Measuring KS0K± interactions using Pb-Pb collisions at √SNN=2.76 TeV



Acharya, S, Adamova, D, Adolfsson, J, Aggarwal, MM, Rinella, G Aglieri, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, N, Ahn, SU
et al (show 1024 more authors) (2017) Measuring KS0K± interactions using Pb-Pb collisions at √SNN=2.76 TeV PHYSICS LETTERS B, 774. pp. 64-77. ISSN 0370-2693, 1873-2445

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Abstract

We present the first ever measurements of femtoscopic correlations between the K<inf>S</inf> 0 and K± particles. The analysis was performed on the data from Pb–Pb collisions at s<inf>NN</inf>=2.76 TeV measured by the ALICE experiment. The observed femtoscopic correlations are consistent with final-state interactions proceeding via the a<inf>0</inf>(980) resonance. The extracted kaon source radius and correlation strength parameters for K<inf>S</inf> 0K are found to be equal within the experimental uncertainties to those for K<inf>S</inf> 0K+. Comparing the results of the present study with those from published identical-kaon femtoscopic studies by ALICE, mass and coupling parameters for the a<inf>0</inf> resonance are tested. Our results are also compatible with the interpretation of the a<inf>0</inf> having a tetraquark structure instead of that of a diquark.

Item Type: Article
Uncontrolled Keywords: 5106 Nuclear and Plasma Physics, 5107 Particle and High Energy Physics, 51 Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 11 Jan 2018 11:14
Last Modified: 16 Jun 2026 11:28
DOI: 10.1016/j.physletb.2017.09.009
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3015854
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