TY - JOUR
T1 - Measuring KS 0K± interactions using pp collisions at √s=7 TeV
AU - S., Acharya
AU - Adolfsson, J.
AU - Christiansen, P.
AU - Ljunggren, H.
AU - Nassirpour, A.
AU - Oskarsson, A.
AU - Richert, T.
AU - Silvermyr, D.
AU - Stenlund, E.
AU - Vislavicius, V.
AU - J., Zmeskal
AU - ALICE Collaboration
PY - 2019
Y1 - 2019
N2 - 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. © 2018
AB - 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. © 2018
U2 - 10.1016/j.physletb.2018.12.033
DO - 10.1016/j.physletb.2018.12.033
M3 - Article
SN - 0370-2693
VL - 790
SP - 22
EP - 34
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
ER -