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

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; ALICE Collaboration

doi:10.1016/j.physletb.2017.09.009

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

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, ALICE Collaboration

Particle and nuclear physics

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Abstract

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

Original language	English
Pages (from-to)	64-77
Number of pages	14
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	774
DOIs	https://doi.org/10.1016/j.physletb.2017.09.009
Publication status	Published - 2017

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Export Date: 24 November 2017

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Subatomic Physics

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10.1016/j.physletb.2017.09.009

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Acharya, S., Adamova, D., Adolfsson, J., Aggarwal, M. M., Aglieri Rinella, G., Agnello, M., Christiansen, P., Ljunggren, M., Oskarsson, A., Silvermyr, D., Stenlund, E., Vislavicius, V., & ALICE Collaboration (2017). Measuring KS 0K± interactions using Pb–Pb collisions at sNN=2.76 TeV. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 774, 64-77. https://doi.org/10.1016/j.physletb.2017.09.009

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

abstract = "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. {\textcopyright} 2017 The Author",

author = "S Acharya and D. Adamova and Jonatan Adolfsson and M.M Aggarwal and \{Aglieri Rinella\}, G and M. Agnello and Peter Christiansen and Martin Ljunggren and Anders Oskarsson and David Silvermyr and Evert Stenlund and Vytautas Vislavicius and \{ALICE Collaboration\}",

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Acharya, S, Adamova, D, Adolfsson, J, Aggarwal, MM, Aglieri Rinella, G, Agnello, M, Christiansen, P, Ljunggren, M, Oskarsson, A , Silvermyr, D, Stenlund, E, Vislavicius, V & ALICE Collaboration 2017, 'Measuring KS 0K± interactions using Pb–Pb collisions at sNN=2.76 TeV', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 774, pp. 64-77. https://doi.org/10.1016/j.physletb.2017.09.009

TY - JOUR

T1 - Measuring KS 0K± interactions using Pb–Pb collisions at sNN=2.76 TeV

AU - Acharya, S

AU - Adamova, D.

AU - Adolfsson, Jonatan

AU - Aggarwal, M.M

AU - Aglieri Rinella, G

AU - Agnello, M.

AU - Christiansen, Peter

AU - Ljunggren, Martin

AU - Oskarsson, Anders

AU - Silvermyr, David

AU - Stenlund, Evert

AU - Vislavicius, Vytautas

AU - ALICE Collaboration

N1 - Export Date: 24 November 2017

PY - 2017

Y1 - 2017

N2 - 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

AB - 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

UR - https://www.scopus.com/pages/publications/85033725022

U2 - 10.1016/j.physletb.2017.09.009

DO - 10.1016/j.physletb.2017.09.009

M3 - Article

SN - 0370-2693

VL - 774

SP - 64

EP - 77

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 -

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

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