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Parton distributions with scale uncertainties: a Monte Carlo sampling approach
We present the MCscales approach for incorporating scale uncertainties in parton distribution functions (PDFs). The new methodology builds on the...
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Investigating the Parton Shower Model in pythia8 with pp Collision Data at \(\mathrm {\sqrt{s}=13\, \text {TeV}}\)
Understanding the production of quarks and gluons in high-energy collisions and their evolution is a very active area of investigation. Monte Carlo...
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The role of multi-parton interactions in doubly-heavy hadron production
Beauty and charm quarks are ideal probes of pertubative Quantum Chromodymanics in proton–proton collisions, owing to their large masses. In this...
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QED corrections to parton distributions and Altarelli–Parisi splitting functions in the polarized case
We discuss the effect of QED corrections in the evolution of polarized parton distributions. We solve the corresponding evolution equations exactly...
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An Introductory Lecture on Generalised Parton Distributions
These lecture notes on Generalised Parton Distributions aim at providing a general picture of the field on the theoretical and phenomenological sides...
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Machine learning of log-likelihood functions in global analysis of parton distributions
Modern analysis on parton distribution functions (PDFs) requires calculations of the log-likelihood functions from thousands of experimental data...
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On the ambiguity between differential and integral forms of the Martin–Ryskin–Watt unintegrated parton distribution function model
In this work, we study the structure of the leading order Martin–Ryskin–Watt (MRW) unintegrated parton distribution function (UPDF) and explain in...
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PanScales parton showers for hadron collisions: formulation and fixed-order studies
We formulate PanScales parton showers for hadron collisions so as to achieve next-to-leading logarithmic (NLL) accuracy across a broad set of...
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Matching generalised transverse-momentum-dependent distributions onto generalised parton distributions at one loop
The operator definition of generalised transverse momentum-dependent (GTMD) distributions is exploited to compute for the first time the full set of...
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Double parton distributions out of bounds in colour space
We investigate the positivity of double parton distributions with a non-trivial dependence on the parton colour. It turns out that positivity is not...
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Revisiting evolution equations for generalised parton distributions
We revisit the evolution of generalised parton distributions (GPDs) in momentum space. We formulate the evolution kernels at one loop in perturbative...
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Initial state radiation in the Herwig 7 angular-ordered parton shower
We study the simulation of initial-state radiation in angular-ordered parton showers in order to investigate how different interpretations of the...
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Production of fully-heavy tetraquark states through the double parton scattering mechanism in pp and pA collisions
The production of fully-heavy tetraquark states in proton–proton ( pp ) and proton–nucleus ( pA ) collisions at the center-of-mass energies of the Large...
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Parton distributions and new physics searches: the Drell–Yan forward–backward asymmetry as a case study
We discuss the sensitivity of theoretical predictions of observables used in searches for new physics to parton distributions (PDFs) at large...
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Artificial neural network modelling of generalised parton distributions
We discuss the use of machine learning techniques in effectively nonparametric modelling of generalised parton distributions (GPDs) in view of their...
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Two-loop splitting in double parton distributions: the colour non-singlet case
At small inter-parton distances, double parton distributions receive their dominant contribution from the splitting of a single parton. We compute...