Measuring K0SK± interactions using Pb–Pb collisions at √sNN = 2.76 TeV

Acharya, S. and Antičić, Tome and Erhardt, Filip and Gotovac, Sven and Jerčić, Marko and Lončar, P. and Mudnić, Eugen and Planinić, Mirko and Poljak, Nikola and Simatović, Goran and Utrobičić, Antonija and Vicković, Linda and Zou, S. (ALICE Collaboration) (2017) Measuring K0SK± interactions using Pb–Pb collisions at √sNN = 2.76 TeV. Physics Letters B, 774. pp. 64-77. ISSN 0370-2693

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We present the first ever measurements of femtoscopic correlations between the K0 S 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 K0 SK− are found to be equal within the experimental uncertainties to those for K0 SK+. 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
Keywords: kaon, Pb-Pb, femtoscopy
Date: 2017
Subjects: NATURAL SCIENCES > Physics
Additional Information: © 2017 The Author. Published by Elsevier B.V. This is an open access article under the CC BY license ( Funded by SCOAP3. Received 22 May 2017. Received in revised form 24 August 2017. Accepted 4 September 2017. Available online 8 September 2017.
Divisions: Faculty of Science > Department of Physics
Publisher: Elsevier
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 09 Mar 2018 17:04
Last Modified: 09 Mar 2018 17:04

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