Sökning: "spinor-helicity"

Visar resultat 1 - 5 av 7 uppsatser innehållade ordet spinor-helicity.

1. 1. Spinor-Helicity Formalism and ScatteringAmplitudes in Various Dimensions

   Master-uppsats, Uppsala universitet/Teoretisk fysik

   Författare :Chen Huang; [2023]
   Nyckelord :;

   Sammanfattning : In recent decades, spinor-helicity formalism has gained popularity as a useful tool for studyingscattering amplitudes in four dimensions. This formalism has been extended to higher dimensions,but there is still much work to be done around its application. LÄS MER

3. 2. Pure Yang-Mills amplitudes in 5 Dimensions : A study of vector boson amplitudes at 4 and 5 points

   Master-uppsats, Uppsala universitet/Teoretisk fysik

   Författare :Athanasios Voutouras; [2023]
   Nyckelord :Yang-Mills; Scattering; Amplitudes; QFT;

   Sammanfattning : In this text we explore the case of pure Yang-Mills amplitudes in 5 spacetime dimensions for vector particles. Extending current toolsets such as the Spinor-Helicity formalism in 5D would be beneficial to the study of the various cases of super Yang-Mills and supergravity. LÄS MER

4. 3. A numerical implementation of the chirality-flow formalism

   Master-uppsats, Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation; Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation

   Författare :Zenny Wettersten; [2022]
   Nyckelord :chirality-flow; chirality; flow; spinor-helicity; tree-level; diagram; amplitude; generator; numerical; Physics and Astronomy;

   Sammanfattning : The chirality-flow formalism has proven to make amplitude calculations in the Standard Model analytically simple in comparison to previously established formalisms. To test the viability of the chirality-flow formalism for numerical implementations, a Chiral Automized Flow Extension (CAFE) for MadGraph5_aMC@NLO has been developed to compare amplitude evaluation time scaling between the two. LÄS MER

5. 4. Exploring properties of a 10-dimensional pure spinor twistor transform

   Master-uppsats, Uppsala universitet/Teoretisk fysik

   Författare :Cesar Garcia; [2021]
   Nyckelord :String Theory; Twistors; Spinor-helicity variables;

   Sammanfattning : In this review, several tools used in the study of super-Yang-Mills scattering amplitudes are discussed, namely spinor-helicity and (super)twistor variables. These variables are then implemented in string theories in 4D, and a suitable generalization to 10D using pure spinors is discussed. LÄS MER

7. 5. Employing the little group symmetry within the spinor-helicity formalism to constrain scattering amplitudes

   Kandidat-uppsats, Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation

   Författare :Samyak Parmar; [2021]
   Nyckelord :little group scaling; little group; spinor-helicity formalism; Physics and Astronomy;

   Sammanfattning : This thesis aims to describe the little group scaling and how it simplifies the calculation of scattering amplitudes. The little group has the defining property that it leaves a particular four-momentum invariant, which is used to describe how the internal structure of a particle is transformed under the little group. LÄS MER