Scattering Studies with Low-Energy Kaon-Proton Femtoscopy in Proton-Proton Collisions at the LHC

(A Large Ion Collider Experiment Collaboration)

doi:10.1103/PhysRevLett.124.092301

Scattering Studies with Low-Energy Kaon-Proton Femtoscopy in Proton-Proton Collisions at the LHC

(A Large Ion Collider Experiment Collaboration)

Relativistic Nuclear Physics

Research output: Contribution to journal › Article › peer-review

51 Scopus citations

Abstract

The study of the strength and behavior of the antikaon-nucleon (K̄N) interaction constitutes one of the key focuses of the strangeness sector in low-energy quantum chromodynamics (QCD). In this Letter a unique high-precision measurement of the strong interaction between kaons and protons, close and above the kinematic threshold, is presented. The femtoscopic measurements of the correlation function at low pair-frame relative momentum of (K+pâŠ•K-p) and (K-pâŠ•K+p) pairs measured in pp collisions at s=5, 7, and 13 TeV are reported. A structure observed around a relative momentum of 58 MeV/c in the measured correlation function of (K-pâŠ•K+p) with a significance of 4.4σ constitutes the first experimental evidence for the opening of the (K̄0n.K0n) isospin breaking channel due to the mass difference between charged and neutral kaons. The measured correlation functions have been compared to Jülich and Kyoto models in addition to the Coulomb potential. The high-precision data at low relative momenta presented in this work prove femtoscopy to be a powerful complementary tool to scattering experiments and provide new constraints above the K̄N threshold for low-energy QCD chiral models.

Original language	English
Article number	092301
Journal	Physical Review Letters
Volume	124
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevLett.124.092301
State	Published - Mar 6 2020

Funding

The ALICE Collaboration is grateful to Professor Tetsuo Hyodo and Professor Johann Haidenbauer for the valuable suggestions and discussions. The ALICE Collaboration would like to thank all its engineers and technicians for their invaluable contributions to the construction of the experiment and the CERN accelerator teams for the outstanding performance of the LHC complex. The ALICE Collaboration gratefully acknowledges the resources and support provided by all Grid centres and the Worldwide LHC Computing Grid (WLCG) Collaboration. The ALICE Collaboration acknowledges the following funding agencies for their support in building and running the ALICE detector: the A.\u2009I. Alikhanyan National Science Laboratory (Yerevan Physics Institute) Foundation (ANSL) and the State Committee of Science and World Federation of Scientists (WFS), Armenia; the Austrian Academy of Sciences, Austrian Science Fund (FWF): [M 2467-N36] and Nationalstiftung f\u00FCr Forschung, Technologie und Entwicklung, Austria; the Ministry of Communications and High Technologies, National Nuclear Research Center, Azerbaijan; the Conselho Nacional de Desenvolvimento Cient\u00EDfico e Tecnol\u00F3gico (CNPq), Universidade Federal do Rio Grande do Sul (UFRGS), Financiadora de Estudos e Projetos (Finep) and Funda\u00E7\u00E3o de Amparo \u00E0 Pesquisa do Estado de S\u00E3o Paulo (FAPESP), Brazil; the Ministry of Science & Technology of China (MSTC), the National Natural Science Foundation of China (NSFC), and the Ministry of Education of China (MOEC), China; the Croatian Science Foundation and Ministry of Science and Education, Croatia; the Centro de Aplicaciones Tecnol\u00F3gicas y Desarrollo Nuclear (CEADEN), Cubaenerg\u00EDa, Cuba; the Ministry of Education, Youth and Sports of the Czech Republic, Czech Republic; The Danish Council for Independent Research | Natural Sciences, the Carlsberg Foundation and the Danish National Research Foundation (DNRF), Denmark; the Helsinki Institute of Physics (HIP), Finland; the Commissariat \u00E0 l\u2019Energie Atomique (CEA), the Institut National de Physique Nucl\u00E9aire et de Physique des Particules (IN2P3), and the Centre National de la Recherche Scientifique (CNRS) and R\u00E9gion des Pays de la Loire, France; Bundesministerium f\u00FCr Bildung und Forschung (BMBF) and GSI Helmholtzzentrum f\u00FCr Schwerionenforschung GmbH, Germany; the General Secretariat for Research and Technology, Ministry of Education, Research and Religions, Greece; the National Research, Development and Innovation Office, Hungary; the Department of Atomic Energy Government of India (DAE), the Department of Science and Technology, Government of India (DST), University Grants Commission, Government of India (UGC), and the Council of Scientific and Industrial Research (CSIR), India; the Indonesian Institute of Science, Indonesia; Centro Fermi\u2014Museo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi and Istituto Nazionale di Fisica Nucleare (INFN), Italy; the Institute for Innovative Science and Technology, the Nagasaki Institute of Applied Science (IIST), Japan Society for the Promotion of Science (JSPS) KAKENHI, and the Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan; Consejo Nacional de Ciencia (CONACYT) y Tecnolog\u00EDa, through Fondo de Cooperaci\u00F3n Internacional en Ciencia y Tecnolog\u00EDa (FONCICYT) and Direcci\u00F3n General de Asuntos del Personal Academico (DGAPA), Mexico; Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO), Netherlands; The Research Council of Norway, Norway; Commission on Science and Technology for Sustainable Development in the South (COMSATS), Pakistan; Pontificia Universidad Cat\u00F3lica del Per\u00FA, Peru; the Ministry of Science and Higher Education and National Science Centre, Poland; Korea Institute of Science and Technology Information and National Research Foundation of Korea (NRF), Republic of Korea; the Ministry of Education and Scientific Research, Institute of Atomic Physics and the Ministry of Research and Innovation and Institute of Atomic Physics, Romania; the Joint Institute for Nuclear Research (JINR), the Ministry of Education and Science of the Russian Federation, the National Research Centre Kurchatov Institute, the Russian Science Foundation and Russian Foundation for Basic Research, Russia; the Ministry of Education, Science, Research and Sport of the Slovak Republic, Slovakia; the National Research Foundation of South Africa, South Africa; the Swedish Research Council (VR) and the Knut & Alice Wallenberg Foundation (KAW), Sweden; the European Organization for Nuclear Research, Switzerland; the National Science and Technology Development Agency (NSDTA), Suranaree University of Technology (SUT), and Office of the Higher Education Commission under NRU project of Thailand, Thailand; the Turkish Atomic Energy Agency (TAEK), Turkey; the National Academy of Sciences of Ukraine, Ukraine; the Science and Technology Facilities Council (STFC), United Kingdom; and the National Science Foundation of the United States of America (NSF) and the United States Department of Energy, Office of Nuclear Physics (DOE NP), United States of America.

Funders	Funder number
Council of Scientific and Industrial Research, India
State Committee of Science and World Federation
Nagasaki Institute of Applied Science
Ministry of Communications and High Technologies
Department of Atomic Energy, Government of India
National Academy of Sciences of Ukraine
National Science and Technology Development Agency
National Research Foundation of Korea
Ministry of Education of the People's Republic of China
Narodowe Centrum Nauki
University Grants Commission
Institut National de Physique Nucléaire et de Physique des Particules
Ministerul Cercetării şi Inovării
Conseil Régional des Pays de la Loire
General Secretariat for Research and Technology, Ministry of Education, Research and Religions
Institute for Innovative Science and Technology, Nagasaki Institute of Applied Science
Ministry of Education and Science
Nederlandse Organisatie voor Wetenschappelijk Onderzoek
Turkish Atomic Energy Agency
Korea Institute of Science and Technology Information
Knut och Alice Wallenbergs Stiftelse
Instituto Nazionale di Fisica Nucleare
Centro Fermi—Museo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi and Istituto Nazionale di Fisica Nucleare
Financiadora de Estudos e Projetos
Department of Science and Technology, Ministry of Science and Technology, India
Consejo Nacional de Ciencia y Tecnología
Helsinki Institute of Physics
Türkiye Atom Enerjisi Kurumu
Norges Forskningsråd
Yerevan Physics Institute
Natur og Univers, Det Frie Forskningsråd
Centre National de la Recherche Scientifique
Office of the Higher Education Commission
Dirección General de Asuntos del Personal Académico, Universidad Nacional Autónoma de México
Bundesministerium für Bildung und Forschung
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
Danmarks Grundforskningsfond
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Suranaree University of Technology
Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear
Nemzeti Kutatási Fejlesztési és Innovációs Hivatal
Russian Foundation for Basic Research
NRU
GSI Helmholtzzentrum für Schwerionenforschung
U.S. Department of Energy
Ministry of Education and Science of the Russian Federation
Carlsbergfondet
Indian Institute of Space Science and Technology
Fundação de Amparo à Pesquisa do Estado de São Paulo
National Nuclear Research Center
National Research Center "Kurchatov Institute"
Institutul de Fizică Atomică
Ministry of Science and Technology of the People's Republic of China
Ministry of Education, Youth and Sports of the Czech Republic, Czech Republic
Ministry of Education, Science, Research and Sport
Russian Science Foundation
Fondo de Cooperación Internacional en Ciencia y Tecnología
Universidade Federal do Rio Grande do Sul
Österreichischen Akademie der Wissenschaften
Indonesian Institute of Science, Indonesia
University Grants Commission, Government of India
National Research Foundation
Ministerstwo Edukacji i Nauki
Ministry of Higher Education and Scientific Research
CERN
Joint Institute for Nuclear Research
Nuclear Physics
Vetenskapsrådet
Hrvatska Zaklada za Znanost
Österreichische Nationalstiftung für Forschung, Technologie und Entwicklung
Ministry of Education, Culture, Sports, Science and Technology
National Natural Science Foundation of China
Science and Technology Facilities Council	ST/N00261X/1, ALICE, ST/M00340X/1, GRIDPP, ST/M00158X/1, ST/P004199/1
Science and Technology Facilities Council
National Science Foundation	1719759
National Science Foundation
Japan Society for the Promotion of Science	17H02903, 19K03887
Japan Society for the Promotion of Science
Austrian Science Fund	M 2467-N36
Austrian Science Fund

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10.1103/PhysRevLett.124.092301

Cite this

@article{651665ea50b74539891a1d85c4fe7c54,

title = "Scattering Studies with Low-Energy Kaon-Proton Femtoscopy in Proton-Proton Collisions at the LHC",

abstract = "The study of the strength and behavior of the antikaon-nucleon ({\=K}N) interaction constitutes one of the key focuses of the strangeness sector in low-energy quantum chromodynamics (QCD). In this Letter a unique high-precision measurement of the strong interaction between kaons and protons, close and above the kinematic threshold, is presented. The femtoscopic measurements of the correlation function at low pair-frame relative momentum of (K+p{\^a}{\v S}•K-p) and (K-p{\^a}{\v S}•K+p) pairs measured in pp collisions at s=5, 7, and 13 TeV are reported. A structure observed around a relative momentum of 58 MeV/c in the measured correlation function of (K-p{\^a}{\v S}•K+p) with a significance of 4.4σ constitutes the first experimental evidence for the opening of the ({\=K}0n.K0n) isospin breaking channel due to the mass difference between charged and neutral kaons. The measured correlation functions have been compared to J{\"u}lich and Kyoto models in addition to the Coulomb potential. The high-precision data at low relative momenta presented in this work prove femtoscopy to be a powerful complementary tool to scattering experiments and provide new constraints above the {\=K}N threshold for low-energy QCD chiral models.",

author = "{(A Large Ion Collider Experiment Collaboration)} and S. Acharya and D. Adamov{\'a} and Adhya, {S. P.} and A. Adler and J. Adolfsson and Aggarwal, {M. M.} and {Aglieri Rinella}, G. and M. Agnello and N. Agrawal and Z. Ahammed and S. Ahmad and Ahn, {S. U.} and S. Aiola and A. Akindinov and M. Al-Turany and Alam, {S. N.} and Albuquerque, {D. S.D.} and D. Aleksandrov and B. Alessandro and Alfanda, {H. M.} and {Alfaro Molina}, R. and B. Ali and Y. Ali and A. Alici and A. Alkin and J. Alme and T. Alt and L. Altenkamper and I. Altsybeev and Anaam, {M. N.} and C. Andrei and D. Andreou and Andrews, {H. A.} and A. Andronic and M. Angeletti and V. Anguelov and C. Anson and T. Anti{\v c}i{\'c} and F. Antinori and P. Antonioli and R. Anwar and N. Apadula and L. Aphecetche and H. Appelsha{\"u}ser and S. Arcelli and R. Arnaldi and M. Arratia and F. Bock and Read, {K. F.} and Schmidt, {N. V.}",

note = "Publisher Copyright: {\textcopyright} 2020 CERN.",

year = "2020",

month = mar,

day = "6",

doi = "10.1103/PhysRevLett.124.092301",

language = "English",

volume = "124",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "9",

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TY - JOUR

T1 - Scattering Studies with Low-Energy Kaon-Proton Femtoscopy in Proton-Proton Collisions at the LHC

AU - (A Large Ion Collider Experiment Collaboration)

AU - Acharya, S.

AU - Adamová, D.

AU - Adhya, S. P.

AU - Adler, A.

AU - Adolfsson, J.

AU - Aggarwal, M. M.

AU - Aglieri Rinella, G.

AU - Agnello, M.

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Ahmad, S.

AU - Ahn, S. U.

AU - Aiola, S.

AU - Akindinov, A.

AU - Al-Turany, M.

AU - Alam, S. N.

AU - Albuquerque, D. S.D.

AU - Aleksandrov, D.

AU - Alessandro, B.

AU - Alfanda, H. M.

AU - Alfaro Molina, R.

AU - Ali, B.

AU - Ali, Y.

AU - Alici, A.

AU - Alkin, A.

AU - Alme, J.

AU - Alt, T.

AU - Altenkamper, L.

AU - Altsybeev, I.

AU - Anaam, M. N.

AU - Andrei, C.

AU - Andreou, D.

AU - Andrews, H. A.

AU - Andronic, A.

AU - Angeletti, M.

AU - Anguelov, V.

AU - Anson, C.

AU - Antičić, T.

AU - Antinori, F.

AU - Antonioli, P.

AU - Anwar, R.

AU - Apadula, N.

AU - Aphecetche, L.

AU - Appelshaüser, H.

AU - Arcelli, S.

AU - Arnaldi, R.

AU - Arratia, M.

AU - Bock, F.

AU - Read, K. F.

AU - Schmidt, N. V.

PY - 2020/3/6

Y1 - 2020/3/6

N2 - The study of the strength and behavior of the antikaon-nucleon (K̄N) interaction constitutes one of the key focuses of the strangeness sector in low-energy quantum chromodynamics (QCD). In this Letter a unique high-precision measurement of the strong interaction between kaons and protons, close and above the kinematic threshold, is presented. The femtoscopic measurements of the correlation function at low pair-frame relative momentum of (K+pâŠ•K-p) and (K-pâŠ•K+p) pairs measured in pp collisions at s=5, 7, and 13 TeV are reported. A structure observed around a relative momentum of 58 MeV/c in the measured correlation function of (K-pâŠ•K+p) with a significance of 4.4σ constitutes the first experimental evidence for the opening of the (K̄0n.K0n) isospin breaking channel due to the mass difference between charged and neutral kaons. The measured correlation functions have been compared to Jülich and Kyoto models in addition to the Coulomb potential. The high-precision data at low relative momenta presented in this work prove femtoscopy to be a powerful complementary tool to scattering experiments and provide new constraints above the K̄N threshold for low-energy QCD chiral models.

AB - The study of the strength and behavior of the antikaon-nucleon (K̄N) interaction constitutes one of the key focuses of the strangeness sector in low-energy quantum chromodynamics (QCD). In this Letter a unique high-precision measurement of the strong interaction between kaons and protons, close and above the kinematic threshold, is presented. The femtoscopic measurements of the correlation function at low pair-frame relative momentum of (K+pâŠ•K-p) and (K-pâŠ•K+p) pairs measured in pp collisions at s=5, 7, and 13 TeV are reported. A structure observed around a relative momentum of 58 MeV/c in the measured correlation function of (K-pâŠ•K+p) with a significance of 4.4σ constitutes the first experimental evidence for the opening of the (K̄0n.K0n) isospin breaking channel due to the mass difference between charged and neutral kaons. The measured correlation functions have been compared to Jülich and Kyoto models in addition to the Coulomb potential. The high-precision data at low relative momenta presented in this work prove femtoscopy to be a powerful complementary tool to scattering experiments and provide new constraints above the K̄N threshold for low-energy QCD chiral models.

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DO - 10.1103/PhysRevLett.124.092301

M3 - Article

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AN - SCOPUS:85082380767

SN - 0031-9007

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JO - Physical Review Letters

JF - Physical Review Letters

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M1 - 092301

ER -

Scattering Studies with Low-Energy Kaon-Proton Femtoscopy in Proton-Proton Collisions at the LHC

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