Refine
Year of publication
- 2019 (151) (remove)
Document Type
- Preprint (107)
- Article (43)
- Contribution to a Periodical (1)
Has Fulltext
- yes (151)
Is part of the Bibliography
- no (151) (remove)
Keywords
Institute
- Physik (147)
- Frankfurt Institute for Advanced Studies (FIAS) (137)
- Informatik (131)
- Medizin (3)
- ELEMENTS (2)
- Gesellschaftswissenschaften (1)
- Präsidium (1)
We present the first measurements of femtoscopic correlations between the K0 S and K± particles in pp collisions at √s = 7 TeV measured by the ALICE experiment. The observed femtoscopic correlations are consistent with final-state interactions proceeding solely 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+. Results of the present study are compared with those from identical-kaon femtoscopic studies also performed with pp collisions at √s = 7 TeV by ALICE andwith a K0 SK± measurement in Pb–Pb collisions at √sNN = 2.76 TeV. Combined with the Pb–Pb results, our pp analysis is found to be compatible with th e interpretation of the a0(980) having a tetraquark structure instead of that of a diquark.