scholarly journals Higgs boson mass, neutrino masses and mixing and keV dark matter in an U(1) R − lepton number model

2014 ◽  
Vol 2014 (1) ◽  
Author(s):  
Sabyasachi Chakraborty ◽  
Sourov Roy
Keyword(s):  
Dark Matter ◽  
Higgs Boson ◽  
Lepton Number ◽  
Boson Mass ◽  
Neutrino Masses ◽  
Higgs Boson Mass

scholarly journals Gravitino dark matter with constraints from Higgs boson mass and sneutrino decays

2013 ◽  
Vol 2013 (3) ◽  
Author(s):  
Leszek Roszkowski ◽  
Sebastian Trojanowski ◽  
Krzysztof Turzyński ◽  
Karsten Jedamzik
Keyword(s):  
Dark Matter ◽  
Higgs Boson ◽  
Boson Mass ◽  
Higgs Boson Mass

scholarly journals High energy physics and cosmology at the unification frontier: Opportunities and challenges in the coming years

2018 ◽  
Vol 33 (20) ◽  
pp. 1830017 ◽  
Author(s):  
Pran Nath
Keyword(s):  
Dark Matter ◽  
Dark Energy ◽  
Higgs Boson ◽  
Standard Model ◽  
Particle Physics ◽  
High Energy Physics ◽  
High Energy ◽  
Boson Mass ◽  
Higgs Boson Mass ◽  
Energy Physics

We give here an overview of recent developments in high energy physics and cosmology and their interconnections that relate to unification, and discuss prospects for the future. Thus there are currently three empirical data that point to supersymmetry as an underlying symmetry of particle physics: the unification of gauge couplings within supersymmetry, the fact that nature respects the supersymmetry prediction that the Higgs boson mass lie below 130 GeV, and vacuum stability up to the Planck scale with a Higgs boson mass at [Formula: see text][Formula: see text]125 GeV while the Standard Model does not do that. Coupled with the fact that supersymmetry solves the big hierarchy problem related to the quadratic divergence to the Higgs boson mass square along with the fact that there is no alternative paradigm that allows us to extrapolate physics from the electroweak scale to the grand unification scale consistent with experiment, supersymmetry remains a compelling framework for new physics beyond the Standard Model. The large loop correction to the Higgs boson mass in supersymmetry to lift the tree mass to the experimentally observable value, indicates a larger value of the scale of weak scale supersymmetry, making the observation of sparticles more challenging but still within reach at the LHC for the lightest ones. Recent analyses show that a high energy LHC (HE-LHC) operating at 27 TeV running at its optimal luminosity of [Formula: see text] can reduce the discovery period by several years relative to HL-LHC and significantly extend the reach in parameter space of models. In the coming years several experiments related to neutrino physics, searches for supersymmetry, on dark matter and dark energy will have direct impact on the unification frontier. Thus the discovery of sparticles will establish supersymmetry as a fundamental symmetry of nature and also lend direct support for strings. Further, discovery of sparticles associated with missing energy will constitute discovery of dark matter with LSP being the dark matter. On the cosmology front more accurate measurement of the equation of state, i.e. [Formula: see text], will shed light on the nature of dark energy. Specifically, [Formula: see text] will likely indicate the existence of a dynamical field, possibly quintessence, responsible for dark energy and [Formula: see text] would indicate an entirely new sector of physics. Further, more precise measurements of the ratio [Formula: see text] of tensor to scalar power spectrum, of the scalar and tensor spectral indices [Formula: see text] and [Formula: see text] and of non-Gaussianity will hopefully allow us to realize a Standard Model of inflation. These results will be a guide to further model building that incorporates unification of particle physics and cosmology.

scholarly journals Supersymmetric unparticle effects on Higgs boson mass and dark matter

2007 ◽  
Vol 656 (1-3) ◽  
pp. 91-95 ◽  
Author(s):  
N.G. Deshpande ◽  
Xiao-Gang He ◽  
Jing Jiang
Keyword(s):  
Dark Matter ◽  
Higgs Boson ◽  
Boson Mass ◽  
Higgs Boson Mass

scholarly journals Gravitino Dark Matter with Constraints from Higgs Boson Mass and Sneutrino Decays

2013 ◽  
Vol 44 (11) ◽  
pp. 2367
Author(s):  
L. Roszkowski ◽  
S. Trojanowski ◽  
K. Turzyński ◽  
K. Jedamzik
Keyword(s):  
Dark Matter ◽  
Higgs Boson ◽  
Boson Mass ◽  
Higgs Boson Mass

scholarly journals Higgs boson mass and complex sneutrino dark matter in the supersymmetric inverse seesaw models

2014 ◽  
Vol 2014 (2) ◽  
Author(s):  
Jun Guo ◽  
Zhaofeng Kang ◽  
Tianjun Li ◽  
Yandong Liu
Keyword(s):  
Dark Matter ◽  
Higgs Boson ◽  
Boson Mass ◽  
Higgs Boson Mass

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.

scholarly journals Higgs boson mass predictions in supergravity unification, recent LHC-7 results, and dark matter

2012 ◽  
Vol 85 (7) ◽  
Author(s):  
Sujeet Akula ◽  
Baris Altunkaynak ◽  
Daniel Feldman ◽  
Pran Nath ◽  
Gregory Peim
Keyword(s):  
Dark Matter ◽  
Higgs Boson ◽  
Boson Mass ◽  
Higgs Boson Mass

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.

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