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Measuring K0SK± interactions using pp collisions at √s=7 TeV (CROSBI ID 261851)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

(ALICE Collaboration) Acharya, S. ; ... ; Antičić, Tome ; ... ; Erhardt, Filip ; ... ; Gotovac, Sven ; ... ; Jerčić, Marko ; ... et al. Measuring K0SK± interactions using pp collisions at √s=7 TeV // Physics letters. B, 790 (2019), 22-34. doi: 10.1016/j.physletb.2018.12.033

Podaci o odgovornosti

Acharya, S. ; ... ; Antičić, Tome ; ... ; Erhardt, Filip ; ... ; Gotovac, Sven ; ... ; Jerčić, Marko ; ... ; Lončar, Petra ; ... ; Mudnić, Eugen ; ... ; Planinić, Mirko ; ... ; Poljak, Nikola ; ... ; Simatović, Goran ; ... ; Utrobičić, Antonija ; ... ; Vicković, Linda ; ... ; Zmeskal, J.

ALICE Collaboration

engleski

Measuring K0SK± interactions using pp collisions at √s=7 TeV

We present the first measurements of femtoscopic correlations between the KS0 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 KS0K− are found to be equal within the experimental uncertainties to those for KS0K+ . 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 KS0K± 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.

pp: scattering ; heavy ion: scattering ; correlation ; ALICE ; final-state interaction ; tetraquark ; structure ; diquark

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Podaci o izdanju

790

2019.

22-34

objavljeno

0370-2693

1873-2445

10.1016/j.physletb.2018.12.033

Povezanost rada

Fizika

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