The origin of mass at the Large Hadron Collider

Summary

This project aims to investigate various theoretical aspects related to the Higgs-like particle discovered at the Large Hadron Collider (LHC) and possible new theories behind the electroweak symmetry breaking in light of ongoing experiments at LHC and other high-energy facilities.

Supervisor(s)

Associate Professor Archil Kobakhidze

Research Location

School of Physics

Program Type

Masters/PHD

Synopsis

The discovery of a new Higgs-like particle at the Large Hadron Collider (LHC) has been a major step forward in our understanding of the origin of mass of elementary particles. However, this discovery is just a beginning what is believed to be an exciting scientific journey through many other breakthrough discoveries in the field. This belief is based on several theoretical considerations, which are highlighting remaining important problems to be understood. Among those problems are:

• Is the newly discovered particle the Higgs boson predicted by the simplest theory known as the Standard Model, or there is more complex theory behind it? This question can be answered by diligent studies of properties of the Higgs-like particles, such as stability of the electroweak vacuum, possible anomalous interactions, spin and CP-parity, etc.

• What guarantees stability of the Higgs boson mass under the quantum corrections? This question maybe resolved within new type of theories, which exhibit new symmetries and particles, such as supersymmetry and scale-invariance. An alternative theoretical possibility is that the origin of mass is related to a new strongly coupled dynamics.

• What is dark matter and can we observe dark matter particles at LHC? How neutrinos are getting their masses? What is the physical mechanism that generates the observed asymmetry between matter and antimatter in the Universe? To answer these questions we also need to study new theoretical models beyond the standard theory. The new particles and interactions motivated by the above theoretical considerations may indeed be discovered at LHC.

Additional Information


HDR Inherent Requirements

In addition to the academic requirements set out in the Science Postgraduate Handbook, you may be required to satisfy a number of inherent requirements to complete this degree. Example of inherent requirement may include:

- Confidential disclosure and registration of a disability that may hinder your performance in your degree;
- Confidential disclosure of a pre-existing or current medical condition that may hinder your performance in your degree (e.g. heart disease, pace-maker, significant immune suppression, diabetes, vertigo, etc.);
- Ability to perform independently and/or with minimal supervision;
- Ability to undertake certain physical tasks (e.g. heavy lifting);
- Ability to undertake observatory, sensory and communication tasks;
- Ability to spend time at remote sites (e.g. One Tree Island, Narrabri and Camden);
- Ability to work in confined spaces or at heights;
- Ability to operate heavy machinery (e.g. farming equipment);
- Hold or acquire an Australian driver’s licence;
- Hold a current scuba diving license;
- Hold a current Working with Children Check;
- Meet initial and ongoing immunisation requirements (e.g. Q-Fever, Vaccinia virus, Hepatitis, etc.)

You must consult with your nominated supervisor regarding any identified inherent requirements before completing your application.

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Keywords

dark matter, Higgs particle, fundamental particles and forces

Opportunity ID

The opportunity ID for this research opportunity is: 1608

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