Journal Article

GSI-2026-00014

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Determination of the $\phi$ -meson production process and its absorption cross section via directed flow

Steinheimer, J. (Corresponding author)GSI* ; Reichert, T. ; Bleicher, M.GSI*

2025
North-Holland Publ. Amsterdam

Please use a persistent id in citations: doi:10.1016/j.physletb.2025.139870  doi:10.15120/GSI-2026-00014

Abstract: It is shown that the directed flow of ϕ-mesons in Au+Au collisions at sNN=3 GeV, is sensitive to the production and the absorption cross section of the ϕ in a nuclear medium. This provides a new observable to constrain the in-medium properties of the ϕ which is independent of its absolute production rate. STAR data disfavor any significant ϕ-N absorption in dense nuclear matter and are consistent with a very small cross section of the ϕ comparable to the vacuum cross section. The similarity of the ϕ-meson and proton directed flow also indicates that the ϕ is produced in conjunction with a baryon.

Note: Published by Elsevier B.V. Funded by SCOAP³. This is an open access article under the CC BY license ( http://creativecommons.org/licenses/by/4.0/ ).

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Contributing Institute(s):

1. Heiße & Dichte QCD Materie (TES)
2. Helmholtz ForschAkad Hess. f. FAIR, HFHF (FHF)

Research Program(s):

1. 612 - Cosmic Matter in the Laboratory (POF4-612) (POF4-612)
2. Physics of hot and dense matter - Theory (HFHF project) (I:(DE-Ds200)HFHF-HI-Th) (I:(DE-Ds200)HFHF-HI-Th)
3. SUC-GSI-Frankfurt - Strategic university cooperation GSI-U Frankfurt/M (SUC-GSI-FR) (SUC-GSI-FR)
4. FIAS - Frankfurt Institute for Advanced Studies (FIAS) (FIAS)

Experiment(s):

1. no experiment theory work (theory)

Appears in the scientific report 2025

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Database coverage:
; ; ; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DOAJ Seal ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; Nationallizenz ; SCOAP3 sponsored Journal ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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