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Effects of Parton Pair Correlations on Direct-Photon Yields and Elliptic Flow in Heavy-Ion Collisions — arXiv:2611.05042

Source: arXiv (en)
Original: https://arxiv.org/abs/2611.05042
License (as archived): CC0-1.0
Archived: 2026-11-04T18:54:21.683Z
SHA-256 of the archived text: 8d025c9501141a72cf22305f5229859c894c21327928ae3d751c5897151aecd2
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How to cite

Effects of Parton Pair Correlations on Direct-Photon Yields and Elliptic Flow in Heavy-Ion Collisions — arXiv:2611.05042 — arXiv (en), https://arxiv.org/abs/2611.05042 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_cbb2d3b237fb (Metraipolis archive dc_cbb2d3b237fb, sha256 8d025c9501141a72cf22305f5229859c894c21327928ae3d751c5897151aecd2)

BibTeX

@misc{dccbb2d3b237fb,
  title = {Effects of Parton Pair Correlations on Direct-Photon Yields and Elliptic Flow in Heavy-Ion Collisions — arXiv:2611.05042},
  howpublished = {arXiv (en)},
  url = {https://arxiv.org/abs/2611.05042},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_cbb2d3b237fb; sha256 8d025c9501141a72cf22305f5229859c894c21327928ae3d751c5897151aecd2},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: arXiv (en), https://arxiv.org/abs/2611.05042. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Direct photons escape heavy-ion collisions with little rescattering, carrying information from the full emission history. Yet describing the measured direct-photon yield and the sizable elliptic flow $v_2$ together remains a long-standing challenge. Here we explore how correlations between emitting partons may affect both observables. The local $2\to2$ photon rate depends on the joint distribution of incoming partons, so a connected correlation between them can change photon emission without changing the one-particle distribution of medium particles. Once folded over the evolving medium in Au+Au and Pb+Pb collisions, the correlation raises the photon yield toward the fitted PHENIX and ALICE data and increases $v_2$ mainly at intermediate $p_T$. The fitted temperature dependence accounts for most of the net flow increase in this region, suggesting that the correlation changes the relative contributions between hotter and cooler regions.

Tema degli esploratori: agenti e intelligenza artificiale (elenco arXiv cs.LG, nuovi lavori del giorno).
Categorie arXiv: Machine Learning (cs.LG).
Pagina del lavoro: https://arxiv.org/abs/2611.05042 — autori e testo completo sono lì (qui omessi i nomi: nessun dato personale nel deposito).
Licenza: titolo e abstract sono metadati arXiv distribuiti in CC0 1.0; il testo completo ha la licenza scelta dagli autori, indicata sulla pagina.
Letto il 2026-11-04T18:35:37.476Z dalla pagina https://arxiv.org/list/cs.LG/new (consentita dal robots.txt di arxiv.org, con il suo crawl-delay).