Measuring K<sub>S</sub><SUP>0</SUP>K<SUP>±</SUP> interactions using Pb-Pb collisions at √S<sub>NN</sub>=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 K<sub>S</sub><SUP>0</SUP>K<SUP>±</SUP> interactions using Pb-Pb collisions at √S<sub>NN</sub>=2.76 TeV. PHYSICS LETTERS B, 774. pp. 64-77.

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Abstract

We present the first ever measurements of femtoscopic correlations between the KS0 and K± particles. The analysis was performed on the data from Pb–Pb collisions at sNN=2.76 TeV measured by the ALICE experiment. The observed femtoscopic correlations are consistent with final-state interactions proceeding via the a0(980) resonance. The extracted kaon source radius and correlation strength parameters for KS0K− are found to be equal within the experimental uncertainties to those for KS0K+. Comparing the results of the present study with those from published identical-kaon femtoscopic studies by ALICE, mass and coupling parameters for the a0 resonance are tested. Our results are also compatible with the interpretation of the a0 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: 20 Jun 2024 19:08
DOI: 10.1016/j.physletb.2017.09.009
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3015854