compared with the prediction obtained assuming only an attractive Coulomb interaction and a standard deviation in the range [3.6, 5.3] is found. Since the measured p-Ξ^{-}⊕p[over ¯]-Ξ[over ¯]^{+} correlation is significantly enhanced with respect to the Coulomb prediction, the presence of an additional, strong, attractive interaction is evident. The data are compatible with recent lattice calculations by the HAL-QCD Collaboration, with a standard deviation in the range [1.8, 3.7]. The lattice potential predicts a shallow repulsive Ξ^{-} interaction within pure neutron matter and this implies stiffer equations of state for neutron-rich matter including hyperons. Implications of the strong interaction for the modeling of neutron stars are discussed.

A 1 Alikhanyan National Science Laboratory Foundation

Bogolyubov Institute for Theoretical Physics National Academy of Sciences of Ukraine

Bose Institute Department of Physics

Budker Institute for Nuclear Physics

California Polytechnic State University

Central China Normal University

Centre de Calcul de l'IN2P3 Villeurbanne

Centre for Astroparticle Physics and Space Science

Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear

Centro de Investigación y de Estudios Avanzados

Centro Fermi Museo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi'

Chicago State University

China Institute of Atomic Energy

Chonbuk National University

Comenius University Bratislava Faculty of Mathematics Physics and Informatics

COMSATS University Islamabad

Creighton University

Department of Physics Aligarh Muslim University

Department of Physics and Technology University of Bergen

Department of Physics Pusan National University

Department of Physics Sejong University

Department of Physics University of California

Department of Physics University of Oslo

Dipartimento di Fisica 'E R Caianiello' dell'Università

Dipartimento di Fisica dell'Università

Dipartimento di Fisica dell'Università 'La Sapienza'

Dipartimento di Fisica e Astronomia dell'Università

Dipartimento di Scienze e Innovazione Tecnologica dell'Università del Piemonte Orientale and INFN Sezione di Torino

Dipartimento DISAT del Politecnico and Sezione INFN

Dipartimento Interateneo di Fisica 'M Merlin'

European Organization for Nuclear Research

Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture University of Split

Faculty of Engineering and Science Western Norway University of Applied Sciences

Faculty of Nuclear Sciences and Physical Engineering Czech Technical University Prague

Faculty of Science P J Šafárik University

Frankfurt Institute for Advanced Studies Johann Wolfgang Goethe Universität Frankfurt

Gangneung Wonju National University

Gauhati University Department of Physics

Gruppo Collegato INFN

Helmholtz Institut für Strahlen und Kernphysik Rheinische Friedrich Wilhelms Universität Bonn

Helsinki Institute of Physics

High Energy Physics Group Universidad Autónoma de Puebla

Hiroshima University

Hochschule Worms Zentrum für Technologietransfer und Telekommunikation

Horia Hulubei National Institute of Physics and Nuclear Engineering

Indian Institute of Technology Bombay

Indian Institute of Technology Indore

Indonesian Institute of Sciences

INFN Laboratori Nazionali di Frascati

INFN Sezione di Bari

INFN Sezione di Bologna

INFN Sezione di Cagliari

INFN Sezione di Catania

INFN Sezione di Padova

INFN Sezione di Roma

INFN Sezione di Torino

INFN Sezione di Trieste

Inha University

Institut de Physique Nucléaire d'Orsay Université de Paris Sud Université Paris Saclay

Institut für Kernphysik Johann Wolfgang Goethe Universität Frankfurt

Institute for Nuclear Research Academy of Sciences

Institute for Subatomic Physics Utrecht University Nikhef

Institute for Theoretical and Experimental Physics

Institute of Experimental Physics Slovak Academy of Sciences

Institute of Physics Homi Bhabha National Institute

Institute of Physics of the Czech Academy of Sciences

Institute of Space Science

Instituto de Ciencias Nucleares Universidad Nacional Autónoma de México

Instituto de Física Universidad Nacional Autónoma de México

Instituto de Física Universidade Federal do Rio Grande do Sul

iThemba LABS National Research Foundation

Johann Wolfgang Goethe Universität Frankfurt Institut für Informatik Fachbereich Informatik und Mathematik

Joint Institute for Nuclear Research

Korea Institute of Science and Technology Information

KTO Karatay University

Laboratoire de Physique Subatomique et de Cosmologie Université Grenoble Alpes CNRS IN2P3

Lawrence Berkeley National Laboratory

Lund University Department of Physics Division of Particle Physics

Nagasaki Institute of Applied Science

Nara Women's University

National and Kapodistrian University of Athens School of Science Department of Physics

National Centre for Nuclear Research

National Institute of Science Education and Research Homi Bhabha National Institute

National Nuclear Research Center

National Research Centre Kurchatov Institute

Niels Bohr Institute University of Copenhagen

Nikhef National institute for subatomic physics

NRC Kurchatov Institute IHEP

NRNU Moscow Engineering Physics Institute

Nuclear Physics Group STFC Daresbury Laboratory

Nuclear Physics Institute of the Czech Academy of Sciences

Oak Ridge National Laboratory

Ohio State University

Petersburg Nuclear Physics Institute

Physics department Faculty of science University of Zagreb

Physics Department Panjab University

Physics Department University of Jammu

Physics Department University of Rajasthan

Physik Department Technische Universität München

Physikalisches Institut Eberhard Karls Universität Tübingen

Physikalisches Institut Ruprecht Karls Universität Heidelberg

Politecnico di Bari

Research Division and ExtreMe Matter Institute EMMI GSI Helmholtzzentrum für Schwerionenforschung GmbH

Rudjer Bošković Institute

Russian Federal Nuclear Center

Saha Institute of Nuclear Physics Homi Bhabha National Institute

School of Physics and Astronomy University of Birmingham

Sección Física Departamento de Ciencias Pontificia Universidad Católica del Perú

Sezione INFN

Shanghai Institute of Applied Physics

St Petersburg State University

Stefan Meyer Institut für Subatomare Physik

SUBATECH IMT Atlantique Université de Nantes CNRS IN2P3

Suranaree University of Technology

Technical University of Košice

Technische Universität München Excellence Cluster 'Universe'

The Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences

The University of Texas at Austin

Universidad Autónoma de Sinaloa

Universidade de S ao Paulo

Universidade Estadual de Campinas

Universidade Federal do ABC

Università degli Studi di Foggia

Università degli Studi di Pavia

Università di Brescia

Université Clermont Auvergne CNRS IN2P3 LPC

Université de Lyon Université Lyon 1 CNRS IN2P3 IPN Lyon Villeurbanne

Université de Strasbourg CNRS IPHC UMR 7178 F 67000 Strasbourg France

Université Paris Saclay Centre d'Etudes de Saclay

University College of Southeast Norway

University of Cape Town

University of Houston

University of Jyväskylä

University of Liverpool

University of Science and Techonology of China

University of Tennessee

University of the Witwatersrand

University of Tokyo

University of Tsukuba

Variable Energy Cyclotron Centre Homi Bhabha National Institute

Warsaw University of Technology

Wayne State University

Westfälische Wilhelms Universität Münster Institut für Kernphysik

Wigner Research Centre for Physics Hungarian Academy of Sciences

Yale University

Yonsei University

Citace poskytuje Crossref.org

Nejnovějších 20 citací...

Zobrazit více v
Medvik | PubMed

QCD challenges from pp to AA collisions: 4th edition

. 2024 ; 84 (4) : 421. [epub] 20240423

Najít záznam

Citační ukazatele

Pouze přihlášení uživatelé

Možnosti archivace

Nahrávání dat ...