This paper presents the measurement of charged-hadron and identified-hadron (đŸ0 S, Λ, Ξ−) yields in photonuclear collisions using 1.7nb−1 of √𝑠𝑁ⁱ𝑁=5.02TeV Pb+Pb data collected in 2018 with the ATLAS detector at the Large Hadron Collider. Candidate photonuclear events are selected using a combination of tracking and calorimeter information, including the zero-degree calorimeter. The yields as a function of transverse momentum and rapidity are measured in these photonuclear collisions as a function of charged-particle multiplicity. These photonuclear results are compared with 0.1nb−1 of √𝑠𝑁ⁱ𝑁=5.02TeV 𝑝+Pb data collected in 2016 by ATLAS using similar charged-particle multiplicity selections. These photonuclear measurements shed light on potential quark-gluon plasma formation in photonuclear collisions via observables sensitive to radial flow, enhanced baryon-to-meson ratios, and strangeness enhancement. The results are also compared with the Monte Carlo dpmjet-iii generator and hydrodynamic calculations to test whether such photonuclear collisions may produce small droplets of quark-gluon plasma that flow collectively.

Aad, G., Aakvaag, E., Abbott, B., Abdelhameed, S., Abeling, K., Abicht, N.J., et al. (2025). Charged-hadron and identified-hadron (đŸ0𝑆, Λ, Ξ−) yield measurements in photonuclear Pb+Pb and 𝑝+Pb collisions at √𝑠𝑁ⁱ𝑁=5.02TeV with ATLAS. PHYSICAL REVIEW C, 111(6), 064908-1-064908-33 [10.1103/7lx4-x8rw].

Charged-hadron and identified-hadron (đŸ0𝑆, Λ, Ξ−) yield measurements in photonuclear Pb+Pb and 𝑝+Pb collisions at √𝑠𝑁ⁱ𝑁=5.02TeV with ATLAS

Alberghi, G. L.;Alfonsi, F.;Ballabene, E.;Bellagamba, L.;Bianco, G.;Boscherini, D.;Bruni, A.;Carratta, G.;Cremonini, D.;De Castro, S.;Fabbri, F.;Fabbri, L.;Franchini, M.;Gabrielli, A.;Giacobbe, B.;Lasagni Manghi, F.;Levrini, G.;Nechaeva, S.;Polini, A.;Rinaldi, L.;Romano, M.;Sanzani, E.;Sbarra, C.;Sbrizzi, A.;Semprini-Cesari, N.;Sioli, M.;Todome, K.;Valentinetti, S.;Villa, M.;Vittori, C.;Vivarelli, I.;Zoccoli, A.;
2025

Abstract

This paper presents the measurement of charged-hadron and identified-hadron (đŸ0 S, Λ, Ξ−) yields in photonuclear collisions using 1.7nb−1 of √𝑠𝑁ⁱ𝑁=5.02TeV Pb+Pb data collected in 2018 with the ATLAS detector at the Large Hadron Collider. Candidate photonuclear events are selected using a combination of tracking and calorimeter information, including the zero-degree calorimeter. The yields as a function of transverse momentum and rapidity are measured in these photonuclear collisions as a function of charged-particle multiplicity. These photonuclear results are compared with 0.1nb−1 of √𝑠𝑁ⁱ𝑁=5.02TeV 𝑝+Pb data collected in 2016 by ATLAS using similar charged-particle multiplicity selections. These photonuclear measurements shed light on potential quark-gluon plasma formation in photonuclear collisions via observables sensitive to radial flow, enhanced baryon-to-meson ratios, and strangeness enhancement. The results are also compared with the Monte Carlo dpmjet-iii generator and hydrodynamic calculations to test whether such photonuclear collisions may produce small droplets of quark-gluon plasma that flow collectively.
2025
Aad, G., Aakvaag, E., Abbott, B., Abdelhameed, S., Abeling, K., Abicht, N.J., et al. (2025). Charged-hadron and identified-hadron (��0��, Λ, Ξ−) yield measurements in photonuclear Pb+Pb and ��+Pb collisions at √����⁢��=5.02TeV with ATLAS. PHYSICAL REVIEW C, 111(6), 064908-1-064908-33 [10.1103/7lx4-x8rw].
Aad, G.; Aakvaag, E.; Abbott, B.; Abdelhameed, S.; Abeling, K.; Abicht, N. J.; Abidi, S. H.; Aboelela, M.; Aboulhorma, A.; Abramowicz, H.; Abulaiti, Y...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/1046432
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