Journal
PHYSICAL REVIEW C
Volume 99, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.99.024001
Keywords
-
Categories
Funding
- A. I. Alikhanyan National Science Laboratory (Yerevan Physics Institute) Foundation (ANSL), Armenia
- State Committee of Science, Armenia
- World Federation of Scientists (WFS), Armenia
- Austrian Academy of Sciences, Austria
- Nationalstiftung fur Forschung, Technologie und Entwicklung, Austria
- Ministry of Communications and High Technologies, National Nuclear Research Center, Azerbaijan
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq), Brazil
- Universidade Federal do Rio Grande do Sul (UFRGS), Brazil
- Financiadora de Estudos e Projetos (Finep), Brazil
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP), Brazil
- Ministry of Science & Technology of China (MSTC), China
- National Natural Science Foundation of China (NSFC), China
- Ministry of Education of China (MOEC), China
- Ministry of Science and Education, Croatia
- Ministry of Education, Youth and Sports of the Czech Republic, Czech Republic
- Danish Council for Independent Research \ Natural Sciences, the Carlsberg Foundation, Denmark
- Danish National Research Foundation (DNRF), Denmark
- Helsinki Institute of Physics (HIP), Finland
- Commissariat a l'Energie Atomique (CEA), France
- Institut National de Physique Nucleaire et de Physique des Particules (IN2P3), France
- Centre National de la Recherche Scientifique (CNRS), France
- Bundesministerium fur Bildung, Wissenschaft, Forschung und Technologie (BMBF), Germany
- GSI Helmholtzzentrum fur Schwerionenforschung GmbH, Germany
- General Secretariat for Research and Technology, Ministry of Education, Research and Religions, Greece
- National Research, Development and Innovation Office, Hungary
- Department of Atomic Energy Government of India (DAE), India
- Department of Science and Technology, Government of India (DST), India
- University Grants Commission, Government of India (UGC), India
- Council of Scientific and Industrial Research (CSIR), India
- Indonesian Institute of Science, Indonesia
- Centro Fermi - Museo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi, Italy
- Istituto Nazionale di Fisica Nucleare (INFN), Italy
- Institute for Innovative Science and Technology, Nagasaki Institute of Applied Science (IIST), Japan
- Japan Society for the Promotion of Science (JSPS) KAKENHI, Japan
- Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan
- Consejo Nacional de Ciencia (CONACYT) y Tecnologia, through Fondo de Cooperacion Internacional en Ciencia y Tecnologia (FONCICYT), Mexico
- Direccion General de Asuntos del Personal Academico (DGAPA), Mexico
- Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO), Netherlands
- Research Council of Norway, Norway
- Commission on Science and Technology for Sustainable Development in the South (COMSATS), Pakistan
- Pontificia Universidad Catolica del Peru, Peru
- Ministry of Science and Higher Education and National Science Centre, Poland
- Korea Institute of Science and Technology Information, Republic of Korea
- National Research Foundation of Korea (NRF), Republic of Korea
- Ministry of Education and Scientific Research, Romania
- Institute of Atomic Physics, Romania
- Romanian National Agency for Science, Technology and Innovation, Romania
- Joint Institute for Nuclear Research (JINR), Russia
- Ministry of Education and Science of the Russian Federation, Russia
- National Research Centre Kurchatov Institute, Russia
- Ministry of Education, Science, Research and Sport of the Slovak Republic, Slovakia
- National Research Foundation of South Africa, South Africa
- Centro de Aplicaciones Tecnologicas y Desarrollo Nuclear (CEADEN), Spain
- Cubaenergia, Cuba, Spain
- Centro de Investigaciones Energeticas, Medioambientales y Tecnologicas (CIEMAT), Spain
- Swedish Research Council (VR), Sweden
- Knut & Alice Wallenberg Foundation (KAW), Sweden
- European Organization for Nuclear Research, Switzerland
- National Science and Technology Development Agency (NSDTA), Thailand
- Suranaree University of Technology (SUT), Thailand
- Office of the Higher Education Commission under NRU project of Thailand, Thailand
- Turkish Atomic Energy Agency (TAEK), Turkey
- National Academy of Sciences of Ukraine, Ukraine
- Science and Technology Facilities Council (STFC), United Kingdom
- National Science Foundation of the United States of America (NSF), United States of America
- United States Department of Energy, Office of Nuclear Physics (DOE NP), United States of America
- Worldwide LHC Computing Grid (WLCG) collaboration
- STFC [ST/N00261X/1, ST/L005751/1, ALICE, ST/L005670/1, ST/P004199/1, ST/M001598/1, ST/P005438/1, ST/M00340X/1, ST/P005047/1, ST/M00158X/1, 1657698, 1963192, 1796881, ST/P004598/1, 1843572, 2017 STFC Nuclear Physics CG, ST/J000108/1, ST/M001601/1] Funding Source: UKRI
- Science and Technology Facilities Council [1843572, ST/P004598/1, 2017 STFC Nuclear Physics CG, 1796881, ST/L005670/1, ST/P005438/1, ST/M001598/1] Funding Source: researchfish
Ask authors/readers for more resources
We report on the first femtoscopic measurement of baryon pairs, such as p-p, p-Lambda, and Lambda-Lambda, measured by ALICE at the Large Hadron Collider (LHC) in proton-proton collisions at root s = 7 TeV. This study demonstrates the feasibility of such measurements in pp collisions at ultrarelativistic energies. The femtoscopy method is employed to constrain the hyperon-nucleon and hyperon-hyperon interactions, which are still rather poorly understood. A new method to evaluate the influence of residual correlations induced by the decays of resonances and experimental impurities is hereby presented. The p-p, p-Lambda, and Lambda-Lambda correlation functions were fitted simultaneously with the help of a new tool developed specifically for the femtoscopy analysis in small colliding systems: Correlation Analysis Tool using the Schrodinger equation (CATS). Within the assumption that in pp collisions the three particle pairs originate from a common source, its radius is found to be equal to r(0) = 1.125 +/- 0.018 (stat)(-0.035)(+0.058) (syst) fm. The sensitivity of the measured p-Lambda correlation is tested against different scattering parameters, which are defined by the interaction among the two particles, but the statistics is not sufficient yet to discriminate among different models. The measurement of the Lambda-Lambda correlation function constrains the phase space spanned by the effective range and scattering length of the strong interaction. Discrepancies between the measured scattering parameters and the resulting correlation functions at LHC and RHIC energies are discussed in the context of various models.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available