Essays about: "Final-state radiation"

Found 4 essays containing the words Final-state radiation.

  1. 1. Studies of new light resonances decaying into two hadronic jets produced in association with a radiated jet

    University essay from Lunds universitet/Partikel- och kärnfysik; Lunds universitet/Fysiska institutionen

    Author : Zhiying Li; [2018]
    Keywords : dark matter mediator; ATLAS; dijet ISR jet; light resonance; ISR jet; dijet; trijet final state; kinematics variables; combinatorics; mass combinations; significance; thrust; LHC; CERN; Physics and Astronomy;

    Abstract : This report presents combinatorics studies in the search for a resonance of below 800GeVwhich decay product is a pair of hadronic jets from quarks. The resonance, predicted as a dark matter mediator, has couplings to dark matter particles as well as quarks and gluons. READ MORE

  3. 2. Parton Shower Algorithms - Possible Improvements

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

    Author : Baptiste Cabouat; [2017]
    Keywords : Parton shower; event generators; Monte Carlo simulations; QCD; Pythia; Final-state radiation; Initial-State radiation; evolution variable; dipole; recoils; deep inelastic scattering; Physics and Astronomy;

    Abstract : In this Master thesis, two directions have been explored to improve the current parton shower algorithm of the event generator Pythia. Firstly, three choices of transverse-momentum-ordered evolution variable have been studied for final-state radiation in order to allow more flexibility within the algorithm. READ MORE

  4. 3. Analysis of Monte Carlo data at low energies in electron-positron collider experiments using Initial State Radiation

    University essay from Kärnfysik

    Author : Joachim Pettersson; [2014]
    Keywords : ISR; Monte Carlo; pion; meson;

    Abstract : This report explores a novel application of the initial state radiation (radiative return) method in an electron-positron collider, to measure the electron-positron annihilation into a neutral pion and a photon  reaction cross section at low energies. The challenge of using ISR events for analysis is due to the combinatorics issue presented by the extra photon(s) in the final state. READ MORE

  5. 4. Study of systematic effects from the level of Final State Radiation in tt-background to SUSY dilepton channels

    University essay from KTH/Partikel- och astropartikelfysik

    Author : Nora Pettersson; [2011]
    Keywords : Particle physics; Supersymmetry; Systematic effects;

    Abstract : Uncertainties in radiative effects of the quarks in -background in the form of final state radiation (FSR) are significant when it comes to reducing all forms of systematics that can arise from measuring the jets energy. Analysis on FSR is in general conducted on different simulated samples where one has included the radiative effect using algorithms such as PYTHIA[29]. READ MORE