Sökning: "BEPC-II"

Hittade 3 uppsatser innehållade ordet BEPC-II.

  1. 1. Monte Carlo Simulation of e + e − → Σ̄ 0 Λ/ Σ̄ 0 Σ 0 Reaction

    Master-uppsats, Uppsala universitet/Kärnfysik

    Författare :Halimeh Vaheid; [2017]
    Nyckelord :Monte Carlo Simulation; Lambda; Sigma; Electromagnetic Form Factor;

    Sammanfattning : A central objective of the field of nuclear physics is understanding the fundamental properties of hadrons and nuclei in terms of QCD. In the last decade, a large range of experimental and theoretical methods have been developed to study the nature of quark confinement and the structure of hadrons which are composites of quarks and gluons. LÄS MER

  3. 2. Study of Discrete Symmetries in η' Meson Decays with BESIII

    Master-uppsats, Uppsala universitet/Kärnfysik

    Författare :Viktor Thorén; [2017]
    Nyckelord :BESIII; BEPC-II; CP-violation; rare decay; eta ;

    Sammanfattning : This thesis studies the rare decay η' → π+π-e+e- using Monte Carlo simulations and data from the BES-III detector in Beijing, China. The branching ratio of the reaction was measured at BES-III in 2013 using a data set of 225×106 J/Ψ events. LÄS MER

  4. 3. Monte Carlo simulation study of the e+e- →Lambda Lamba-Bar reaction with the BESIII experiment

    Kandidat-uppsats, Uppsala universitet/Kärnfysik

    Författare :Niklas Forssman; [2016]
    Nyckelord :Hadron; Nuclear physics; Lambda; Monte Carlo-simulations; BES; BESIII; Event selection;

    Sammanfattning : Studying the reactions where electrons and positrons collide and annihilate so that hadrons can be formed from their energy is an excellent tool when we try to improve our understanding of the standard model. Hadrons are composite quark systems held together by the strong force. LÄS MER