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Isospin Breaking in Kaon Decays to Pions

Borg, Fredrik LU (2005)
Abstract (Swedish)
Popular Abstract in Swedish

Amplituden för fem olika processer av typen K -> 3 Pi och tre olika av K -> 2 Pi har beräknats i kiral störningsteori. Beräkningen har genomförts flera gånger med olika approximationer. Först används isospin-approximationen, men detta resulterar i diskrepanser mellan teori och experiment. I följande beräkningar tas isospin-approximationen bort i två steg, för att se om denna är förklaringen till uppkomna diskrepanser.



Arbetet motiveras dels genom dess kontroll av den kirala störningsteorin och dels genom resulterande bestämning av några fria parametrar i teorin.
Abstract
The five different K -> 3 Pi and the three K -> 2 Pi decays are calculated in Chiral Perturbation Theory. The calculation is done using different approximations, to study whether this changes the result significantly. First the isospin approximation is used. Discrepancies are then found between theory and experiment. Further calculations without the isospin approximation are then done to see if this solves the found problems. The purpose is two-fold. To test the validity of Chiral Perturbation Theory and to fix some of the unknown parameters in the theory.
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author
supervisor
opponent
  • Professor Pich, Antonio, University of Valencia
organization
publishing date
type
Thesis
publication status
published
subject
keywords
Elementary particle physics, termodynamik, statistisk fysik, gravitation, relativitet, kvantmekanik, thermodynamics, Matematisk och allmän teoretisk fysik, Pseudo-scalar meson, Isospin Breaking, Chiral Perturbation Theory, Mathematical and general theoretical physics, classical mechanics, quantum mechanics, relativity, statistical physics, Weak Interaction, Strong Interaction, kvantfältteori, High energy interactions, Kärnfysik, Nuclear physics, klassisk mekanik, quantum field theory, cosmic rays, Kosmisk strålning, högenergi, Elementarpartikelfysik
pages
165 pages
publisher
KFS AB
defense location
Department of Theoretical Physics Lund University Sölvegatan 14A SE - 223 62 Lund, Sweden
defense date
2005-01-28 10:30
ISBN
91-628-6347-9
language
English
LU publication?
yes
id
deeb3a1d-eb2a-4c30-80e7-f7bd72041d31 (old id 544188)
date added to LUP
2007-09-04 13:48:46
date last changed
2016-09-19 08:45:03
@misc{deeb3a1d-eb2a-4c30-80e7-f7bd72041d31,
  abstract     = {The five different K -> 3 Pi and the three K -> 2 Pi decays are calculated in Chiral Perturbation Theory. The calculation is done using different approximations, to study whether this changes the result significantly. First the isospin approximation is used. Discrepancies are then found between theory and experiment. Further calculations without the isospin approximation are then done to see if this solves the found problems. The purpose is two-fold. To test the validity of Chiral Perturbation Theory and to fix some of the unknown parameters in the theory.},
  author       = {Borg, Fredrik},
  isbn         = {91-628-6347-9},
  keyword      = {Elementary particle physics,termodynamik,statistisk fysik,gravitation,relativitet,kvantmekanik,thermodynamics,Matematisk och allmän teoretisk fysik,Pseudo-scalar meson,Isospin Breaking,Chiral Perturbation Theory,Mathematical and general theoretical physics,classical mechanics,quantum mechanics,relativity,statistical physics,Weak Interaction,Strong Interaction,kvantfältteori,High energy interactions,Kärnfysik,Nuclear physics,klassisk mekanik,quantum field theory,cosmic rays,Kosmisk strålning,högenergi,Elementarpartikelfysik},
  language     = {eng},
  pages        = {165},
  publisher    = {ARRAY(0xa359f88)},
  title        = {Isospin Breaking in Kaon Decays to Pions},
  year         = {2005},
}