3D NUCLEON - Unraveling the 3D Parton Structure of the Nucleon with Lattice QCD
The rich structure of hadrons can be quantitatively studied using the theory of the strong interaction, Quantum Chromodynamics (QCD). Being a non-perturbative quantum field theory, the only ab initio approach known today is to discretize QCD on a 4-dimensional Euclidean space-time lattice, a formalism known as lattice QCD, and perform a numerical evaluation via Markov chain Monte Carlo. Parton distribution functions (PDFs), generalized parton distributions (GPDs), transverse momentum dependent parton distributions (TMDs), and distribution amplitudes (DAs) are quantities that characterize the structure of hadrons and for more than half a century there has been a joint experimental and theoretical effort to determine them. However, access to the distributions themselves using lattice QCD was not possible until X. Ji proposed a new approach to extract quasi distributions and then match them to obtain the distributions of interest.
In this project we will use this approach to compute PDFs taking for the first time the continuum limit using three ensembles of twisted fermions simulated with approximately physical value of the up, down, strange and charm quark masses (physical point). We will also perform a flavor decomposition of the PDFs computing the individual quark and gluon PDFs using an ensemble of twisted mass fermion at the physical point. We will also expand the formalism to compute GPDs directly at the physical point. Research on new algorithms able to scale to exascale incorporating also machine learning will be investigated.
CyI Principal Investigator: Assoc. Prof. Dr. Giannis Koutsou
Additional Info
- Acronym: 3D NUCLEON
- Website: Under construction
- Center: CaSToRC
- Funding Source: RIF/EXCELLENCE/0421
- CyI Funding: €15.120
- Funding Period: 2 years 3 months
- Starting Date: 01/04/2022
- End Date: 30/06/2024
- Coordinator: UNIVERSITY OF CYPRUS
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Partners:
THE CYPRUS INSTITUTE
