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Discovering partonic rescattering in light nucleus collisions

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arxiv 2007.13754 v2 pith:6OG67ELO submitted 2020-07-27 hep-ph hep-exnucl-exnucl-th

Alexander Huss , Aleksi Kurkela , Aleksas Mazeliauskas , Risto Paatelainen , Wilke van der Schee , Urs Achim Wiedemann This is my paper · ORCID
classification hep-phhep-exnucl-exnucl-th
keywords collisionsnuclearpartonpartonicrescatteringaccuracybaselineenergy
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abstract

We demonstrate that oxygen-oxygen (OO) collisions at the LHC provide unprecedented sensitivity to parton energy loss in a system whose size is comparable to those created in very peripheral heavy-ion collisions. With leading and next-to-leading order calculations of nuclear modification factors, we show that the baseline in the absence of partonic rescattering is known with up to 2% theoretical accuracy in inclusive OO collisions. Surprisingly, a $Z$-boson normalized nuclear modification factor does not lead to higher theoretical accuracy within current uncertainties of nuclear parton distribution functions. We study a broad range of parton energy loss models and we find that the expected signal of partonic rescattering can be disentangled from the baseline by measuring charged hadron spectra in the range $20\,\text{GeV}<p_T<100\,\text{GeV}$

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Forward citations

Cited by 5 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. System-size dependence of charged-particle suppression in ultrarelativistic nucleus-nucleus collisions

    nucl-ex 2026-02 conditional novelty 7.0 of 10

    First neon-neon R_AA measurement shows charged-particle suppression increasing monotonically with nuclear size across oxygen, neon, xenon, and lead at LHC energies.

  2. Visualizing How the Structure of Large-Radius Jets Shapes Their Wakes

    hep-ph 2025-01 conditional novelty 7.0 of 10

    Hybrid Model simulations show ATLAS large-radius jet data rule out fully coherent jet energy loss, and low-pT jet-shape observables can visualize merging subjet wakes.

  3. Energy loss and theoretical uncertainties in small quark-gluon plasmas

    hep-ph 2025-06 conditional novelty 6.0 of 10

    A pQCD energy loss model with short-pathlength corrections shows the large formation time approximation fails self-consistently and, after a one-parameter fit, describes RHIC small systems while failing LHC small systems.

  4. Energy loss baseline for light hadrons in oxygen-oxygen collisions at $\sqrt{s_\mathrm{NN}}=5.36\,\text{TeV}$

    hep-ph 2025-09 accept novelty 4.0 of 10

    The no-quenching baseline for R_AA in OO collisions at 5.36 TeV is predicted to be under control to about 5% for hadron transverse momenta from 20 to 70 GeV.

  5. QGP@50: More than Four Decades of Jet Quenching

    hep-ph 2025-08 conditional novelty 2.0 of 10

    A historical and technical review of jet quenching in heavy-ion collisions, covering four decades of theory, the RHIC discovery, and modern Bayesian extractions of the jet transport parameter qhat.

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