Measuring KS0K± interactions using Pb–Pb collisions at √sNN=2.76 TeV

ALICE Collaboration

doi:10.1016/j.physletb.2017.09.009

Measuring KS0K± interactions using Pb–Pb collisions at √sNN=2.76 TeV

ALICE Collaboration

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

We present the first ever measurements of femtoscopic correlations between the KS0 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 KS0K− are found to be equal within the experimental uncertainties to those for KS0K+. 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.

Original language	English
Pages (from-to)	64-77
Number of pages	14
Journal	Physics Letters B
Volume	774
Early online date	8 Sept 2017
DOIs	https://doi.org/10.1016/j.physletb.2017.09.009
Publication status	Published - 10 Nov 2017

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https://www.sciencedirect.com/science/article/pii/S0370269317307074Licence: Creative Commons: Attribution (CC BY)

Nuclear Physics Equipment 2015 - ALICE Trigger Oscilloscope
Evans, P.
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
1/10/15 → 31/03/16
Project: Research Councils
Birmingham Nuclear Physics Group Consolidated Grant
Jones, P., Evans, P., Freer, M. & Wheldon, C.
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
1/08/14 → 30/09/18
Project: Research Councils
ALICE Upgrade Bridging Support
Evans, P.
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
1/08/14 → 31/12/14
Project: Research Councils

Cite this

@article{3da05af89b8e4d689707f522f2bde168,

title = "Measuring KS0K± interactions using Pb–Pb collisions at √sNN=2.76 TeV",

abstract = "We present the first ever measurements of femtoscopic correlations between the KS0 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 KS0K− are found to be equal within the experimental uncertainties to those for KS0K+. 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.",

author = "{ALICE Collaboration} and S. Acharya and H.A. Andrews and D. Evans and K.L. Graham and P.G. Jones and A. Jusko and M. Krivda and R. Lietava and {Villalobos Baillie}, O. and Emily Willsher and N. Zardoshti",

year = "2017",

month = nov,

day = "10",

doi = "10.1016/j.physletb.2017.09.009",

language = "English",

volume = "774",

pages = "64--77",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier",

}

TY - JOUR

T1 - Measuring KS0K± interactions using Pb–Pb collisions at √sNN=2.76 TeV

AU - ALICE Collaboration

AU - Acharya, S.

AU - Andrews, H.A.

AU - Evans, D.

AU - Graham, K.L.

AU - Jones, P.G.

AU - Jusko, A.

AU - Krivda, M.

AU - Lietava, R.

AU - Villalobos Baillie, O.

AU - Willsher, Emily

AU - Zardoshti, N.

PY - 2017/11/10

Y1 - 2017/11/10

N2 - We present the first ever measurements of femtoscopic correlations between the KS0 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 KS0K− are found to be equal within the experimental uncertainties to those for KS0K+. 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.

AB - We present the first ever measurements of femtoscopic correlations between the KS0 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 KS0K− are found to be equal within the experimental uncertainties to those for KS0K+. 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.

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 B

JF - Physics Letters B

ER -

Measuring KS0K± interactions using Pb–Pb collisions at √sNN=2.76 TeV

Abstract

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Projects

Nuclear Physics Equipment 2015 - ALICE Trigger Oscilloscope

Birmingham Nuclear Physics Group Consolidated Grant

ALICE Upgrade Bridging Support

Cite this