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



Acharya, S, Adamova, D, Adler, A, Adolfsson, J, Rinella, G Aglieri, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU
et al (show 1004 more authors) (2022) KS0KS0 and KS0K± femtoscopy in pp collisions at √s=5.02and 13 TeV PHYSICS LETTERS B, 833. 137335-. ISSN 0370-2693, 1873-2445

Access the full-text of this item by clicking on the Open Access link.

Abstract

Femtoscopic correlations with the particle pair combinations K<inf>S</inf>0K<inf>S</inf>0 and K<inf>S</inf>0K± 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<inf>S</inf>0K<inf>S</inf>0 analysis includes quantum statistics and strong final-state interactions through the f<inf>0</inf>(980) and a<inf>0</inf>(980) resonances. The model used for the K<inf>S</inf>0K± analysis includes only the final-state interaction through the a<inf>0</inf> 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<inf>S</inf>0K<inf>S</inf>0 correlations is significantly greater than the strength of the K<inf>S</inf>0K± correlations, the new results are compatible with the a<inf>0</inf> resonance being a tetraquark state of the form (q<inf>1</inf>,q<inf>2</inf>‾,s,s‾), where q<inf>1</inf> and q<inf>2</inf> are u or d quarks.

Item Type: Article
Uncontrolled Keywords: 5106 Nuclear and Plasma Physics, 5107 Particle and High Energy Physics, 51 Physical Sciences
Divisions: Faculty of Science & Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 14 Sep 2022 14:55
Last Modified: 16 Jun 2026 09:19
DOI: 10.1016/j.physletb.2022.137335
Open Access URL: https://doi.org/10.1016/j.physletb.2022.137335
Related Websites:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3164706
Disclaimer: The University of Liverpool is not responsible for content contained on other websites from links within repository metadata. Please contact us if you notice anything that appears incorrect or inappropriate.