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000354865 088__ $$2arXiv$$aarXiv:2412.02536
000354865 1001_ $$0P:(DE-HGF)0$$aJorge, Adrian William Romero$$b0$$eCorresponding author
000354865 1112_ $$aTHE INTERNATIONAL WORKSHOP ON ASTRONOMY AND RELATIVISTIC ASTROPHYSICS$$cMachu Picchu Pueblo$$d2024-09-02 - 2024-09-06$$gIWARA2024$$wPeru
000354865 245__ $$aExploring Dark Photon Production and Kinetic Mixing Constraints in Heavy-Ion Collisions
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000354865 520__ $$aVector $U$-bosons, often referred to as 'dark photons', are potential candidates for mediating dark matter interactions. In this study, we outline a procedure to derive theoretical constraints on the upper bound of the kinetic mixing parameter $\epsilon^2(M_U)$ using dilepton data from heavy-ion from SIS to RHIC energies. The analysis is based on the microscopic Parton-Hadron-String Dynamics (PHSD) transport model, which successfully reproduces the measured dilepton spectra in $p+p$, $p+A$, and $A+A$ collisions. Besides the dilepton channels resulting from interactions and decays of Standard Model particles (such as mesons and baryons), we extend the PHSD approach to include the decay of hypothetical $U$-bosons into dileptons, $U \to e^+ e^-$. The production of these $U$-bosons occurs via Dalitz decays of pions, $\eta$-mesons, $\omega$-mesons, Delta resonances, as well as from the decays of vector mesons and $K^+$ mesons. This analysis provides an upper limit on $\epsilon^2(M_U)$ and offers insights into the accuracy required for future experimental searches for dark photons through dilepton experiments.
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000354865 7001_ $$0P:(DE-Ds200)OR7358$$aSong, Taesoo$$b2$$ugsi
000354865 7001_ $$0P:(DE-HGF)0$$aSagunski, Laura$$b3
000354865 773__ $$0PERI:(DE-600)2025762-4$$a10.1002/asna.20240132$$gp. e20240132$$pe20240132$$tAstronomische Nachrichten$$x1521-3994$$y2025
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