KS<SUP>0</SUP>KS<SUP>0</SUP> and KS<SUP>0</SUP>K<SUP>±</SUP> femtoscopy in pp collisions at √s=5.02and 13 TeV

Citations

WEB OF SCIENCE

17
Citations

SCOPUS

21

초록

Femtoscopic correlations with the particle pair combinations (KSKS0)-K-0 and (KSK +/-)-K-0 are studied in pp collisions at root 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 (KSKS0)-K-0 analysis includes quantum statistics and strong final-state interactions through the f(0) (980) and a(0) (980) resonances. The model used for the (KSK +/-)-K-0 analysis includes only the final-state interaction through the a(0) resonance. Source parameters extracted in the present work are compared with published values from pp collisions at root s = 7 TeV and the different pair combinations are found to be consistent. From the observation that the strength of the (KSKS0)-K-0 correlations is significantly greater than the strength of the (KSK +/-)-K-0 correlations, the new results are compatible with the a(0) resonance being a tetraquark state of the form (q(1), (q(2)) over bar, s, (s) over bar), where q(1) and q(2) are uor d quarks. (C) 2022 European Organization for Nuclear Research, ALICE. Published by Elsevier B.V.

키워드

HEAVY-ION COLLISIONSPB-PB COLLISIONSMESONSALICELHC
제목
KS<SUP>0</SUP>KS<SUP>0</SUP> and KS<SUP>0</SUP>K<SUP>±</SUP> femtoscopy in pp collisions at √s=5.02and 13 TeV
저자
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DOI
10.1016/j.physletb.2022.137335
발행일
2022-10-10
유형
Article
저널명
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
833