Measuring K0sK± interactions using pp collisions at √s=7 TeV
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Abstract
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.Citation
Acharya, S., Adamová, D., Adler, A., Adolfsson, J., Aggarwal, M.M., Rinella, G.A., Agnello, M., Agrawal, N., Ahammed, Z., Ahn, S.U. and Aiola, S., (2019). 'Measuring KS0K±interactions using pp collisions at s= 7 TeV'. Physics Letters B, 790, pp.22-34. DOI: 10.1016/j.physletb.2018.12.033Publisher
ElsevierJournal
Physics Letters BDOI
10.1016/j.physletb.2018.12.033Additional Links
https://www.sciencedirect.com/science/article/pii/S0370269318309602Type
ArticleLanguage
enISSN
03702693Scopus Count
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