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Martin Ljunggren

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Measuring KS 0K± interactions using Pb–Pb collisions at sNN=2.76 TeV

Author

  • S Acharya
  • D. Adamova
  • Jonatan Adolfsson
  • M.M Aggarwal
  • G Aglieri Rinella
  • M. Agnello
  • Peter Christiansen
  • Martin Ljunggren
  • Anders Oskarsson
  • David Silvermyr
  • Evert Stenlund
  • Vytautas Vislavicius
Show all

Summary, in English

We present the first ever measurements of femtoscopic correlations between the KS 0 and K± particles. The analysis was performed on the data from Pb–Pb collisions at sNN=2.76 TeV measured by the ALICE experiment. The observed femtoscopic correlations are consistent with final-state interactions proceeding 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+. Comparing the results of the present study with those from published identical-kaon femtoscopic studies by ALICE, mass and coupling parameters for the a0 resonance are tested. Our results are also compatible with the interpretation of the a0 having a tetraquark structure instead of that of a diquark. © 2017 The Author

Department/s

  • Particle and nuclear physics

Publishing year

2017

Language

English

Pages

64-77

Publication/Series

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

Volume

774

Document type

Journal article

Publisher

Elsevier

Topic

  • Subatomic Physics

Status

Published

ISBN/ISSN/Other

  • ISSN: 0370-2693