High-energy $e^{+}e^{-}$ data are essential for a global understanding of particle physics. Despite decades since the end of the Large Electron-Positron Collider (LEP), its data continue to play a central role in the precise study of perturbative and non-perturbative QCD. In this talk we present high precision and resolution measurements of energy-energy correlator (EEC) and thrust at...
LHCb is a detector designed to study the dynamics of particles produced at forward rapidities (2 < η < 5). This rapidity coverage is particularly well suited for investigating non-perturbative processes, such as the hadronization of light and heavy-flavored quarks. The latter is of special interest due to the distinct radiation patterns and hadronization timescales of heavy quarks compared to...
Exclusive electron and muon pair production ($\gamma\gamma\to ee/\mu\mu$) is traditionally measured as an LHC standard candle to probe the enigmatic soft QCD physics of proton breakup. Until recently, exclusive tau-lepton pair production ($\gamma\gamma\to \tau\tau$) was overlooked at the LHC. However, its potential sensitivity to the mysterious tau anomalous magnetic moment ($g-2$) has...
Despite the success of perturbative QCD predictions at the high-energy regime, QCD itself remains mysterious at its nominal scale (QCD scale). The LHC offers rich opportunities to probe the core of QCD related questions, by studying minibias events, double parton interactions, small-x and diffractive processes, as well as correlations in hadronization processes. This talk will summarize recent...
We introduce a general framework based on topologically active configurations, known as instantons, in the QCD vacuum to evaluate the non-perturbative transverse partonic structure of hadrons. Specifically, we derive the transverse-momentum-dependent parton distribution functions (TMDPDFs) for the pion, kaon, and rho meson, along with the Collins-Soper (CS) kernel, which governs the rapidity...
In this talk, we present results from analyzing pseudorapidity-binned charged-particle multiplicity distributions from proton-proton collisions at center-of-mass energies from 0.9 to 13 TeV, using data from the ATLAS experiment. For each multiplicity distribution, we compute the associated Shannon entropy to quantify the complexity of the final state. Surprisingly, we find that the entropy...
Recent theoretical developments have renewed interest in measurements of event shape variables in $e^{+}e^{-}$ collisions. We present a measurement of thrust, energy-energy correlator, and two-particle angular correlations of charged particles in $e^+e^-$ collisions at center-of-mass energies up to $\sqrt{s} = 209\,\mathrm{GeV}$, using newly released open data access from the DELPHI...
In the QCD vacuum, the hadron structure receive contributions from the topologically active configuration, known as instantons. We present a general framework to explore the impact of instantons on hadron form factors. The results of the gravitational and trace form factor, and its related Ji’s mass sum rules at medium resolution, shows consistency with recent lattice results when evolved to...
