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Measuring KS 0K± interactions using pp collisions at √s=7 TeV

S., Acharya ; Adolfsson, J. LU ; Christiansen, P. LU ; Ljunggren, H. LU ; Nassirpour, A. LU orcid ; Oskarsson, A. LU ; Richert, T. LU ; Silvermyr, D. LU orcid ; Stenlund, E. LU and Vislavicius, V. LU , et al. (2019) In Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 790. p.22-34
Abstract
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... (More)
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 (Less)
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type
Contribution to journal
publication status
published
subject
in
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
volume
790
pages
13 pages
publisher
Elsevier
external identifiers
  • scopus:85059933311
ISSN
0370-2693
DOI
10.1016/j.physletb.2018.12.033
language
English
LU publication?
yes
id
4d9391da-82d2-4512-bfa6-9287e1fcbca0
date added to LUP
2022-04-05 18:48:33
date last changed
2023-11-26 04:44:01
@article{4d9391da-82d2-4512-bfa6-9287e1fcbca0,
  abstract     = {{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}},
  author       = {{S., Acharya and Adolfsson, J. and Christiansen, P. and Ljunggren, H. and Nassirpour, A. and Oskarsson, A. and Richert, T. and Silvermyr, D. and Stenlund, E. and Vislavicius, V. and J., Zmeskal}},
  issn         = {{0370-2693}},
  language     = {{eng}},
  pages        = {{22--34}},
  publisher    = {{Elsevier}},
  series       = {{Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics}},
  title        = {{Measuring KS 0K± interactions using pp collisions at √s=7 TeV}},
  url          = {{http://dx.doi.org/10.1016/j.physletb.2018.12.033}},
  doi          = {{10.1016/j.physletb.2018.12.033}},
  volume       = {{790}},
  year         = {{2019}},
}