KS0KS0 and KS0K± femtoscopy in pp collisions at √s = 5.02 and 13 TeV (CROSBI ID 316169)
Prilog u časopisu | Pismo (znanstveno) | međunarodna recenzija
Podaci o odgovornosti
Acharya, S. ; ... ; Erhardt, Filip ; ... ; Gotovac, Sven ; ... ; Jerčić, Marko ; ... ; Karatović, David ; ... ; Lončar, Petra ; ... ; Mudnić, Eugen ; ... ; Planinić, Mirko ; ... ; Poljak, Nikola ; ... ; Vicković, Linda ; ... ; Zurlo, N.
ALICE Collaboration
engleski
KS0KS0 and KS0K± femtoscopy in pp collisions at √s = 5.02 and 13 TeV
Femtoscopic correlations with the particle pair combinations KS0KS0 and KS0K± are studied in pp collisions at √s=5.02 and 13 TeV by the ALICE experiment. At both energies, boson source parameters are extracted for both pair combinations, by fitting models based on Gaussian size distributions of the sources, to the measured two- particle correlation functions. The interaction model used for the KS0KS0 analysis includes quantum statistics and strong final-state interactions through the f0(980) and a0(980) resonances. The model used for the KS0K± analysis includes only the final-state interaction through the a0 resonance. Source parameters extracted in the present work are compared with published values from pp collisions at √s=7 TeV and the different pair combinations are found to be consistent. From the observation that the strength of the KS0KS0 correlations is significantly greater than the strength of the KS0K± correlations, the new results are compatible with the a0 resonance being a tetraquark state of the form (q1, q2‾, s, s‾), where q1 and q2 are u or d quarks.
p p: scattering ; interaction: model ; correlation function: two-particle ; statistics: quantum ; correlation ; final-state interaction ; tetraquark ; ALICE ; f0(980) ; a0(980) ; experimental results ; 5020: 13000 GeV-cms/nucleon
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Podaci o izdanju
833
2022.
137335
15
objavljeno
0370-2693
1873-2445
10.1016/j.physletb.2022.137335
Povezanost rada
Fizika, fizika elementarnih čestica i polja