We compute the $q\bar{q}g$ part of the NLO diffractive structure functions for deep-inelastic scattering using quasi Monte Carlo methods and compare to LO results.
We explore the potential for the extraction of the longitudinal structure function $F_L$ and the determination of the gluon unpolarized PDF from it. The impact of differing assumptions on sample sizes, systematic uncertainties and beam energy scenarios are investigated. With a sufficiently large number of center-of-mass energy configurations and well-controlled systematics, the EIC will...
Ultraperipheral heavy-ion collisions (UPCs) offer a clean way to study photon–nucleus interactions at high energy. In this talk, we present the first next-to-leading order predictions for inclusive $D^0$ production in Pb–Pb UPCs at the LHC, obtained with the new G$\gamma$A–FONLL framework. The framework relies on FONLL (Fixed-Order Next-to-Leading Logarithm) to model heavy-quark production in...
This overview of the Monte Carlo (MC) simulation process at the four main experiments - ATLAS, CMS, ALICE, and LHCb - at the Large Hadron Collider (LHC) is provided in this talk. Given the complexity and noise of proton-proton collisions, simulated samples are essential for understanding and interpreting the experimental results, enabling precise measurements and searches for new physics. The...
Fragmentation of charm and beauty quarks into charm and beauty hadrons in pp collisions at LHC has recently been measured to be nonuniversal, with deviations from universality as established from e+e- collisions by up to an order of magnitude.
We review these measurements and find a simple entirely data-driven phenomenological parametrization of this nonuniversality. We apply this to the...
A key focus of the physics program at the LHC is the study of head-on proton-proton collisions. However, an important class of physics can be studied for cases where the protons narrowly miss one another and remain intact. In such cases, the electromagnetic fields surrounding the protons can interact producing high-energy photon-photon collisions. Alternatively, interactions mediated by the...
The goal of LHCspin is to develop, in the next few years, innovative solutions and cutting-edge technologies to access spin physics in high-energy and high-intensity collisions of the LHC beam against a polarized fixed target.
This ambitious task poses its basis on the recent success of SMOG2, the unpolarized gas target installed in front of the LHCb spectrometer. SMOG2, already itself a...
The new results on three-pion Bose-Einstein correlations measured with the sample of proton-proton collisions recorded at the centre-of-mass energy of √s = 7 TeV will be presented, being the first study of three-particle Bose-Einstein correlations measured in the forward region provided by the LHCb detector. The results are interpreted within the core-halo model for the first time in...
