KS0KS0 and KS0K± femtoscopy in pp collisions at s=5.02 and 13 TeV

ALICE Collaboration

doi:10.1016/j.physletb.2022.137335

K_S⁰K_S⁰ and K_S⁰K^± femtoscopy in pp collisions at s=5.02 and 13 TeV

ALICE Collaboration

CERN
Variable Energy Cyclotron Centre
Czech Academy of Sciences
Goethe University Frankfurt
Lund University
National Institute for Nuclear Physics
Aligarh Muslim University
Korea Institute of Science and Technology Information
Pavol Jozef Šafárik University
Indonesian Institute of Sciences
Russian Research Centre Kurchatov Institute
GSI Helmholtz Centre for Heavy Ion Research
Central China Normal University
Universidad Nacional Autónoma de México
COMSATS University Islamabad
University of Houston
University of Bergen
St. Petersburg State University
Horia Hulubei National Institute of Physics and Nuclear Engineering
National Institute for Subatomic Physics
University of Münster
Heidelberg University
Lawrence Berkeley National Laboratory
Nantes Université
University of Oslo
Yale University
Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
Pusan National University
Inha University

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

24 Scopus citations

Abstract

Femtoscopic correlations with the particle pair combinations K_S⁰K_S⁰ and K_S⁰K^± are studied in pp collisions at s=5.02 and 13 TeV by the ALICE experiment. At both energies, boson source parameters are extracted for both pair combinations, by fitting models based on Gaussian size distributions of the sources, to the measured two-particle correlation functions. The interaction model used for the K_S⁰K_S⁰ analysis includes quantum statistics and strong final-state interactions through the f₀(980) and a₀(980) resonances. The model used for the K_S⁰K^± analysis includes only the final-state interaction through the a₀ resonance. Source parameters extracted in the present work are compared with published values from pp collisions at s=7 TeV and the different pair combinations are found to be consistent. From the observation that the strength of the K_S⁰K_S⁰ correlations is significantly greater than the strength of the K_S⁰K^± correlations, the new results are compatible with the a₀ resonance being a tetraquark state of the form (q₁,q₂‾,s,s‾), where q₁ and q₂ are u or d quarks.

Original language	English
Article number	137335
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	833
DOIs	https://doi.org/10.1016/j.physletb.2022.137335
State	Published - 10 Oct 2022
Externally published	Yes

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10.1016/j.physletb.2022.137335

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@article{fdaae7e7db1649af8cc8e84b0d1a43ee,

title = "KS0KS0 and KS0K± femtoscopy in pp collisions at s=5.02 and 13 TeV",

abstract = "Femtoscopic correlations with the particle pair combinations KS0KS0 and KS0K± are studied in pp collisions at s=5.02 and 13 TeV by the ALICE experiment. At both energies, boson source parameters are extracted for both pair combinations, by fitting models based on Gaussian size distributions of the sources, to the measured two-particle correlation functions. The interaction model used for the KS0KS0 analysis includes quantum statistics and strong final-state interactions through the f0(980) and a0(980) resonances. The model used for the KS0K± analysis includes only the final-state interaction through the a0 resonance. Source parameters extracted in the present work are compared with published values from pp collisions at s=7 TeV and the different pair combinations are found to be consistent. From the observation that the strength of the KS0KS0 correlations is significantly greater than the strength of the KS0K± correlations, the new results are compatible with the a0 resonance being a tetraquark state of the form (q1,q2‾,s,s‾), where q1 and q2 are u or d quarks.",

author = "\{ALICE Collaboration\} and S. Acharya and D. Adamov{\'a} and A. Adler and J. Adolfsson and \{Aglieri Rinella\}, G. and M. Agnello and N. Agrawal and Z. Ahammed and S. Ahmad and Ahn, \{S. U.\} and I. Ahuja and Z. Akbar and A. Akindinov and M. Al-Turany and Alam, \{S. N.\} and D. Aleksandrov and B. Alessandro and Alfanda, \{H. M.\} and \{Alfaro Molina\}, R. and B. Ali and Y. Ali and A. Alici and N. Alizadehvandchali and A. Alkin and J. Alme and G. Alocco and T. Alt and I. Altsybeev and Anaam, \{M. N.\} and C. Andrei and D. Andreou and A. Andronic and M. Angeletti and V. Anguelov and F. Antinori and P. Antonioli and C. Anuj and N. Apadula and L. Aphecetche and H. Appelsh{\"a}user and S. Arcelli and R. Arnaldi and Arsene, \{I. C.\} and M. Arslandok and A. Augustinus and R. Averbeck and S. Aziz and Azmi, \{M. D.\} and A. Badal{\`a} and B. Kim",

note = "Publisher Copyright: {\textcopyright} 2022 European Organization for Nuclear Research, ALICE",

year = "2022",

month = oct,

day = "10",

doi = "10.1016/j.physletb.2022.137335",

language = "English",

volume = "833",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - KS0KS0 and KS0K± femtoscopy in pp collisions at s=5.02 and 13 TeV

AU - ALICE Collaboration

AU - Acharya, S.

AU - Adamová, D.

AU - Adler, A.

AU - Adolfsson, J.

AU - Aglieri Rinella, G.

AU - Agnello, M.

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Ahmad, S.

AU - Ahn, S. U.

AU - Ahuja, I.

AU - Akbar, Z.

AU - Akindinov, A.

AU - Al-Turany, M.

AU - Alam, S. N.

AU - Aleksandrov, D.

AU - Alessandro, B.

AU - Alfanda, H. M.

AU - Alfaro Molina, R.

AU - Ali, B.

AU - Ali, Y.

AU - Alici, A.

AU - Alizadehvandchali, N.

AU - Alkin, A.

AU - Alme, J.

AU - Alocco, G.

AU - Alt, T.

AU - Altsybeev, I.

AU - Anaam, M. N.

AU - Andrei, C.

AU - Andreou, D.

AU - Andronic, A.

AU - Angeletti, M.

AU - Anguelov, V.

AU - Antinori, F.

AU - Antonioli, P.

AU - Anuj, C.

AU - Apadula, N.

AU - Aphecetche, L.

AU - Appelshäuser, H.

AU - Arcelli, S.

AU - Arnaldi, R.

AU - Arsene, I. C.

AU - Arslandok, M.

AU - Augustinus, A.

AU - Averbeck, R.

AU - Aziz, S.

AU - Azmi, M. D.

AU - Badalà, A.

AU - Kim, B.

PY - 2022/10/10

Y1 - 2022/10/10

N2 - Femtoscopic correlations with the particle pair combinations KS0KS0 and KS0K± are studied in pp collisions at s=5.02 and 13 TeV by the ALICE experiment. At both energies, boson source parameters are extracted for both pair combinations, by fitting models based on Gaussian size distributions of the sources, to the measured two-particle correlation functions. The interaction model used for the KS0KS0 analysis includes quantum statistics and strong final-state interactions through the f0(980) and a0(980) resonances. The model used for the KS0K± analysis includes only the final-state interaction through the a0 resonance. Source parameters extracted in the present work are compared with published values from pp collisions at s=7 TeV and the different pair combinations are found to be consistent. From the observation that the strength of the KS0KS0 correlations is significantly greater than the strength of the KS0K± correlations, the new results are compatible with the a0 resonance being a tetraquark state of the form (q1,q2‾,s,s‾), where q1 and q2 are u or d quarks.

AB - Femtoscopic correlations with the particle pair combinations KS0KS0 and KS0K± are studied in pp collisions at s=5.02 and 13 TeV by the ALICE experiment. At both energies, boson source parameters are extracted for both pair combinations, by fitting models based on Gaussian size distributions of the sources, to the measured two-particle correlation functions. The interaction model used for the KS0KS0 analysis includes quantum statistics and strong final-state interactions through the f0(980) and a0(980) resonances. The model used for the KS0K± analysis includes only the final-state interaction through the a0 resonance. Source parameters extracted in the present work are compared with published values from pp collisions at s=7 TeV and the different pair combinations are found to be consistent. From the observation that the strength of the KS0KS0 correlations is significantly greater than the strength of the KS0K± correlations, the new results are compatible with the a0 resonance being a tetraquark state of the form (q1,q2‾,s,s‾), where q1 and q2 are u or d quarks.

UR - https://www.scopus.com/pages/publications/85135702560

U2 - 10.1016/j.physletb.2022.137335

DO - 10.1016/j.physletb.2022.137335

M3 - Article

AN - SCOPUS:85135702560

SN - 0370-2693

VL - 833

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

M1 - 137335

ER -

K_S⁰K_S⁰ and K_S⁰K^± femtoscopy in pp collisions at s=5.02 and 13 TeV

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