scholarly journals Quark mass hierarchy and mixing via geometry of extra dimension with point interactions

2013 ◽  
Vol 2013 (2) ◽  
Author(s):  
Yukihiro Fujimoto ◽  
Tomoaki Nagasawa ◽  
Kenji Nishiwaki ◽  
Makoto Sakamoto
Keyword(s):  
Extra Dimension ◽  
Quark Mass ◽  
Mass Hierarchy ◽  
Point Interactions

scholarly journals Dynamical generation of quark/lepton mass hierarchy in an extra dimension

2019 ◽  
Vol 2019 (12) ◽  
Author(s):  
Yukihiro Fujimoto ◽  
Kouhei Hasegawa ◽  
Kenji Nishiwaki ◽  
Makoto Sakamoto ◽  
Kazunori Takenaga ◽  
...  
Keyword(s):  
Extra Dimension ◽  
Vacuum Expectation ◽  
Vacuum Expectation Value ◽  
Casimir Energy ◽  
Mass Hierarchy ◽  
Point Interactions ◽  
Quark Masses ◽  
Dynamical Generation ◽  
Charged Leptons ◽  
Experimental Values

Abstract We show that the observed quark/lepton mass hierarchy can be realized dynamically on an interval extra dimension with point interactions. In our model, the positions of the point interactions play a crucial role in controlling the quark/lepton mass hierarchy and are determined by the minimization of the Casimir energy. By use of the exact extra-dimensional coordinate-dependent vacuum expectation value of a gauge-singlet scalar, we find that there is a parameter set, where the positions of the point interactions are stabilized and fixed, which can reproduce the experimental values of the quark masses precisely enough, while the charged lepton part is less relevant. We also show that possible mixings among the charged leptons will improve the situation significantly.

scholarly journals QUARK MASS HIERARCHY AND CP VIOLATION IN LOW ENERGY SUPERSYMMETRY

1996 ◽  
Vol 11 (23) ◽  
pp. 4307-4319 ◽  
Author(s):  
CHUN LIU
Keyword(s):  
Cp Violation ◽  
Quark Mass ◽  
Neutral Current ◽  
Vacuum Expectation ◽  
Discrete Symmetry ◽  
Low Energy ◽  
Tree Level ◽  
Mass Hierarchy ◽  
Family Symmetry ◽  
Flavor Changing

A pattern of quark mass hierarchy and CP violation within the framework of low energy supersymmetry is described. By assuming some discrete symmetry among the three families, the quarks of the third family obtain masses at tree level. The second family obtains masses radiatively at one-loop level due to the soft breaking of the family symmetry. At this level, the first family remains massless by some degeneracy conditions of the squarks. As a result of R parity violation, the sneutrino vacuum expectation values are nonvanishing. CP violation occurs through the superweak sneutrino exchange. This picture is consistent with the experiments on the flavor-changing neutral current.

scholarly journals Realization of lepton masses and mixing angles from point interactions in an extra dimension

2014 ◽  
Vol 2014 (10) ◽  
Author(s):  
Yukihiro Fujimoto ◽  
Kenji Nishiwaki ◽  
Makoto Sakamoto ◽  
Ryo Takahashi
Keyword(s):  
Extra Dimension ◽  
Point Interactions ◽  
Mixing Angles

scholarly journals Quark Mass Hierarchy, FCNC and CP Violation in a Seesaw Model

1999 ◽  
Vol 101 (3) ◽  
pp. 671-706 ◽  
Author(s):  
Yuichiro Kiyo ◽  
Takuya Morozumi ◽  
Paulo Parada ◽  
Margarida N. Rebelo ◽  
Morimitsu Tanimoto
Keyword(s):  
Cp Violation ◽  
Quark Mass ◽  
Mass Hierarchy ◽  
Seesaw Model

scholarly journals Quark mass hierarchy and flavor mixing puzzles

2014 ◽  
Vol 29 (30) ◽  
pp. 1430067 ◽  
Author(s):  
Zhi-Zhong Xing
Keyword(s):  
Cp Violation ◽  
Electric Charge ◽  
Particle Physics ◽  
Quark Mass ◽  
Mass Hierarchy ◽  
Quark Masses ◽  
Lepton Flavor ◽  
Quark Flavor ◽  
Flavor Mixing ◽  
Highly Correlated

The fact that quarks of the same electric charge possess a mass hierarchy is a big puzzle in particle physics, and it must be highly correlated with the hierarchy of quark flavor mixing. This chapter is intended to provide a brief description of some important issues regarding quark masses, flavor mixing and CP-violation. A comparison between the salient features of quark and lepton flavor mixing structures is also made.

Up and down quark mass hierarchy in an invisible axion model

1989 ◽  
Vol 225 (1-2) ◽  
pp. 173-175 ◽  
Author(s):  
Xiao-Gang He ◽  
B.H. McKellar
Keyword(s):  
Quark Mass ◽  
Mass Hierarchy ◽  
Down Quark ◽  
Invisible Axion

scholarly journals Quark mass hierarchy in 3-3-1 models

2012 ◽  
Vol 86 (2) ◽  
Author(s):  
C. Alvarado ◽  
R. Martínez ◽  
F. Ochoa
Keyword(s):  
Quark Mass ◽  
Mass Hierarchy
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