We present the first ever measurements of femtoscopic correlations between the K-S(0) and K-+/- particles. The analysis was performed on the data from Pb-Pb collisions at root S-NN = 2.76 TeV measured by the ALICE experiment. The observed femtoscopic correlations are consistent with final-state interactions proceeding via the a(0)(980) resonance. The extracted kaon source radius and correlation strength parameters for (KSK-)-K-0 are found to be equal within the experimental uncertainties to those for (KSK+)-K-0. Comparing the results of the present study with those from published identical-kaon femtoscopic studies by ALICE, mass and coupling parameters for the a(0) resonance are tested. Our results are also compatible with the interpretation of the a(0) having a tetraquark structure instead of that of a diquark. (c) 2017 The Author. Published by Elsevier B.V.

Measuring (KSK +/-)-K-0 interactions using Pb-Pb collisions at root S-NN=2.76 TeV / Acharya, S., Adamova, D., Adolfsson, J., Aggarwal, M.M., Rinella, G.A., Agnello, M., Agrawal, N., Ahammed, Z., Ahmad, N., Ahn, S.U., Aiola, S., Akindinov, A., Alam, S.N., Alba, J.L.B., Albuquerque, D.S.D., Aleksandrov, D., Alessandro, B., Molina, R.A., Alici, A., Alkin, A., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 774:(2017), pp. 64-77. [10.1016/j.physletb.2017.09.009]

Measuring (KSK +/-)-K-0 interactions using Pb-Pb collisions at root S-NN=2.76 TeV

Cunqueiro, L.;Meddi, F.;
2017

Abstract

We present the first ever measurements of femtoscopic correlations between the K-S(0) and K-+/- particles. The analysis was performed on the data from Pb-Pb collisions at root S-NN = 2.76 TeV measured by the ALICE experiment. The observed femtoscopic correlations are consistent with final-state interactions proceeding via the a(0)(980) resonance. The extracted kaon source radius and correlation strength parameters for (KSK-)-K-0 are found to be equal within the experimental uncertainties to those for (KSK+)-K-0. Comparing the results of the present study with those from published identical-kaon femtoscopic studies by ALICE, mass and coupling parameters for the a(0) resonance are tested. Our results are also compatible with the interpretation of the a(0) having a tetraquark structure instead of that of a diquark. (c) 2017 The Author. Published by Elsevier B.V.
2017
Heavy-ion collisions; femtoscopy; PP
01 Pubblicazione su rivista::01a Articolo in rivista
Measuring (KSK +/-)-K-0 interactions using Pb-Pb collisions at root S-NN=2.76 TeV / Acharya, S., Adamova, D., Adolfsson, J., Aggarwal, M.M., Rinella, G.A., Agnello, M., Agrawal, N., Ahammed, Z., Ahmad, N., Ahn, S.U., Aiola, S., Akindinov, A., Alam, S.N., Alba, J.L.B., Albuquerque, D.S.D., Aleksandrov, D., Alessandro, B., Molina, R.A., Alici, A., Alkin, A., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 774:(2017), pp. 64-77. [10.1016/j.physletb.2017.09.009]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1077151
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