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Showing result 1 - 5 of 8 essays matching the above criteria.

  1. 1. Three-body decay as a baryon polarizer

    University essay from Uppsala universitet/Kärnfysik

    Author : Carl Johan Königsson; [2023]
    Keywords : Three-body decay; polarization; CP violation; hyperon; resonance; Trekroppssönderfall; polarisation; CP-brytning; hyperon; resonans;

    Abstract : According to the standard model, the size of CP violation in the weak decay Λ → pπ- is predicted to be ∼ 10-5. This means that a very high precision is needed if we want to be able to measure it. READ MORE

  3. 2. A Non-Relativistic Model of Tetraquarks

    University essay from KTH/Skolan för teknikvetenskap (SCI)

    Author : Per Lundhammar; [2020]
    Keywords : ;

    Abstract : In this thesis, a non-relativistic model of tetraquark in a diquark-antidiquark configuration is investigated. Using a variation of the Cornell potential, the Schrödinger equation is solved numerically, and the four-body problem of the tetraquark is separated into to three two-body problems. READ MORE

  4. 3. Dalitz Plot Analysis of η'→ηπ+π-

    University essay from Uppsala universitet/Kärnfysik

    Author : Simon Taylor; [2020]
    Keywords : Dalitz Plot Analysis; BESIII; meson physics; maximum likelihood method; chi2 method;

    Abstract : Chiral Perturbation Theory (ChPT) is a tool for studying the strong interaction at low energies. The Perturbation theory is developed around the limit where the light quarks, u,d,s are approximated to be massless. In this approximation the isospin symmetry, one of the main features of the strong interaction, is fulfilled automatically. READ MORE

  5. 4. Explaining B-> D^(*) tau nu Decays with a Two Higgs Doublet Model using the Froggatt-Nielsen Framework

    University essay from Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation; Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation

    Author : Emil Andersson; [2017]
    Keywords : Two Higgs Doublet Model; 2HDM; Froggatt-Nielsen; Flavon; B-meson; Higgs; Beyond Standard Model; BSM; Theoretical Particle Physics; Physics and Astronomy;

    Abstract : In recent years, the BaBar, Belle and LHCb experiments have observed an excess of $B\to D^{(*)}\tau\nu$ decays compared to Standard Model predictions. In this thesis, we investigate if it is possible to explain this excess with a two Higgs doublet model using the Froggatt-Nielsen framework. READ MORE

  6. 5. The 't Hooft model as a testing ground for Quantum Chromodynamics

    University essay from Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation

    Author : Felix Tellander; [2016]
    Keywords : Physics and Astronomy;

    Abstract : We study a 1+1 dimensional Yang-Mills model in the light-cone gauge (the ’t Hooft model). The colour group is SU (N ) and we study the limit N → ∞, the limit is taken such that g²N is kept constant. In this limit the only contributing diagrams are planar diagrams without gluon-gluon interactions. READ MORE