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Content archived on 2024-05-29

Lattice calculation of the electric dipole moment of the neutron

Objective

A lot of theoretical and experimental effort in particle physics is devoted to the discovery of physics "beyond" the Standard Model (SM). Recent solar neutrino experiments have indeed necessitated modifications of the SM. Further important observational in put can be expected in the future that might completely change our present-day understanding. Such opportunities resulted in renewed efforts of precision determinations of the electric dipole moment of the neutron d. In the SM d vanishes but in some supers ymmetric (SUSY) and Grand Unified Theory (GUT) scenarios this is not the case. Hence it is important to obtain more stringent experimental contraints. To realise the full potential of such experiments the dependence of d on the so-called theta angle that violates time reversal symmetry is required. The smallness of the theta angle is referred to as the "strong CP" problem. Using quantum chromodynamics (QCD), the theory of strong interactions between the quarks and gluons that make up the neutron, this rel ationship can be evaluated. This project aims at calculating the ratio d/theta. This is done by means of numerical simulations (Lattice QCD). A new 5 TFlops supercomputer in the UK will be used that has been developed by the researcher within a team of pa rticle theorists based at Columbia University. Overlap fermions preserving chiral symmetry on the lattice will be utilized as well as many other novel theoretical and algorithmic methods. The research provides a solid training in all aspects of lattice fi eld theory: theoretical formalism, particle physics phenomenology (SM and beyond), supercomputing and presentation skills. The researcher will also transfer her in-depth knowledge of computer hardware and software to the host group, and in particular to yo ung European researchers and strengthen international collaborations.

Fields of science (EuroSciVoc)

Keywords

Topic(s)

Call for proposal

FP6-2002-MOBILITY-7
See other projects for this call

Funding Scheme

IIF - Marie Curie actions-Incoming International Fellowships

Coordinator

UNIVERSITY OF GLASGOW
EU contribution
No data
Total cost
No data