UPPER BOUND ON THE MASS OF LIGHTEST HIGGS BOSON IN THE SUPERSYMMETRIC SINGLET MAJORAN MODEL

1995 ◽  
Vol 10 (21) ◽  
pp. 1533-1542 ◽  
Author(s):  
P.N. PANDITA
Keyword(s):  
Higgs Boson ◽  
Standard Model ◽  
Upper Bound ◽  
Minimal Model ◽  
Vacuum Expectation ◽  
Lepton Number ◽  
Boson Mass ◽  
Tree Level ◽  
Higgs Boson Mass ◽  
Expectation Values

We calculate an upper bound on the lightest Higgs boson mass in the supersymmetric singlet majoran model containing SU(2)×U(1) singlet right-handed neutrino fields and a chiral singlet having two units of lepton number. We show that although the singlet vacuum expectation values and supersymmetry breaking masses do not decouple from the upper bound, even at the tree level, their effect is small, thereby reducing the bound to the corresponding bound in the minimal supersymmetric standard model. Radiative corrections to the bound are similar to those in the minimal model. We also show that the couplings of the lightest Higgs boson to the majorans are suppressed in this model.

Upper Bound on the Higgs-Boson Mass in the Standard Model

1988 ◽  
Vol 61 (6) ◽  
pp. 678-681 ◽  
Author(s):  
Julius Kuti ◽  
Lee Lin ◽  
Yue Shen
Keyword(s):  
Higgs Boson ◽  
Standard Model ◽  
Upper Bound ◽  
Boson Mass ◽  
Higgs Boson Mass ◽  
The Standard Model

scholarly journals AN UPPER BOUND ON THE HIGGS BOSON MASS FROM A POSITIVITY CONDITION ON THE MASS MATRIX

1998 ◽  
Vol 13 (10) ◽  
pp. 753-757 ◽  
Author(s):  
ALI AL-NAGHMOUSH ◽  
MURAT ÖZER ◽  
M. O. TAHA
Keyword(s):  
Higgs Boson ◽  
Upper Bound ◽  
Top Quark ◽  
Mass Matrix ◽  
Vacuum Expectation ◽  
Vacuum Expectation Value ◽  
Boson Mass ◽  
Higgs Boson Mass ◽  
Positivity Condition ◽  
The One

We impose the condition that the eigenvalues of the mass matrix in the shifted Lagrangian density be positive at ϕ=ϕ0, the vacuum expectation value of the scalar field. Using the one-loop effective potential of the standard model, this condition leads to an upper bound on the Higgs boson mass m H :m H <230 GeV, for a top quark mass of 175 GeV.

scholarly journals Sphaleron transitions in the minimal standard model and the upper bound for the Higgs boson mass

1996 ◽  
Vol 53 (6) ◽  
pp. 3366-3391 ◽  
Author(s):  
Dmitri Diakonov ◽  
Maxim Polyakov ◽  
Peter Sieber ◽  
Jörg Schaldach ◽  
Klaus Goeke
Keyword(s):  
Higgs Boson ◽  
Standard Model ◽  
Upper Bound ◽  
Boson Mass ◽  
Higgs Boson Mass ◽  
Minimal Standard

scholarly journals Standard Model Effective Potential from Trace Anomalies

2018 ◽  
Vol 2018 ◽  
pp. 1-8
Author(s):  
Renata Jora
Keyword(s):  
Higgs Boson ◽  
Standard Model ◽  
Effective Potential ◽  
Sigma Model ◽  
Low Energy ◽  
Boson Mass ◽  
Linear Sigma Model ◽  
Tree Level ◽  
Higgs Boson Mass ◽  
Quantum Level

By analogy with the low energy QCD effective linear sigma model, we construct a standard model effective potential based entirely on the requirement that the tree level and quantum level trace anomalies must be satisfied. We discuss a particular realization of this potential in connection with the Higgs boson mass and Higgs boson effective couplings to two photons and two gluons. We find that this kind of potential may describe well the known phenomenology of the Higgs boson.

scholarly journals The Nonminimal Supersymmetric Standard Model at Large tan β

1997 ◽  
Vol 12 (13) ◽  
pp. 2321-2341 ◽  
Author(s):  
B. Ananthanarayan ◽  
P. N. Pandita
Keyword(s):  
Higgs Boson ◽  
Standard Model ◽  
Supersymmetric Standard Model ◽  
Vacuum Expectation ◽  
Vacuum Expectation Value ◽  
Boson Mass ◽  
Particle Spectrum ◽  
Neutral Higgs Boson ◽  
Expectation Values ◽  
Yukawa Couplings

We present a comprehensive analysis of the Nonminimal Supersymmetric Standard Model (NMSSM) for large values of tan β, the ratio of the vacuum expectation values of the two Higgs doublets, which arise when we impose the constraint of the unification of Yukawa couplings in the model. In this limit, we show that the vacuum expectation value of the singlet is forced to be large, of the order of 10 TeV. The singlet decouples from the lightest CP-even neutral Higgs boson and the neutralinos. We compare our results with the corresponding particle spectrum of the Minimal Supersymmetric Standard Model in the same limit. With the exception of the lightest Higgs boson, the particle spectrum in the model turns out to be heavy. The Higgs boson mass, after the inclusion of radiative corrections, is found to be in the neighborhood of ~ 130 GeV.

scholarly journals Search for dark photons in Higgs boson production via vector boson fusion in proton-proton collisions at $$ \sqrt{s} $$ = 13 TeV

2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
A. M. Sirunyan ◽  
◽  
A. Tumasyan ◽  
W. Adam ◽  
T. Bergauer ◽  
...  
Keyword(s):  
Higgs Boson ◽  
Standard Model ◽  
Confidence Level ◽  
Branching Fraction ◽  
Vector Boson ◽  
Boson Mass ◽  
Higgs Boson Mass ◽  
Vector Boson Fusion ◽  
Upper Limit ◽  
The Standard Model

Abstract A search is presented for a Higgs boson that is produced via vector boson fusion and that decays to an undetected particle and an isolated photon. The search is performed by the CMS collaboration at the LHC, using a data set corresponding to an integrated luminosity of 130 fb−1, recorded at a center-of-mass energy of 13 TeV in 2016–2018. No significant excess of events above the expectation from the standard model background is found. The results are interpreted in the context of a theoretical model in which the undetected particle is a massless dark photon. An upper limit is set on the product of the cross section for production via vector boson fusion and the branching fraction for such a Higgs boson decay, as a function of the Higgs boson mass. For a Higgs boson mass of 125 GeV, assuming the standard model production rates, the observed (expected) 95% confidence level upper limit on the branching fraction is 3.5 (2.8)%. This is the first search for such decays in the vector boson fusion channel. Combination with a previous search for Higgs bosons produced in association with a Z boson results in an observed (expected) upper limit on the branching fraction of 2.9 (2.1)% at 95% confidence level.

scholarly journals Effective SU(2)L⊗U(1) Theory and the Higgs Boson Mass

1997 ◽  
Vol 12 (21) ◽  
pp. 1531-1535 ◽  
Author(s):  
Zhen Yun Fang ◽  
G. López Castro ◽  
J. Pestieau ◽  
J. L. M. Lucio
Keyword(s):  
Higgs Boson ◽  
Stability Criterion ◽  
Vacuum Expectation ◽  
Vacuum Expectation Value ◽  
Boson Mass ◽  
Higgs Boson Mass ◽  
Electroweak Theory ◽  
Boson Field ◽  
Expectation Value ◽  
The Stability

We assume the stability of the vacuum expectation value of the Higgs boson field under radiative corrections in the context of the standard electroweak theory. We find that this theory behaves as a good effective model already at cutoff energy scales as low as 0.7 TeV. This stability criterion allows us to predict mH=318±13 GeV for the Higgs boson mass.

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