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Measurement of the Low-Energy Antideuteron Inelastic Cross Section

. 2020 Oct 16 ; 125 (16) : 162001.

Status PubMed-not-MEDLINE Language English Country United States Media print

Document type Journal Article

In this Letter, we report the first measurement of the inelastic cross section for antideuteron-nucleus interactions at low particle momenta, covering a range of 0.3≤p<4 GeV/c. The measurement is carried out using p-Pb collisions at a center-of-mass energy per nucleon-nucleon pair of sqrt[s_{NN}]=5.02 TeV, recorded with the ALICE detector at the CERN LHC and utilizing the detector material as an absorber for antideuterons and antiprotons. The extracted raw primary antiparticle-to-particle ratios are compared to the results from detailed ALICE simulations based on the geant4 toolkit for the propagation of (anti)particles through the detector material. The analysis of the raw primary (anti)proton spectra serves as a benchmark for this study, since their hadronic interaction cross sections are well constrained experimentally. The first measurement of the inelastic cross section for antideuteron-nucleus interactions averaged over the ALICE detector material with atomic mass numbers ⟨A⟩=17.4 and 31.8 is obtained. The measured inelastic cross section points to a possible excess with respect to the Glauber model parametrization used in geant4 in the lowest momentum interval of 0.3≤p<0.47 GeV/c up to a factor 2.1. This result is relevant for the understanding of antimatter propagation and the contributions to antinuclei production from cosmic ray interactions within the interstellar medium. In addition, the momentum range covered by this measurement is of particular importance to evaluate signal predictions for indirect dark-matter searches.

A 1 Alikhanyan National Science Laboratory Foundation Yerevan Armenia

Bogolyubov Institute for Theoretical Physics National Academy of Sciences of Ukraine Kiev Ukraine

Bose Institute Department of Physics Kolkata India

Budker Institute for Nuclear Physics Novosibirsk Russia

California Polytechnic State University San Luis Obispo California USA

Central China Normal University Wuhan China

Centre de Calcul de l'IN2P3 Villeurbanne Lyon France

Centre for Astroparticle Physics and Space Science Kolkata India

Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear Havana Cuba

Centro de Investigación y de Estudios Avanzados Mexico City and Mérida Mexico

Centro Fermi Museo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi Rome Italy

Chicago State University Chicago Illinois USA

China Institute of Atomic Energy Beijing China

Comenius University Bratislava Faculty of Mathematics Physics and Informatics Bratislava Slovakia

COMSATS University Islamabad Islamabad Pakistan

Creighton University Omaha Nebraska USA

Department of Physics Aligarh Muslim University Aligarh India

Department of Physics and Technology University of Bergen Bergen Norway

Department of Physics Pusan National University Pusan Republic of Korea

Department of Physics Sejong University Seoul Republic of Korea

Department of Physics University of California Berkeley California USA

Department of Physics University of Oslo Oslo Norway

Dipartimento di Fisica 'E R Caianiello' dell'Università Salerno Italy

Dipartimento di Fisica dell'Università 'La Sapienza' Rome Italy

Dipartimento di Fisica dell'Università Cagliari Italy

Dipartimento di Fisica dell'Università Trieste Italy

Dipartimento di Fisica dell'Università Turin Italy

Dipartimento di Fisica e Astronomia dell'Università Bologna Italy

Dipartimento di Fisica e Astronomia dell'Università Catania Italy

Dipartimento di Fisica e Astronomia dell'Università Padova Italy

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

Dipartimento di Scienze MIFT Università di Messina Messina Italy

Dipartimento DISAT del Politecnico and Sezione INFN Turin Italy

Dipartimento Interateneo di Fisica 'M Merlin' Bari Italy

European Organization for Nuclear Research Geneva Switzerland

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

Faculty of Engineering and Science Western Norway University of Applied Sciences Bergen Norway

Faculty of Nuclear Sciences and Physical Engineering Czech Technical University Prague Prague Czech Republic

Faculty of Science P J Šafárik University Košice Slovakia

Frankfurt Institute for Advanced Studies Johann Wolfgang Goethe Universität Frankfurt Frankfurt Germany

Fudan University Shanghai China

Gangneung Wonju National University Gangneung Republic of Korea

Gauhati University Department of Physics Guwahati India

Gruppo Collegato INFN Salerno Italy

Helmholtz Institut für Strahlen und Kernphysik Rheinische Friedrich Wilhelms Universität Bonn Bonn Germany

Helsinki Institute of Physics Helsinki Finland

High Energy Physics Group Universidad Autónoma de Puebla Puebla Mexico

Hiroshima University Hiroshima Japan

Hochschule Worms Zentrum für Technologietransfer und Telekommunikation Worms Germany

Horia Hulubei National Institute of Physics and Nuclear Engineering Bucharest Romania

Indian Institute of Technology Bombay Mumbai India

Indian Institute of Technology Indore Indore India

Indonesian Institute of Sciences Jakarta Indonesia

INFN Laboratori Nazionali di Frascati Frascati Italy

INFN Sezione di Bari Bari Italy

INFN Sezione di Bologna Bologna Italy

INFN Sezione di Cagliari Cagliari Italy

INFN Sezione di Catania Catania Italy

INFN Sezione di Padova Padova Italy

INFN Sezione di Roma Rome Italy

INFN Sezione di Torino Turin Italy

INFN Sezione di Trieste Trieste Italy

Inha University Incheon Republic of Korea

Institut für Kernphysik Johann Wolfgang Goethe Universität Frankfurt Frankfurt Germany

Institute for Nuclear Research Academy of Sciences Moscow Russia

Institute for Subatomic Physics Utrecht University Nikhef Utrecht Netherlands

Institute of Experimental Physics Slovak Academy of Sciences Košice Slovakia

Institute of Physics Homi Bhabha National Institute Bhubaneswar India

Institute of Physics of the Czech Academy of Sciences Prague Czech Republic

Institute of Space Science Bucharest Romania

Instituto de Ciencias Nucleares Universidad Nacional Autónoma de México Mexico City Mexico

Instituto de Física Universidad Nacional Autónoma de México Mexico City Mexico

Instituto de Física Universidade Federal do Rio Grande do Sul Porto Alegre Brazil

iThemba LABS National Research Foundation Somerset West South Africa

Jeonbuk National University Jeonju Republic of Korea

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

Joint Institute for Nuclear Research Dubna Russia

Korea Institute of Science and Technology Information Daejeon Republic of Korea

KTO Karatay University Konya Turkey

Laboratoire de Physique des 2 Infinis Irène Joliot Curie Orsay France

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

Lawrence Berkeley National Laboratory Berkeley California USA

Lund University Department of Physics Division of Particle Physics Lund Sweden

Nagasaki Institute of Applied Science Nagasaki Japan

Nara Women's University Nara Japan

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

National Centre for Nuclear Research Warsaw Poland

National Institute of Science Education and Research Homi Bhabha National Institute Jatni India

National Nuclear Research Center Baku Azerbaijan

National Research Centre Kurchatov Institute Moscow Russia

Niels Bohr Institute University of Copenhagen Copenhagen Denmark

Nikhef National institute for subatomic physics Amsterdam Netherlands

NRC «Kurchatov Institute» ITEP Moscow Russia

NRC Kurchatov Institute IHEP Protvino Russia

NRNU Moscow Engineering Physics Institute Moscow Russia

Nuclear Physics Group STFC Daresbury Laboratory Daresbury United Kingdom

Nuclear Physics Institute of the Czech Academy of Sciences Řež u Prahy Czech Republic

Oak Ridge National Laboratory Oak Ridge Tennessee USA

Ohio State University Columbus Ohio USA

Petersburg Nuclear Physics Institute Gatchina Russia

Physics department Faculty of science University of Zagreb Zagreb Croatia

Physics Department Panjab University Chandigarh India

Physics Department University of Jammu Jammu India

Physics Department University of Rajasthan Jaipur India

Physik Department Technische Universität München Munich Germany

Physikalisches Institut Eberhard Karls Universität Tübingen Tübingen Germany

Physikalisches Institut Ruprecht Karls Universität Heidelberg Heidelberg Germany

Politecnico di Bari Bari Italy

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

Rudjer Bošković Institute Zagreb Croatia

Russian Federal Nuclear Center Sarov Russia

Saha Institute of Nuclear Physics Homi Bhabha National Institute Kolkata India

School of Physics and Astronomy University of Birmingham Birmingham United Kingdom

Sección Física Departamento de Ciencias Pontificia Universidad Católica del Perú Lima Peru

Sezione INFN Bari Italy

Sezione INFN Bologna Italy

Sezione INFN Cagliari Italy

Sezione INFN Catania Italy

Sezione INFN Padova Italy

Sezione INFN Rome Italy

Sezione INFN Trieste Italy

Sezione INFN Turin Italy

St Petersburg State University St Petersburg Russia

Stefan Meyer Institut für Subatomare Physik Vienna Austria

SUBATECH IMT Atlantique Université de Nantes CNRS IN2P3 Nantes France

Suranaree University of Technology Nakhon Ratchasima Thailand

Technical University of Košice Košice Slovakia

The Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences Cracow Poland

The University of Texas at Austin Texas USA

Universidad Autónoma de Sinaloa Culiacán Mexico

Universidade de São Paulo São Paulo Brazil

Universidade Estadual de Campinas Campinas Brazil

Universidade Federal do ABC Santo Andre Brazil

Università degli Studi di Foggia Foggia Italy

Università degli Studi di Pavia Pavia Italy

Università di Brescia Brescia Italy

Université Clermont Auvergne CNRS IN2P3 LPC Clermont Ferrand France

Université de Lyon Université Lyon 1 CNRS IN2P3 IPN Lyon Villeurbanne Lyon France

Université de Strasbourg CNRS IPHC UMR 7178 F 67000 Strasbourg France Strasbourg France

Université Paris Saclay Centre d'Etudes de Saclay Saclay France

University of Cape Town Cape Town South Africa

University of Houston Houston Texas USA

University of Jyväskylä Jyväskylä Finland

University of Liverpool Liverpool United Kingdom

University of Science and Technology of China Hefei China

University of South Eastern Norway Tonsberg Norway

University of Tennessee Tennessee USA

University of the Witwatersrand Johannesburg South Africa

University of Tokyo Tokyo Japan

University of Tsukuba Tsukuba Japan

Variable Energy Cyclotron Centre Homi Bhabha National Institute Kolkata India

Warsaw University of Technology Warsaw Poland

Wayne State University Michigan USA

Westfälische Wilhelms Universität Münster Institut für Kernphysik Münster Germany

Wigner Research Centre for Physics Budapest Hungary

Yale University Connecticut USA

Yonsei University Seoul Republic of Korea

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