QCD@LHC 2026

Session

Joint: Heavy Quarks & Low-scale QCD

1 Oct 2026, 14:00

University of Oxford

18. All-charm tetraquarks at hadron colliders: A high-precision fragmentation perspective

Dr Francesco Giovanni Celiberto (UAH Madrid)

Joint: Heavy Quarks & Low-scale QCD

Standard slot

We present a systematic study of all-charm tetraquark fragmentation in high-energy hadronic collisions within a heavy-flavor fragmentation framework in QCD. As part of this program, we construct the TQ4Q2.0 fragmentation functions by consistently incorporating, for the first time, all leading-power partonic fragmentation channels. The calculation combines updated NRQCD-inspired initial-scale...

86. Excited heavy mesons and exotics from lattice QCD

Christopher Thomas (University of Cambridge)

Joint: Heavy Quarks & Low-scale QCD

Standard slot

In recent years there has been a lot of progress in studying excited and exotic hadrons, resonances and scattering using first-principles lattice QCD calculations. I will discuss a selection of work on charm and charmonium-like mesons such as results relevant for the exotic $T_{cc}$, $T_{cs}$ and $T_{c\bar{s}}$ observed by LHCb, the $D^{*}_{0}(2300)$ and enigmatic $D^{*}_{s0}(2317)$ charm...

67. Heavy flavour production with SMOG2

Carlos Vazquez Sierra (Universidade da Coruña (ES))

Joint: Heavy Quarks & Low-scale QCD

Standard slot

The majority of charm quarks are produced in the initial stages of the collision. In heavy-ion collisions, this makes final-state particles containing charm quarks ideal probes of the formed medium, its effects, and its evolution. Charmonium states are among the most important probes of the deconfined QCD matter. A complete understanding of their production and interaction with the medium...

133. Heavy-flavour production in heavy-ion collisions with ALICE

Luigi Dello Stritto (Austrian Academy of Sciences (AT))

Joint: Heavy Quarks & Low-scale QCD

Standard slot

Heavy-ion collisions at the Large Hadron Collider (LHC) provide a unique environment for probing the properties of the quark-gluon plasma (QGP), a deconfined state of strongly interacting matter in which quarks and gluons are not bound into hadrons. Heavy quarks (charm and beauty), produced predominantly in the initial hard-scattering processes, traverse the full evolution of the medium and...

125. Isolating Unisolated Upsilons with Anomaly Detection in CMS Open Data

Radha Mastandrea

Joint: Heavy Quarks & Low-scale QCD

Standard slot

We present the first study of anti-isolated Upsilon decays to two muons (Υ→μ+μ−) in proton-proton collisions at the Large Hadron Collider. Using a machine learning (ML)-based anomaly detection strategy, we "rediscover" the Υ in 13 TeV CMS Open Data from 2016, despite overwhelming anti-isolated backgrounds. We elevate the signal significance to 6.4σ using these methods, starting from 1.6σ using...

39. Recent Heavy-Flavor Spectroscopy and Rare Decay Results from ATLAS

ATLAS Collaboration

Joint: Heavy Quarks & Low-scale QCD

Standard slot

This talk presents recent ATLAS results in heavy-flavor spectroscopy and rare decay searches. Highlights include studies of excited Bc meson states and resonance structures in the J/ψψ(2S) system, providing new insight into heavy-quark bound states and exotic hadron spectroscopy. Selected searches for rare decays are also discussed, extending the sensitivity of ATLAS to physics beyond the...

28. Recent results in Lambda and Ks production cross sections at LHCb

Carlos Vazquez Sierra (Universidade da Coruña (ES))

Joint: Heavy Quarks & Low-scale QCD

Standard slot

Recent LHCb measurements of the differential production cross-sections of prompt $K_S^0$ and $\Lambda$ hadrons in proton--proton collisions are presented. The production cross-sections and the $\Lambda/K_S^0$ production ratio are measured at centre-of-mass energies of $\sqrt{s}=13$ and $13.6\,\mathrm{TeV}$ as functions of rapidity and transverse momentum in the forward region. The results are...

68. Recent results of hadron spectroscopy with the amplitude-analysis techinque

Carlos Vazquez Sierra (Universidade da Coruña (ES))

Joint: Heavy Quarks & Low-scale QCD

Standard slot

Hadron spectroscopy plays a central role in deepening our understanding of the low-energy and non-perturbative regime of the strong interaction. Excited hadrons can be produced in heavy-hadron decays when kinematically allowed. In such processes, amplitude analysis provides a powerful technique to disentangle contributions from different resonances and to determine their spin-parity quantum...