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

ALICE Collaboration

doi:10.1016/j.physletb.2017.09.009

Measuring K_S ⁰K^± interactions using Pb–Pb collisions at s_NN=2.76 TeV

ALICE Collaboration

Risultato della ricerca: Contributo su rivista › Articolo in rivista › peer review

Abstract

We present the first ever measurements of femtoscopic correlations between the K_S ⁰ and K^± particles. The analysis was performed on the data from Pb–Pb collisions at s_NN=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 K_S ⁰K⁻ are found to be equal within the experimental uncertainties to those for K_S 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.

Lingua originale	Inglese
pagine (da-a)	64-77
Numero di pagine	14
Rivista	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	774
DOI	https://doi.org/10.1016/j.physletb.2017.09.009
Stato di pubblicazione	Pubblicato - 10 nov 2017

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10.1016/j.physletb.2017.09.009

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@article{b950fca3c5464cd09c2efea682cdde60,

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.",

author = "\{ALICE Collaboration\} and S. Acharya and D. Adamov{\'a} and J. Adolfsson and Aggarwal, \{M. M.\} and \{Aglieri Rinella\}, G. and M. Agnello and N. Agrawal and Z. Ahammed and N. Ahmad and Ahn, \{S. U.\} and S. Aiola and A. Akindinov and Alam, \{S. N.\} and Alba, \{J. L.B.\} and Albuquerque, \{D. S.D.\} and D. Aleksandrov and B. Alessandro and \{Alfaro Molina\}, R. and A. Alici and A. Alkin and J. Alme and T. Alt and L. Altenkamper and I. Altsybeev and \{Alves Garcia Prado\}, C. and M. An and C. Andrei and D. Andreou and Andrews, \{H. A.\} and A. Andronic and V. Anguelov and C. Anson and T. Anti{\v c}i{\'c} and F. Antinori and P. Antonioli and R. Anwar and L. Aphecetche and H. Appelsh{\"a}user and S. Arcelli and R. Arnaldi and Arnold, \{O. W.\} and Arsene, \{I. C.\} and M. Arslandok and B. Audurier and A. Augustinus and R. Averbeck and Azmi, \{M. D.\} and P. Cortese and L. Ramello and M. Sitta",

note = "Publisher Copyright: {\textcopyright} 2017 The Author",

year = "2017",

month = nov,

day = "10",

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

language = "English",

volume = "774",

pages = "64--77",

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

issn = "0370-2693",

publisher = "Elsevier BV",

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TY - JOUR

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

AU - ALICE Collaboration

AU - Acharya, S.

AU - Adamová, D.

AU - Adolfsson, J.

AU - Aggarwal, M. M.

AU - Aglieri Rinella, G.

AU - Agnello, M.

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Ahmad, N.

AU - Ahn, S. U.

AU - Aiola, S.

AU - Akindinov, A.

AU - Alam, S. N.

AU - Alba, J. L.B.

AU - Albuquerque, D. S.D.

AU - Aleksandrov, D.

AU - Alessandro, B.

AU - Alfaro Molina, R.

AU - Alici, A.

AU - Alkin, A.

AU - Alme, J.

AU - Alt, T.

AU - Altenkamper, L.

AU - Altsybeev, I.

AU - Alves Garcia Prado, C.

AU - An, M.

AU - Andrei, C.

AU - Andreou, D.

AU - Andrews, H. A.

AU - Andronic, A.

AU - Anguelov, V.

AU - Anson, C.

AU - Antičić, T.

AU - Antinori, F.

AU - Antonioli, P.

AU - Anwar, R.

AU - Aphecetche, L.

AU - Appelshäuser, H.

AU - Arcelli, S.

AU - Arnaldi, R.

AU - Arnold, O. W.

AU - Arsene, I. C.

AU - Arslandok, M.

AU - Audurier, B.

AU - Augustinus, A.

AU - Averbeck, R.

AU - Azmi, M. D.

AU - Cortese, P.

AU - Ramello, L.

AU - Sitta, M.

PY - 2017/11/10

Y1 - 2017/11/10

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.

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.

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

Abstract

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Measuring K_S ⁰K^± interactions using Pb–Pb collisions at s_NN=2.76 TeV