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Identical pion intensity interferometry at root s(NN)=2.4 GeV HADES collaboration

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F20%3A00525145" target="_blank" >RIV/61389005:_____/20:00525145 - isvavai.cz</a>

  • Result on the web

    <a href="https://doi.org/10.1140/epja/s10050-020-00116-w" target="_blank" >https://doi.org/10.1140/epja/s10050-020-00116-w</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1140/epja/s10050-020-00116-w" target="_blank" >10.1140/epja/s10050-020-00116-w</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Identical pion intensity interferometry at root s(NN)=2.4 GeV HADES collaboration

  • Original language description

    High-statistics pi(-)pi(-) and pi(+)pi(+) femtoscopy data are presented for Au + Au collisions at root s(NN) = 2.4 GeV, measured with HADES at SIS18/GSI. The experimental correlation functions allow the determination of the space-time extent of the corresponding emission sources via a comparison to models. The emission source, parametrized as three-dimensional Gaussian distribution, is studied in dependence on pair transverse momentum, azimuthal emission angle with respect to the reaction plane, collision centrality and beam energy. For all centralities and transverse momenta, a geometrical distribution of ellipsoidal shape is found in the plane perpendicular to the beam direction with the larger extension perpendicular to the reaction plane. For large transverse momenta, the corresponding eccentricity approaches the initial eccentricity. The eccentricity is smallest for most central collisions, where the shape is almost circular. The magnitude of the tilt angle of the emission ellipsoid in the reaction plane decreases with increasing centrality and increasing transverse momentum. All source radii increase with centrality, largely exhibiting a linear rise with the cube root of the number of participants. A substantial charge-sign difference of the source radii is found, appearing most pronounced at low transverse momentum. The extracted source parameters are consistent with the extrapolation of their energy dependence down from higher energies.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10303 - Particles and field physics

Result continuities

  • Project

    Result was created during the realization of more than one project. More information in the Projects tab.

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2020

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    European Physical Journal A

  • ISSN

    1434-6001

  • e-ISSN

  • Volume of the periodical

    56

  • Issue of the periodical within the volume

    5

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    20

  • Pages from-to

    140

  • UT code for WoS article

    000537289700007

  • EID of the result in the Scopus database

    2-s2.0-85085710627