Journal
PHYSICS LETTERS B
Volume 758, Issue -, Pages 389-401Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2016.05.027
Keywords
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Funding
- Grid centres
- Worldwide LHC Computing Grid (WLCG)
- State Committee of Science
- World Federation of Scientists (WFS)
- Swiss Fonds Kidagan, Armenia
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
- Financiadora de Estudos e Projetos (FINEP)
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP)
- National Natural Science Foundation of China (NSFC)
- Chinese Ministry of Education (CMOE)
- Ministry of Science and Technology of China (MSTC)
- Ministry of Education and Youth of the Czech Republic
- Danish Natural Science Research Council
- Carlsberg Foundation
- Danish National Research Foundation
- European Research Council under the European Community
- Helsinki Institute of Physics
- Academy of Finland
- French CNRS-IN2P3
- Region Pays de Loire
- Region Alsace
- Region Auvergne
- CEA, France
- German Bundesministerium fur Bildung, Wissenschaft, Forschung and Technologie (BMBF)
- Helmholtz Association
- General Secretariat for Research and Technology, Ministry of Development, Greece
- National Research, Development and Innovation Office (NKFIH), Hungary
- Department of Atomic Energy and Department of Science and Technology of the Government of India
- Istituto Nazionale di Fisica Nucleare (INFN)
- Centro Fermi - Museo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi, Italy
- Japan Society for the Promotion of Science (JSPS) KAKENHI
- MEXT, Japan
- Joint Institute for Nuclear Research, Dubna
- National Research Foundation of Korea (NRF)
- Consejo Nacional de Cienca y Tecnologia (CONACYT)
- Direction General de Asuntos del Personal Academico (DGAPA), Mexico
- Amerique Latine Formation academique - European Commission (ALFA-EC)
- EPLANET Program (European Particle Physics Latin American Network)
- Stichting voor Fundamenteel Onderzoek der Materie (FOM)
- Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO), Netherlands
- Research Council of Norway (NFR)
- National Science Centre, Poland
- Ministry of National Education/Institute for Atomic Physics
- National Council of Scientific Research in Higher Education (CNCSI-UEFISCDI), Romania
- Ministry of Education and Science of Russian Federation
- Russian Academy of Sciences
- Russian Federal Agency of Atomic Energy
- Russian Federal Agency for Science and Innovation
- Russian Foundation for Basic Research
- Ministry of Education of Slovakia
- Department of Science and Technology, Republic of South Africa, South Africa
- Centro de Investigaciones Energeticas, Medioambientales y Tecnologicas (CIEMAT)
- E-Infrastructure shared between Europe and Latin America (EELA)
- Ministerio de Economia y Competitividad (MINECO) of Spain
- Xunta de Galicia (Conselleria de Education)
- Centro de Aplicaciones Tecnologicas y Desarrollo Nuclear (CEADEN)
- Cubaenergia
- Cuba
- IAEA (International Atomic Energy Agency)
- Swedish Research Council (VR)
- Knut AMP
- Alice Wallenberg Foundation (KAW)
- Ukraine Ministry of Education and Science
- United Kingdom Science and Technology Facilities Council (STFC)
- United States Department of Energy
- United States National Science Foundation
- State of Texas
- State of Ohio
- Ministry of Science, Education and Sports of Croatia
- Unity through Knowledge Fund, Croatia
- Council of Scientific and Industrial Research (CSIR), New Delhi, India
- Pontificia Universidad Catolica del Peru
- Grants-in-Aid for Scientific Research [26610071, 25287048, 15H03664] Funding Source: KAKEN
- Science and Technology Facilities Council [ST/M00158X/1, ST/J000108/1, ST/L005751/1, 2014 STFC Nuclear Physics CG, 1521430, ST/M001601/1, GRIDPP, ST/M00340X/1, ST/N00261X/1, ST/M001598/1, ST/L005670/1, ALICE, 1523365] Funding Source: researchfish
- STFC [2014 STFC Nuclear Physics CG, ST/M00158X/1, ST/M00340X/1, ST/M001598/1, ST/L005670/1, ALICE, ST/M001601/1, ST/J000108/1, ST/N00261X/1, ST/L005751/1] Funding Source: UKRI
- Direct For Mathematical & Physical Scien
- Division Of Physics [1407051, 1305280, 1307461] Funding Source: National Science Foundation
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The multi-strange baryon yields in Pb-Pb collisions have been shown to exhibit an enhancement relative to pp reactions. In this work, Xi and Omega production rates have been measured with the ALICE experiment as a function of transverse momentum, p(T), in p-Pb collisions at a centre-of-mass energy of,/sNN = 5.02 TeV. The results cover the kinematic ranges 0.6 GeV/c < p(T) < 7.2 GeV/c and 0.8 GeV/c < p(T) < 5 GeV/c, for E and S-2 respectively, in the common rapidity interval 0.5 < ycms < 0. Multi -strange baryons have been identified by reconstructing their weak decays into charged particles. The p(T) spectra are analysed as a function of event charged -particle multiplicity, which in p-Pb collisions ranges over one order of magnitude and lies between those observed in pp and Pb-Pb collisions. The measured p -r distributions are compared to the expectations from a Blast -Wave model. The parameters which describe the production of lighter hadron species also describe the hyperon spectra in high multiplicity p-Pb collisions. The yield of hyperons relative to charged pions is studied and compared with results from pp and Pb-Pb collisions. A continuous increase in the yield ratios as a function of multiplicity is observed in p-Pb data, the values of which range from those measured in minimum bias pp to the ones in Pb-Pb collisions. A statistical model qualitatively describes this multiplicity dependence using a canonical suppression mechanism, in which the small volume causes a relative reduction of hadron production dependent on the strangeness content of the hyperon. (C) 2016 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http/creativecommons,org/licenses/by/4.0). Funded by SCOAP(3).
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