scholarly journals Effective Yukawa couplings and flavor-changing Higgs boson decays at linear colliders

2011 ◽  
Vol 83 (7) ◽  
Author(s):  
E. Gabrielli ◽  
B. Mele
Keyword(s):  
Higgs Boson ◽  
Yukawa Couplings ◽  
Flavor Changing ◽  
Linear Colliders

scholarly journals B-L extension of the SM -Z′and heavy Higgs boson analysis at futuree+e−linear colliders ILC and CLIC

2018 ◽  
Vol 1078 ◽  
pp. 012018
Author(s):  
F Ramírez-Sánchez ◽  
A Gutierrez-Rodríguez ◽  
M A Hernández-Ruiz
Keyword(s):  
Higgs Boson ◽  
Linear Colliders ◽  
Heavy Higgs Boson

scholarly journals Z′ and Higgs Boson Production Associated with a Top Quark Pair as a Probe of the U(1)B-L Model at e+e- Colliders

2018 ◽  
Vol 2018 ◽  
pp. 1-16 ◽  
Author(s):  
F. Ramírez-Sánhez ◽  
A. Gutiérrez-Rodríguez ◽  
Alejandro González-Sánchez ◽  
M. A. Hernández-Ruíz
Keyword(s):  
Higgs Boson ◽  
Cross Section ◽  
Top Quark ◽  
Higgs Bosons ◽  
Precision Measurements ◽  
Boson Production ◽  
Resonance Effects ◽  
Linear Colliders ◽  
Analytical Formulas ◽  
Near Future

We study the production sensitivity of Higgs bosons h and H, in relation to the possible existence of Z′ boson and a top quark pair at the energy scales that will be reached in the near future at projected e+e- linear colliders. We focus on the resonance and no-resonance effects of the annihilation processes e+e-→(γ,Z,Z′)→tt-h and e+e-→(γ,Z,Z′)→tt-H. Furthermore, we develop and present novel analytical formulas to assess the total cross section involved in the production of Higgs bosons. We find that the possibility of performing precision measurements for the Higgs bosons h and H and for the Z′ boson is very promising at future e+e- linear colliders.

scholarly journals FLAVOR SYMMETRY AND VACUUM ALIGNED MASS TEXTURES

2007 ◽  
Vol 16 (05) ◽  
pp. 1427-1436 ◽  
Author(s):  
SATORU KANEKO ◽  
HIDEYUKI SAWANAKA ◽  
TAKAYA SHINGAI ◽  
MORIMITSU TANIMOTO ◽  
KOICHI YOSHIOKA
Keyword(s):  
Scalar Potential ◽  
Vacuum Expectation ◽  
Vacuum Expectation Value ◽  
Flavor Symmetry ◽  
Yukawa Couplings ◽  
Flavor Changing ◽  
Symmetry Approach ◽  
Mass Matrices ◽  
Vanishing Elements ◽  
Higgs Fields

A texture-zeros is an approach to reduce the number of free parameters in Yukawa couplings and it is one of the most attractive ones. In our paper, we discuss the origin of zero-structure in texture-zeros by S3 flavor symmetry approach. Some of electroweak doublet Higgs fields have vanishing vacuum expectation value (VEV) which leads to vanishing elements in quark and lepton mass matrices. Then, the structure of supersymmetric scalar potential is analyzed and Higgs fields have non-trivial S3 charges. As a prediction of our paper, a lower bound of a MNS matrix element, Ue3 ≥ 0.04, is obtained. The suppression of flavor-changing neutral currents (FCNC) mediated by the Higgs fields is discussed and lower bounds of the Higgs masses are derived.

SEARCHING FOR AN INTERMEDIATE MASS HIGGS BOSON AT LARGE ENERGY e+e− LINEAR COLLIDERS

1986 ◽  
Vol 01 (09) ◽  
pp. 517-523 ◽  
Author(s):  
G. ALTARELLI ◽  
E. FRANCO
Keyword(s):  
Higgs Boson ◽  
Decay Mode ◽  
Large Energy ◽  
Intermediate Mass ◽  
Background Ratio ◽  
Linear Colliders ◽  
Experimental Resolution

Production and detection via its quark-antiquark decay mode of a Higgs boson with mass MW<mH<300 GeV in e+e− reactions with [Formula: see text] is studied. Contrary to the case of p-p large energy colliders we find that for realistic values of the experimental resolution the signal over background ratio is sufficient for detection in most cases.

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