Measuring K0SK± interactions using Pb–Pb collisions at √sNN=2.76TeV
Fecha
2017Autor
Abstract
We present the first ever measurements of femtoscopic correlations between the K0Sand K±particles. The analysis was performed on the data from Pb–Pb collisions at √sNN=2.76TeV 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 K0SK−are found to be equal within the experimental uncertainties to those for K0SK+. Comparing t ...
We present the first ever measurements of femtoscopic correlations between the K0Sand K±particles. The analysis was performed on the data from Pb–Pb collisions at √sNN=2.76TeV 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 K0SK−are found to be equal within the experimental uncertainties to those for K0SK+. 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. ...
En
Physics letters. B. Amsterdam. Vol. 774 (Nov. 2017), p. 64-77
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