Results 51 to 60 of about 1,542 (161)
Unitarity constraints on large multiplets of arbitrary gauge groups
Nuclear Physics BWe impose partial-wave unitarity on 2→2 tree-level scattering processes to derive constraints on the dimensions of large scalar and fermionic multiplets of arbitrary gauge groups.
André Milagre, Luís Lavoura
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Leptoquarks in oblique corrections and Higgs signal strength: status and prospects
Journal of High Energy Physics, 2020 Leptoquarks (LQs) are predicted within Grand Unified Theories and are well motivated by the current flavor anomalies. In this article we investigate the impact of scalar LQs on Higgs decays and oblique corrections as complementary observables in the ...
Andreas Crivellin +2 more
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Grand Unified Theories without the Desert [PDF]
Physical Review Letters, 2000 We present a Grand Unified Theory (GUT) that has GUT fields with masses of the order of a TeV, but at the same time preserves (at the one-loop level) the success of gauge-coupling unification of the MSSM and the smallness of proton decay operators.
openaire +3 more sources
Fractionalized topological defects in optical lattices
New Journal of Physics, 2015 Topological objects are interesting topics in various fields of physics ranging from condensed matter physics to the grand unified and superstring theories. Among those, ultracold atoms provide a playground to study the complex topological objects.
Xing-Hai Zhang +3 more
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Compressed and Split Spectra in Minimal SUSY SO(10)
Frontiers in Physics, 2014 The non-observation of supersymmetric signatures in searches at the Large Hadron Collider strongly constrains minimal supersymmetric models like the CMSSM.
Frank Franz Deppisch +2 more
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Finite Theories predictions vs. the Discovery of a Higgs-like Boson at the LHC
EPJ Web of Conferences, 2014 Finite Unified Theories (FUTs) have proven very successful so far. In particular, they predicted the top quark mass one and half years before its experimental discovery, while around five years ago confronting their predictions with the values of the top
Heinemeyer Sven +2 more
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Gauge coupling unification without leptoquarks
Physics Letters B, 2017 We propose an interpretation of the gauge coupling unification scale which is not related to any new particle threshold. We revisit Grand Unified Theories and show that it is possible to completely eliminate the scalar as well as vector leptoquarks from ...
Georgios K. Karananas +1 more
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750 GeV diphotons from a D3-brane
Nuclear Physics B, 2016 Motivated by the recently reported diphoton excess at 750 GeV observed by both CMS and ATLAS, we study string-based particle physics models which can accommodate this signal.
Jonathan J. Heckman
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Finite Unification: Theory and Predictions
Symmetry, Integrability and Geometry: Methods and Applications, 2010 All-loop Finite Unified Theories (FUTs) are very interesting N=1 supersymmetric Grand Unified Theories (GUTs) which not only realise an old field theoretic dream but also have a remarkable predictive power due to the required reduction of couplings.
Sven Heinemeyer +2 more
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Implications of a dark grand unification
Journal of High Energy PhysicsGiven that dark matter and normal matter are nontrivially unified in a grand unified theory, called dark grand unification, we derive novel residual theories at low energy explaining dark matter and neutrino mass.
Phung Van Dong, Do Thi Huong
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