Results 101 to 110 of about 8,315 (193)
Soft Yukawa couplings in supersymmetric theories [PDF]
The possibility of radiatively generated fermion masses arising from chiral flavor violation in soft supersymmetry-breaking terms is explored. Vacuum stability constraints are considered in various classes of models, and allow in principle all of the ...
't Hooft+99 more
core +3 more sources
Minimal R+R2 supergravity models of inflation coupled to matter
The supersymmetric extension of “Starobinsky” R+αR2 models of inflation is particularly simple in the “new minimal” formalism of supergravity, where the inflaton has no scalar superpartners.
Sergio Ferrara, Massimo Porrati
doaj +1 more source
Grand Unification in Higher Dimensions [PDF]
We have recently proposed an alternative picture for the physics at the scale of gauge coupling unification, where the unified symmetry is realized in higher dimensions but is broken locally by a symmetry breaking defect.
Ahmed+57 more
core +2 more sources
Komar charge of N $$ \mathcal{N} $$ = 2 supergravity and its superspace generalization
We find the defining equations for a Killing vector and its superpartner (called the generalized Killing spinor) and use them to construct the generalized Komar superform of minimal N $$ \mathcal{N} $$ = 2 d = 4 supergravity using the superspace ...
Igor Bandos+2 more
doaj +1 more source
τ̃ searches at future e+e− colliders [PDF]
The direct pair-production of the superpartner of the τ-lepton, the τ̃, is one of the most interesting channels to search for SUSY in: the τ̃ is likely to be the lightest of the scalar leptons, and is one of the most experimentally chalanging ones.
Berggren Mikael+2 more
doaj +1 more source
N=4 Super Yang-Mills Low-Energy Effective Action at Three and Four Loops
We investigate the low-energy effective action in N=4 super Yang-Mills theory with gauge group SU(n) spontaneously broken down to its maximal torus. Using harmonic superspace technique we prove an absence of any three- and four-loop corrections to non ...
Buchbinder, I. L., Petrov, A. Yu.
core +1 more source
Heavy superpartners with less tuning from hidden sector renormalisation [PDF]
In supersymmetric extensions of the Standard Model, superpartner masses consistent with collider bounds typically introduce significant tuning of the electroweak scale.
Hardy, Edward
core +2 more sources
Inflation from supersymmetry breaking
We explore the possibility that inflation is driven by supersymmetry breaking with the superpartner of the goldstino (sgoldstino) playing the role of the inflaton.
I. Antoniadis+3 more
doaj +1 more source
Comments on nonlinear sigma models coupled to supergravity
N=1, D=4 nonlinear sigma models, parametrized by chiral superfields, usually describe Kählerian geometries, provided that Einstein frame supergravity is used.
Sergio Ferrara, Massimo Porrati
doaj
Supersymmetry and the positron excess in cosmic rays [PDF]
Recently the HEAT balloon experiment has confirmed an excess of high-energy positrons in cosmic rays. They could come from annihilation of dark matter in the galactic halo.
A.J. Tylka+24 more
core +2 more sources