Meson Decay with Isospin Breaking At Two Loops.
(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 quarkantiquark vacuum expectation value at twoloop level. In the second paper we have improved the earlier calculations for the eta decay to three pions by implementing twoloop 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 formfactor of semileptonic 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 quarkantiquark vacuum expectation value at twoloop level. In the second paper we have improved the earlier calculations for the eta decay to three pions by implementing twoloop 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 formfactor of semileptonic decays. Semileptonic kaon decays, both rare and weak semileptonic decays. Semileptonic 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)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/599178
 author
 Ghorbani, Karim ^{LU}
 supervisor

 Johan Bijnens ^{LU}
 opponent

 Professor Colangelo, Gilberto, Bern University
 organization
 publishing date
 2007
 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
 20071123 10:15:00
 ISBN
 9789162872984
 language
 English
 LU publication?
 yes
 id
 ff6d7e4e93fd45f7b349de499c60b842 (old id 599178)
 date added to LUP
 20160404 11:50:38
 date last changed
 20181121 21:07:34
@phdthesis{ff6d7e4e93fd45f7b349de499c60b842, 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 quarkantiquark vacuum expectation value at twoloop level. In the second paper we have improved the earlier calculations for the eta decay to three pions by implementing twoloop 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 formfactor of semileptonic decays. Semileptonic kaon decays, both rare and weak semileptonic decays. Semileptonic 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 = {9789162872984}, language = {eng}, publisher = {Department of Theoretical Physics, Lund University}, school = {Lund University}, title = {Meson Decay with Isospin Breaking At Two Loops.}, year = {2007}, }