Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
We present the first measurements of femtoscopic correlations between the KS 0 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 KS 0K− are found to be equal within the experimental uncertainties to those for KS 0K+. 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 and with a KS 0K± 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 the interpretation of the a0(980) having a tetraquark structure instead of that of a diquark.
Язык оригинала | английский |
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Страницы (с-по) | 22-34 |
Число страниц | 13 |
Журнал | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
Том | 790 |
DOI | |
Состояние | Опубликовано - 10 мар 2019 |
ID: 37824950