Essays about: "eta meson"

Found 5 essays containing the words eta meson.

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

    University essay from Uppsala universitet/Kärnfysik

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

    Abstract : 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. READ MORE

  3. 2. Prediction for eta(') -> pi+ pi- pi0 gamma signal.

    University essay from Uppsala universitet/Kärnfysik

    Author : Alpaslan Gül; [2016]
    Keywords : eta; eta ; pi pi-pi0gamma;

    Abstract : The branching ratios of the radiative decays η(')→ π+π-π0γ are still unknown. Only an upper limit for η has been established and η' has not been observed. READ MORE

  4. 3. Can e+e- → ηπ+π- be detected at DAΦNE?

    University essay from Uppsala universitet/Kärnfysik

    Author : Viktor Thorén; [2015]
    Keywords : simulation; eta; pi ; pi-; e e- collisions;

    Abstract : Studying the annihilation of e+e- into hadrons is of great interest in the search for physics beyond the standard model. The cross sections of specific hadronic channels can be used in precise test of the Standard Model, or to estimate the anomalous muon magnetic moment, for which there are discrepancies between theory and experiment. READ MORE

  5. 4. Monte Carlo simulation and resolution study of the η → e+e− decay in the WASA-at-COSY detector

    University essay from Uppsala universitet/Kärnfysik

    Author : Walter Kenji Ikegami Andersson; [2014]
    Keywords : Resolution study; MDC; SEC; Monte Carlo; eta meson; rare decay; invariant mass;

    Abstract : A comparative study is done on the Mini Drift Chamber (MDC) and the Scintillating Electromagnetic Calorimeter (SEC), two main components of the WASA detector. The purpose of the study is to determine the most effective way to calculate the mass of the η−meson by determining the invariant mass of the final products in the η → e+e− decay. READ MORE

  6. 5. In-medium width of the η' meson

    University essay from Kärnfysik

    Author : Carl Niblaeus; [2013]
    Keywords : Eta prime meson; width; finite temperature; lifetime; QCD; chiral perturbation theory; Eta prime meson; vidd; ändlig temperatur; livstid; QCD; kiral störningsteori;

    Abstract : In this master’s thesis the width of the  meson is studied as a function of temperature. We consider a background medium consisting of a pion gas and assume a vanishing net baryon chemical potential. READ MORE