RGE properties of 2HDM in relation to data on B>Dtu
(2014) FYTK01 20132Theoretical Particle Physics  Undergoing reorganization
Department of Astronomy and Theoretical Physics  Undergoing reorganization
 Abstract
 In this thesis we investigate the properties of a specific two Higgs Doublet Model (2HDM) that can be used to explain the data on B>Dtu and B>D*tu, which deviate from the Standard Model (SM) by 3.4 sigma. The 2HDM is the simplest extension of the Standard model scalar sector. Phenomenologically it is very rich with 4 new Higgs bosons: 2 neutral and an electromagnetic charged pair. The 2HDMs exhibits treelevel flavor changing neutral currents (FCNC) which are constrained by experiments and therefore need to be suppressed in the model. These FCNC depends on the masses of the Higgs bosons and the couplings in the Yukawa sector. We investigate the possible mass spectrum of the model by requiring vacuum stability, treelevel unitarity and... (More)
 In this thesis we investigate the properties of a specific two Higgs Doublet Model (2HDM) that can be used to explain the data on B>Dtu and B>D*tu, which deviate from the Standard Model (SM) by 3.4 sigma. The 2HDM is the simplest extension of the Standard model scalar sector. Phenomenologically it is very rich with 4 new Higgs bosons: 2 neutral and an electromagnetic charged pair. The 2HDMs exhibits treelevel flavor changing neutral currents (FCNC) which are constrained by experiments and therefore need to be suppressed in the model. These FCNC depends on the masses of the Higgs bosons and the couplings in the Yukawa sector. We investigate the possible mass spectrum of the model by requiring vacuum stability, treelevel unitarity and perturbativity, as well as making sure the model is within limits of the experimental electroweak precision tests. Then we use renormalization group equations (RGEs) to evolve the Yukawa couplings to see when they reach the limits set by FCNC. (Less)
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/studentpapers/record/4279775
 author
 Oredsson, Joel ^{LU}
 supervisor

 Johan Rathsman ^{LU}
 organization
 course
 FYTK01 20132
 year
 2014
 type
 M2  Bachelor Degree
 subject
 keywords
 particle physics, high energy physics, B meson, two Higgs doublet model, 2HDM, Higgs, RGE, BSM
 language
 English
 id
 4279775
 date added to LUP
 20140202 22:50:19
 date last changed
 20171006 17:05:00
@misc{4279775, abstract = {{In this thesis we investigate the properties of a specific two Higgs Doublet Model (2HDM) that can be used to explain the data on B>Dtu and B>D*tu, which deviate from the Standard Model (SM) by 3.4 sigma. The 2HDM is the simplest extension of the Standard model scalar sector. Phenomenologically it is very rich with 4 new Higgs bosons: 2 neutral and an electromagnetic charged pair. The 2HDMs exhibits treelevel flavor changing neutral currents (FCNC) which are constrained by experiments and therefore need to be suppressed in the model. These FCNC depends on the masses of the Higgs bosons and the couplings in the Yukawa sector. We investigate the possible mass spectrum of the model by requiring vacuum stability, treelevel unitarity and perturbativity, as well as making sure the model is within limits of the experimental electroweak precision tests. Then we use renormalization group equations (RGEs) to evolve the Yukawa couplings to see when they reach the limits set by FCNC.}}, author = {{Oredsson, Joel}}, language = {{eng}}, note = {{Student Paper}}, title = {{RGE properties of 2HDM in relation to data on B>Dtu}}, year = {{2014}}, }