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Meson Decay with Isospin Breaking At Two Loops.

Ghorbani, Karim LU (2007)
Abstract
In all calculations done in this thesis, the evaluation of higher order quantum corrections has been central. In the first paper included in this thesis we have investigated the effects of finite volume meson propagators for quark-antiquark vacuum expectation value at two-loop level. In the second paper we have improved the earlier calculations for the eta decay to three pions by implementing two-loop quantum corrections. The low energy constants of order p6 are estimated by means of a resonance chiral Lagrangian. In addition, the experimental charged decay rate leads to the determination for the isospin breaking quantities. Finally, we have studied the isospin breaking effects on the vector and scalar form-factor of semi-leptonic decays.... (More)
In all calculations done in this thesis, the evaluation of higher order quantum corrections has been central. In the first paper included in this thesis we have investigated the effects of finite volume meson propagators for quark-antiquark vacuum expectation value at two-loop level. In the second paper we have improved the earlier calculations for the eta decay to three pions by implementing two-loop quantum corrections. The low energy constants of order p6 are estimated by means of a resonance chiral Lagrangian. In addition, the experimental charged decay rate leads to the determination for the isospin breaking quantities. Finally, we have studied the isospin breaking effects on the vector and scalar form-factor of semi-leptonic decays. Semi-leptonic kaon decays, both rare and weak semi-leptonic decays. Semi-leptonic kaon decays provide a rich laboratory to find the CKM matrix element Vus and the possible new physics beyond the Standard Model in flavor sector. (Less)
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author
supervisor
opponent
  • Professor Colangelo, Gilberto, Bern University
organization
publishing date
type
Thesis
publication status
published
subject
keywords
kvantfältteori, Elementarpartikelfysik, quantum field theory, Elementary particle physics, Naturvetenskap, Natural science, hadron physics, standard model, chiral Lagrangian, quantum correction
pages
137 pages
publisher
Department of Theoretical Physics, Lund University
defense location
Lund University Theoretical physics department Sölvegatan 14A Lecture Hall F
defense date
2007-11-23 10:15:00
ISBN
978-91-628-7298-4
language
English
LU publication?
yes
id
ff6d7e4e-93fd-45f7-b349-de499c60b842 (old id 599178)
date added to LUP
2016-04-04 11:50:38
date last changed
2018-11-21 21:07:34
@phdthesis{ff6d7e4e-93fd-45f7-b349-de499c60b842,
  abstract     = {{In all calculations done in this thesis, the evaluation of higher order quantum corrections has been central. In the first paper included in this thesis we have investigated the effects of finite volume meson propagators for quark-antiquark vacuum expectation value at two-loop level. In the second paper we have improved the earlier calculations for the eta decay to three pions by implementing two-loop quantum corrections. The low energy constants of order p6 are estimated by means of a resonance chiral Lagrangian. In addition, the experimental charged decay rate leads to the determination for the isospin breaking quantities. Finally, we have studied the isospin breaking effects on the vector and scalar form-factor of semi-leptonic decays. Semi-leptonic kaon decays, both rare and weak semi-leptonic decays. Semi-leptonic kaon decays provide a rich laboratory to find the CKM matrix element Vus and the possible new physics beyond the Standard Model in flavor sector.}},
  author       = {{Ghorbani, Karim}},
  isbn         = {{978-91-628-7298-4}},
  keywords     = {{kvantfältteori; Elementarpartikelfysik; quantum field theory; Elementary particle physics; Naturvetenskap; Natural science; hadron physics; standard model; chiral Lagrangian; quantum correction}},
  language     = {{eng}},
  publisher    = {{Department of Theoretical Physics, Lund University}},
  school       = {{Lund University}},
  title        = {{Meson Decay with Isospin Breaking At Two Loops.}},
  year         = {{2007}},
}