Search for dissertations about: "semileptonic decays"

Found 5 swedish dissertations containing the words semileptonic decays.

  2. 1. Dynamics of quarks and leptons : theoretical Studies of Baryons and Neutrinos

    Author : Tommy Ohlsson; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Chiral quark model; baryons; conguration mixing; magnetic moments; Coleman{Glashow sum-rule; spin structure; spin polarizations; weak form factors; semileptonic decays; nucleon quark sea isospin asymmetry; neutrinos; neutrino oscillations; neutrino avors; mixing angles; mass squared dierences; MSW eect; numerical calculations; interpretation of experiments; Mathematical physics; Matematisk fysik;

    Abstract : The Standard Model of Elementary Particle Physics (SM) is the present theoryfor the elementary particles and their interactions and is a well-established theorywithin the physics community. The SM is a combination of Quantum Chromodynamics(QCD) and the Glashow{Weinberg{Salam (GWS) electroweak model. READ MORE

  4. 2. Properties of baryons in the chiral quark model

    Author : Tommy Ohlsson; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Chiral quark model; baryons; configuration mixing; magnetic moments; Coleman-Glashow sum-rule; spin polarizations; weak form factors; semilepronic decays; Physics; Fysik;

    Abstract : In this thesis, several properties of baryons are studied using the chiral quark model. The chiral quark model is a theory which can be used to describe low energy phenomena of baryons. In Paper 1, the chiral quark model is studied using wave functions with configuration mixing. READ MORE

  5. 3. Potential for B-physics measurements with a fixed-target proton-collision experiment

    Author : Jenny Ivarsson; Partikel- och kärnfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Elementary particle physics; CP Violation; quantum field theory; Elementarpartikelfysik; HERA-B; Fixed Target; kvantfältteori; B Physics; Monte Carlo Simulations; Fysicumarkivet A:1999:Ivarsson;

    Abstract : HERA-B is a high-energy physics experiment at HERA. It is a fixed-target experiment with a forward spectrometer to benefit from the strong boost of beauty hadrons. The main goal of HERA-B is to detect and measure the degree of CP violation in exclusive B-decays, with emphasis on the {em golden} decay, $golden$. READ MORE

  6. 4. The decay of beauty quark to τ lepton and neutrino in the DELPHI experiment at LEP

    Author : Gian Claudio Zucchelli; J.D. Hansen; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik; Physics; fysik;

    Abstract : Using 3.5 millions hadronic Z0 events collected during the LEP1 period at the DELPHI detector, the decays of b quarks to tvt have been searched for in both the inclusive and exclusive decay modes. The analysis technique is based on b-tagging, missing energy and identifications of t products. READ MORE

  7. 5. Soft and Hard Mesons in Chiral Perturbation Theory

    Author : Ilaria Jemos; Teoretisk partikelfysik - Geonomgår omorganisation; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : This thesis deals with Chiral Perturbation Theory (ChPT), an effective field theory for the strong force used to describe meson interactions. The work done can be split in two parts. The first one is on ChPT in its standard formulation. This theory has been very successful so far in describing low energetic processes. READ MORE