Measuring ${K^0_S}^\pm$ interactions using pp collisions at $\sqrt{s}=7$ TeV

S. Acharya , Radosław Bala , M. Bonora , Łukasz Graczykowski , Małgorzata Janik , Adam Kisiel , Mònica Martinez , H. Murakami , Julian Myrcha , Jeremi Niedziela , Janusz Oleniacz , Jan Pluta , J. Rak , Przemysław Rokita , Krystian Rosłon , Tomasz Trzciński , Hanna Zbroszczyk


We present the first measurements of femtoscopic correlations between the $K^0_S$ and $K^{\pm}$ particles in pp collisions at $\sqrt{s} = 7$ TeV measured by the ALICE experiment. The observed femtoscopic correlations are consistent with final-state interactions proceeding solely via the $a_0$(980) resonance. The extracted kaon source radius and correlation strength parameters for $K^0_S K^-$ -- are found to be equal within the experimental uncertainties to those for $K^0_S K^+$. Results of the present study are compared with those from identical-kaon femtoscopic studies also performed with pp collisions at $\sqrt{s} = 7$ TeV by ALICE and with a $K^0_S K^{\pm}$ measurement in Pb–Pb collisions at $\sqrt{^{s_{NN}}$ = 2.76 TeV. Combined with the Pb–Pb results, our pp analysis is found to be compatible with the interpretation of the $a_0$ (980) having a tetraquark structure instead of that of a diquark
Collective authorALICE Collaboration
Author S. Acharya - [Variable Energy Cyclotron Centre India]
S. Acharya,,
, Radosław Bala
Radosław Bala,,
, M. Bonora - [European Organization for Nuclear Research (CERN)]
M. Bonora,,
- European Organization for Nuclear Research
, Łukasz Graczykowski (FP / NPD)
Łukasz Graczykowski,,
- Nuclear Physics Division
, Małgorzata Janik (FP / NPD)
Małgorzata Janik,,
- Nuclear Physics Division
, Adam Kisiel (FP / NPD)
Adam Kisiel,,
- Nuclear Physics Division
, Mònica Martinez - [Benemerita Universidad Autonoma de Puebla]
Mònica Martinez,,
, H. Murakami - [University of Tokyo]
H. Murakami,,
- University of Tokyo
, Julian Myrcha (FEIT / IN)
Julian Myrcha,,
- The Institute of Computer Science
, Jeremi Niedziela (FP / NPD)
Jeremi Niedziela,,
- Nuclear Physics Division
et al.`
Total number of authors1012
Journal seriesPhysics Letters B, ISSN 0370-2693
Issue year2019
Publication size in sheets0.6
ASJC Classification3106 Nuclear and High Energy Physics
Languageen angielski
LicenseJournal (articles only); author's original; Uznanie Autorstwa (CC-BY); after publication
1-s2.0-S0370269318309602-main.pdf 968.1 KB
Score (nominal)140
Score sourcejournalList
ScoreMinisterial score = 140.0, 22-09-2020, ArticleFromJournal
Publication indicators WoS Citations = 1; Scopus Citations = 2; Scopus SNIP (Source Normalised Impact per Paper): 2017 = 1.548; WoS Impact Factor: 2018 = 4.162 (2) - 2018=3.627 (5)
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