@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.",
}