UCT School on HighEnergy Physics 2019
CTMP/UCTCERN School on HighEnergy Physics 2019
The school is open to students at the University of Cape Town and in South Africa and abroad with an in interest in particle physics, both theoretical and experimental.
Join us for a furious week of learning, discussions and interactions.
Dates:  Monday 18  Friday 22 November 2019 
Place:  Department of Physics, University of Cape Town 
Organizers:  Heribert Weigert Cesareo Dominguez Tom Dietel Hubert Spiesberger 
Timetable
This timetable is tentative and may be updated again before the start of the school.
Monday 18 Nov 
Tuesday 19 Nov 
Wednesday 20 Nov 
Thursday 21 Nov 
Friday 22 Nov 
9:0010:30
Parallel QCDB / TRD 
9:0010:30
Parallel TQFT / TRD 
9:0010:30
Parallel QCDB / TRD 
9:0010:30
Parallel TQFT / TRD 

Coffee  
11:0012:30
Plenary Thermal QFT Matias Säppi 
11:0012:30
Plenary QCD in Bfields Alejandro Ayala 
11:0012:00
Plenary Quark Masses Cesareo Dominguez 
11:0012:30
Plenary TBD 

Lunch  
Lunch  Closing  
13:3014:00
Welcome 
13:0014:00
Plenary Stong Coupling Constant Cesareo Dominguez 

14:0015:30
Parallel TQFT / TRD 
14:0015:30
Parallel QCDB / TRD 
14:0015:30
Parallel TQFT / TRD 
14:0015:30
Parallel QCDB / TRD 

Discussion 
Legend:
TQFT  Putting a second T in QFT (Matias Säppi) 
QCDB  Quantum ChromoDynamics with Magnetic Fields (Alejandro Ayala) 
TRD  Astroparticle Physics with the ALICE TRD(Tom Dietel) 
Programme
The school covers selected topics related to research within the Centre for Theoretical and Mathematical Physics (CTMP) and the UCTCERN Research Centre. The format consists of a few overview talks intended for a broad audience, as well as parallel streams of lectures and experimtal, handson activities. There will be ample time for discussions and interaction with the lecturers and other students.
Putting a second T in QFT
Speaker: Matias Säppi (University of Helsinki, Helsinki Institute of Physics)
In these five lectures, the goal is to introduce the formalism for including thermal effects in field theory. Starting with the knowledge of elementary nonthermal QFT, we will first discuss the standard modifications needed to formulate the path integral formalism of QFT at finite temperature in thermal equilibrium for different types of fields. Some standard limits familiar from classical statistical mechanics will appear from the QFT description (lec. 12). The formalism can be applied to gauge theories, using QCD as the main example, where it can be used to study systems like quarkgluon plasma in heavyion collisions and the early universe. (lec. 3) Some problems, such as IR divergences, specific to this setting arise, and addressing them with methods such as hard thermal loop resummation and dimensional reduction is introduced. (lec. 4) The lectures will finish with a quick look into another aspect of thermal field theory: QCD at finite density, and a brief discussion on its applications to neutron star physics (lec. 5).
Quantum ChromoDynamics with Magnetic Fields
Speaker: Alejandro Ayala (Universidad Nacional Autónoma de México)
Magnetic fields are present in a large variety of physical systems of interest including heavyion collisions, the interior of compact astrophysical objects and even the early universe. It has been estimated that the magnetic field strength eB in peripheral heavyion collisions reaches values equivalent to a few times the pion mass squared, both at RHIC and at the LHC. The effects of such magnetic fields cannot be overlooked in a complete description of these systems and its understanding contributes, at a fundamental level, to a better characterization of the properties of QCD matter. In these five lectures I will introduce the formalism to include magnetic fields within the QCD field theoretical framework. I will first introduce Schwinger’s proper time method (lects. 1 and 2) to include the effects of a constant and homogeneous magnetic field in the propagator of charged scalars, fermions and gauge bosons. I will then proceed to discuss the oneloop calculation for the modification of the gluon propagation properties in a magnetized medium with and without thermal effects (lect. 3). I will then discuss the modification of the strong coupling constant in a magnetized medium also with and without thermal effects (lect. 4). Finally, I will discuss some possible physical scenarios where experimental observations can be linked to the existence of magnetic fields. These include the chiral magnetic effect and the photon puzzle in relativistic heavyion collisions (lect. 5).
Determination of QCD Quark Masses and the Strong Coupling
Speaker: Cesareo Dominguez (UCT)
Determination of QCD Quark Masses: The analytical determination of the Quantum Chromodynamics quark masses, will be discussed, after a general introduction to the Renormalization Group Equation, QCD current correlation functions, and the notion of QCDHadron Duality.
Determination of the QCD strong coupling: The analytical determination of the strong quarkgluon coupling of Quantum Chromodynamics at the scale of the taulepton mass will be discussed, after a general introduction to the Renormalization Group Equation, QCD current correlation functions, and the notion of QCDHadron Duality.
Astroparticle Physics with the ALICE Transition Radiation Detector
Organizer: Thomas Dietel (UCT)
Every square metre of the Earth's surface is bombarded by about one hundred cosmic ray muons per second. These muons originate from primary cosmich rays, i.e. highenergy particles such as protons, nuclei, electrons or photons that hit the upper atmosphere. These collision of the primary cosmic rays with air molecules produce air showers that contain a multitude of intermediate particles that finally decay into mostly muons and photons.
We will use a readout chamber of the ALICE Transition Radiation Detector and two scintillationd detectors to measure these cosmic ray muons. In the course of this, we will learn more about primary and secondary cosmic rays and particle detectors.
The focus of this stream will be on handson work with the detector: setting up the detectors, operation and data taking with the available setup, the analysis of the recorded data and the interpretation of these measurements. The handson work will be complemented by short presentations and lectures on specific topics.