scholarly journals Higgs funnel region of supersymmetric dark matter for smalltanβand renormalization group effects on pseudoscalar Higgs boson with scalar mass nonuniversality

2009 ◽  
Vol 79 (3) ◽  
Author(s):  
Utpal Chattopadhyay ◽  
Debottam Das
Keyword(s):  
Dark Matter ◽  
Renormalization Group ◽  
Higgs Boson ◽  
Scalar Mass ◽  
Group Effects

scholarly journals Renormalization group effects in dark matter interactions

2020 ◽  
Vol 2020 (3) ◽  
Author(s):  
Fady Bishara ◽  
Joachim Brod ◽  
Benjamin Grinstein ◽  
Jure Zupan
Keyword(s):  
Dark Matter ◽  
Renormalization Group ◽  
Group Effects

scholarly journals Another SMEFT story: Z′ facing new results on ε′/ε, ∆MK and K → $$ \pi \nu \overline{\nu} $$

2020 ◽  
Vol 2020 (12) ◽  
Author(s):  
Jason Aebischer ◽  
Andrzej J. Buras ◽  
Jacky Kumar
Keyword(s):  
Renormalization Group ◽  
Mass Difference ◽  
Branching Ratios ◽  
New Physics ◽  
Matrix Elements ◽  
Isospin Breaking ◽  
Left Handed ◽  
The Standard Model ◽  
First Time ◽  
Group Effects

Abstract Recently the RBC-UKQCD lattice QCD collaboration presented new results for the hadronic matrix elements relevant for the ratio ε′/ε in the Standard Model (SM) albeit with significant uncertainties. With the present knowledge of the Wilson coefficients and isospin breaking effects there is still a sizable room left for new physics (NP) contributions to ε′/ε which could both enhance or suppress this ratio to agree with the data. The new SM value for the K0 − $$ {\overline{K}}^0 $$ K ¯ 0 mass difference ∆MK from RBC-UKQCD is on the other hand by 2σ above the data hinting for NP required to suppress ∆MK. Simultaneously the most recent results for K+ → $$ {\pi}^{+}\nu \overline{\nu} $$ π + ν ν ¯ from NA62 and for KL → $$ {\pi}^0\nu \overline{\nu} $$ π 0 ν ν ¯ from KOTO still allow for significant NP contributions. We point out that the suppression of ∆MK by NP requires the presence of new CP-violating phases with interesting implications for K → $$ \pi \nu \overline{\nu} $$ πν ν ¯ , KS → μ+μ− and KL → π0ℓ+ℓ− decays. Considering a Z′-scenario within the SMEFT we analyze the dependence of all these observables on the size of NP still allowed by the data on ε′/ε. The hinted ∆MK anomaly together with the εK constraint implies in the presence of only left-handed (LH) or right-handed (RH) flavour-violating Z′ couplings strict correlation between K+ → $$ {\pi}^{+}\nu \overline{\nu} $$ π + ν ν ¯ and KL → $$ {\pi}^0\nu \overline{\nu} $$ π 0 ν ν ¯ branching ratios so that they are either simultaneously enhanced or suppressed relative to SM predictions. An anticorrelation can only be obtained in the presence of both LH and RH couplings. Interestingly, the NP QCD penguin scenario for ε′/ε is excluded by SMEFT renormalization group effects in εK so that NP effects in ε′/ε are governed by electroweak penguins. We also investigate for the first time whether the presence of a heavy Z′ with flavour violating couplings could generate through top Yukawa renormalization group effects FCNCs mediated by the SM Z-boson. The outcome turns out to be very interesting.

scholarly journals Connection of gamma rays, dark matter, and Higgs boson searches at the LHC

2012 ◽  
Vol 86 (7) ◽  
Author(s):  
J. D. Ruiz-Alvarez ◽  
C. A. de S. Pires ◽  
Farinaldo S. Queiroz ◽  
D. Restrepo ◽  
P. S. Rodrigues da Silva
Keyword(s):  
Dark Matter ◽  
Higgs Boson ◽  
Gamma Rays

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

Renormalization-group-improved unitarity bounds on the Higgs-boson and top-quark masses

1989 ◽  
Vol 40 (5) ◽  
pp. 1725-1729 ◽  
Author(s):  
W. Marciano ◽  
G. Valencia ◽  
S. Willenbrock
Keyword(s):  
Renormalization Group ◽  
Higgs Boson ◽  
Top Quark ◽  
Quark Masses

scholarly journals Constraining extended scalar sectors at the LHC and beyond

2018 ◽  
Vol 33 (10n11) ◽  
pp. 1830007 ◽  
Author(s):  
Agnieszka Ilnicka ◽  
Tania Robens ◽  
Tim Stefaniak
Keyword(s):  
Dark Matter ◽  
Higgs Boson ◽  
Standard Model ◽  
Parameter Space ◽  
Beyond The Standard Model ◽  
The Standard Model ◽  
Doublet Model ◽  
Inert Doublet Model ◽  
Scalar Sector ◽  
Scalar Singlet

We give a brief overview of beyond the Standard Model (BSM) theories with an extended scalar sector and their phenomenological status in the light of recent experimental results. We discuss the relevant theoretical and experimental constraints, and show their impact on the allowed parameter space of two specific models: the real scalar singlet extension of the Standard Model (SM) and the Inert Doublet Model. We emphasize the importance of the LHC measurements, both the direct searches for additional scalar bosons, as well as the precise measurements of properties of the Higgs boson of mass 125 GeV. We show the complementarity of these measurements to electroweak and dark matter observables.

scholarly journals Super-nonradiative states in fractal quantum systems

2019 ◽  
Vol 220 ◽  
pp. 02001
Author(s):  
Valeriy Abramov
Keyword(s):  
Dark Matter ◽  
Higgs Boson ◽  
Higgs Field ◽  
Majorana Neutrino ◽  
Quantum Systems ◽  
Rest Energy ◽  
Physical Fields

Theoretically the relationships of the main parameters of active nanoobjects with the Higgs boson and the Higgs field in a fractal quantum systems, super-nonradiative states of physical fields are investigated. The estimations of numbers, mass and rest energy of the neutrino (solar, electronic), the rest energy of Majorana neutrino, dark matter are obtained.

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