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 a0resonance are tested. Our results are also compatible with the interpretation of the a0having a tetraquark structure instead of that of a diquark.

Acharya, S., Adamovã¡, D., Adolfsson, J., Aggarwal, M.M., Aglieri Rinella, G., Agnello, M., et al. (2017). Measuring KS0K± interactions using Pb-Pb collisions at sNN=2.76 TeV. PHYSICS LETTERS. SECTION B, 774, 64-77 [10.1016/j.physletb.2017.09.009].

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

Alici, A.;Arcelli, S.;Basile, M.;Bellini, F.;Carnesecchi, F.;Cifarelli, L.;Colocci, M.;Guerzoni, B.;Jacazio, N.;Scioli, G.;
2017

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 a0resonance are tested. Our results are also compatible with the interpretation of the a0having a tetraquark structure instead of that of a diquark.
2017
Acharya, S., Adamovã¡, D., Adolfsson, J., Aggarwal, M.M., Aglieri Rinella, G., Agnello, M., et al. (2017). Measuring KS0K± interactions using Pb-Pb collisions at sNN=2.76 TeV. PHYSICS LETTERS. SECTION B, 774, 64-77 [10.1016/j.physletb.2017.09.009].
Acharya, S.; Adamovã¡, D.; Adolfsson, J.; Aggarwal, M. M.; Aglieri Rinella, G.; Agnello, M.; Agrawal, N.; Ahammed, Z.; Ahmad, N.; Ahn, S. U.; Aiola, S...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/617762
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