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Rencontres de Physique des Particules 2026

11–13 mars 2026
Fuseau horaire Europe/Paris

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Session

QCD

13 mars 2026, 09:10

Documents de présentation

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  1. 34. Review talk: Flavour
    Nazila Mahmoudi (Lyon University)
    13/03/2026 09:10
  2. 35. The two-photon decay amplitude of $K_L\to\mu^+\mu^-$ from Lattice QCD
    Dr En-Hung Chao
    13/03/2026 09:50

    The decay of a long-lived kaon to a pair of muons (KL2mu) could serve as a precision test of the Standard Model (SM) and a probe to physics beyond due to its sensitivity to physics at high energies. A precise determination of the size of the long-distance, two-photon contribution to KL2mu -- as well as its interference with the analytically-computable short-distance (SD) contribution -- are...

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  3. 36. What can Regge theory tell us about hadron dynamics and spectroscopy?
    Gloria Montana (Universitat de Barcelona & ICCUB)
    13/03/2026 10:10

    The spectrum of light hadrons encodes essential information about the non-perturbative dynamics of QCD. Most observed hadrons are resonances, rigorously defined as poles of scattering amplitudes in the complex energy plane. Their properties, such as masses, widths, and couplings, are therefore determined by the analytic structure of the amplitudes describing low-energy hadronic interactions....

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  4. 37. Investigating Quarkonium Physics
    Luca Maxia (LPTHE - Sorbonne & CNRS)
    13/03/2026 10:30

    Quarkonia are bound states formed by a heavy-quark pair. They are commonly described within the framework of non-relativistic QCD. Yet, this description is not sufficient to fully exploit data involving quarkonium production, which still hide precious information and call for theoretical improvements. In this talk, I will try to give a (biased) perspective on what quarkonium physics can teach...

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  5. 27. Review talk: Quark-gluon plasma dynamics in heavy-ion collisions
    Kirill Boguslavski (SUBATECH)
    13/03/2026 14:00
  6. 28. Revisiting extremely high energy QED bremsstrahlung in matter
    Omar Elgedawy (Ecole Polytechnique, CPHT)
    13/03/2026 14:40

    Very high energy electrons passing through ordinary matter initiate electromagnetic showers that are produced by bremsstrahlung and pair production. At extremely high energies, the quantum-mechanical duration of these processes becomes longer than the mean free time for elastic scattering in the medium, which leads to a significant suppression of bremsstrahlung (and pair production). This...

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  7. 38. Cold quark matter: Renormalization group improvement
    M. Loïc Fernandez (Laboratoire Charles Coulomb)
    13/03/2026 15:00

    We will discuss the recent developments in renormalization group improvements of the cold and dense QCD pressure (Phys. Rev. D 111, 034020 and Phys. Rev. Lett. 129, 212001) at next-to-next-to leading order (NNLO) through the renormalization group optimized perturbation theory (RGOPT) and at all-order resummation of the soft modes. RGOPT applied for the very first time at NNLO displayed a...

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  8. 29. Quantum thermodynamics and spin polarization in boost-invariant fluid of Dirac fermions
    Andrea Palermo
    13/03/2026 15:20

    The spin polarisation of Dirac fermions is an important observable in the Quark Gluon Plasma (QGP), as it allows connecting an entirely quantum property to the thermodynamic gradients at the freeze-out stage. For a correct description of experimental data, non-equilibrium effects play a crucial role, but they are harder to study and involve some theoretical ambiguities. I will present exact...

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