Identical pion intensity interferometry in central Au + Au collisions at 1.23A GeV

HADES Collaboration

doi:10.1016/j.physletb.2019.06.047

Identical pion intensity interferometry in central Au + Au collisions at 1.23A GeV

HADES Collaboration

Chair of Experimentalphysik - Dense and Strange Hadronic Matter

GSI Helmholtz Center
Cluster of Excellence E-conversion
Technical University of Munich
Johann Wolfgang Goethe University
CNRS/IN2P3 and Université Paris 11
Joint Inst. for Nuclear Research
Jagiellonian University
LIP-Laboratorio de Instrumentacao e Fisica Experimental de Particulas
Nuclear Physics Institute of the Cas
Justus-Liebig-Universität Gießen
HelmholtzZentrum Dresden-Rossendorf
Institute of Physics SAS
Technische Universität Darmstadt
Universidad de Santiago de Compostela
Institute for Nuclear Research of the Russian Academy of Sciences
ITEP
University of Warsaw
National Research Nuclear University MEPhI
University of Cyprus
University of Torino

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

16 Scopus citations

Abstract

We investigate identical pion HBT intensity interferometry in central Au + Au collisions at 1.23A GeV. High-statistics π⁻π⁻ and π⁺π⁺ data are measured with HADES at SIS18/GSI. The radius parameters, derived from the correlation function depending on relative momenta in the longitudinally comoving system and parametrized as three-dimensional Gaussian distribution, are studied as function of transverse momentum. A substantial charge-sign difference of the source radii is found, particularly pronounced at low transverse momentum. The extracted source parameters agree well with a smooth extrapolation of the center-of-mass energy dependence established at higher energies, extending the corresponding excitation functions down towards a very low energy.

Original language	English
Pages (from-to)	446-451
Number of pages	6
Journal	Physics Letters B
Volume	795
DOIs	https://doi.org/10.1016/j.physletb.2019.06.047
State	Published - 10 Aug 2019

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10.1016/j.physletb.2019.06.047

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@article{19a4c640399148e2aba54433fddb95b4,

title = "Identical pion intensity interferometry in central Au + Au collisions at 1.23A GeV",

abstract = "We investigate identical pion HBT intensity interferometry in central Au + Au collisions at 1.23A GeV. High-statistics π−π− and π+π+ data are measured with HADES at SIS18/GSI. The radius parameters, derived from the correlation function depending on relative momenta in the longitudinally comoving system and parametrized as three-dimensional Gaussian distribution, are studied as function of transverse momentum. A substantial charge-sign difference of the source radii is found, particularly pronounced at low transverse momentum. The extracted source parameters agree well with a smooth extrapolation of the center-of-mass energy dependence established at higher energies, extending the corresponding excitation functions down towards a very low energy.",

author = "\{HADES Collaboration\} and J. Adamczewski-Musch and O. Arnold and C. Behnke and A. Belounnas and A. Belyaev and Berger-Chen, \{J. C.\} and J. Biernat and A. Blanco and C. Blume and M. B{\"o}hmer and P. Bordalo and S. Chernenko and L. Chlad and C. Deveaux and J. Dreyer and A. Dybczak and E. Epple and L. Fabbietti and O. Fateev and P. Filip and P. Fonte and C. Franco and J. Friese and I. Fr{\"o}hlich and T. Galatyuk and Garz{\'o}n, \{J. A.\} and R. Gernh{\"a}user and M. Golubeva and R. Greifenhagen and F. Guber and M. Gumberidze and S. Harabasz and T. Heinz and T. Hennino and S. Hlavac and C. H{\"o}hne and R. Holzmann and A. Ierusalimov and A. Ivashkin and B. K{\"a}mpfer and T. Karavicheva and B. Kardan and I. Koenig and W. Koenig and Kolb, \{B. W.\} and G. Korcyl and G. Kornakov and R. Kotte and A. Kugler and T. Kunz",

note = "Publisher Copyright: {\textcopyright} 2019 The Author(s)",

year = "2019",

month = aug,

day = "10",

doi = "10.1016/j.physletb.2019.06.047",

language = "English",

volume = "795",

pages = "446--451",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Identical pion intensity interferometry in central Au + Au collisions at 1.23A GeV

AU - HADES Collaboration

AU - Adamczewski-Musch, J.

AU - Arnold, O.

AU - Behnke, C.

AU - Belounnas, A.

AU - Belyaev, A.

AU - Berger-Chen, J. C.

AU - Biernat, J.

AU - Blanco, A.

AU - Blume, C.

AU - Böhmer, M.

AU - Bordalo, P.

AU - Chernenko, S.

AU - Chlad, L.

AU - Deveaux, C.

AU - Dreyer, J.

AU - Dybczak, A.

AU - Epple, E.

AU - Fabbietti, L.

AU - Fateev, O.

AU - Filip, P.

AU - Fonte, P.

AU - Franco, C.

AU - Friese, J.

AU - Fröhlich, I.

AU - Galatyuk, T.

AU - Garzón, J. A.

AU - Gernhäuser, R.

AU - Golubeva, M.

AU - Greifenhagen, R.

AU - Guber, F.

AU - Gumberidze, M.

AU - Harabasz, S.

AU - Heinz, T.

AU - Hennino, T.

AU - Hlavac, S.

AU - Höhne, C.

AU - Holzmann, R.

AU - Ierusalimov, A.

AU - Ivashkin, A.

AU - Kämpfer, B.

AU - Karavicheva, T.

AU - Kardan, B.

AU - Koenig, I.

AU - Koenig, W.

AU - Kolb, B. W.

AU - Korcyl, G.

AU - Kornakov, G.

AU - Kotte, R.

AU - Kugler, A.

AU - Kunz, T.

PY - 2019/8/10

Y1 - 2019/8/10

N2 - We investigate identical pion HBT intensity interferometry in central Au + Au collisions at 1.23A GeV. High-statistics π−π− and π+π+ data are measured with HADES at SIS18/GSI. The radius parameters, derived from the correlation function depending on relative momenta in the longitudinally comoving system and parametrized as three-dimensional Gaussian distribution, are studied as function of transverse momentum. A substantial charge-sign difference of the source radii is found, particularly pronounced at low transverse momentum. The extracted source parameters agree well with a smooth extrapolation of the center-of-mass energy dependence established at higher energies, extending the corresponding excitation functions down towards a very low energy.

AB - We investigate identical pion HBT intensity interferometry in central Au + Au collisions at 1.23A GeV. High-statistics π−π− and π+π+ data are measured with HADES at SIS18/GSI. The radius parameters, derived from the correlation function depending on relative momenta in the longitudinally comoving system and parametrized as three-dimensional Gaussian distribution, are studied as function of transverse momentum. A substantial charge-sign difference of the source radii is found, particularly pronounced at low transverse momentum. The extracted source parameters agree well with a smooth extrapolation of the center-of-mass energy dependence established at higher energies, extending the corresponding excitation functions down towards a very low energy.

UR - https://www.scopus.com/pages/publications/85068207858

U2 - 10.1016/j.physletb.2019.06.047

DO - 10.1016/j.physletb.2019.06.047

M3 - Article

AN - SCOPUS:85068207858

SN - 0370-2693

VL - 795

SP - 446

EP - 451

JO - Physics Letters B

JF - Physics Letters B

ER -

Identical pion intensity interferometry in central Au + Au collisions at 1.23A GeV

Abstract

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