Journal ArticleDOI
A natural solution to the μ-problem in supergravity theories
Gian F. Giudice,Antonio Masiero +1 more
Reads0
Chats0
TLDR
In this article, a natural way to avoid the introduction by hand of a small mass scale μ in the observable sector of N = 1 supergravity theories is proposed, where all low energy mass parameters arise only from supergravity breaking and SU (2) × U (1) is left unbroken in the limit of exact supersymmetry.About:
This article is published in Physics Letters B.The article was published on 1988-05-26. It has received 856 citations till now. The article focuses on the topics: Higher-dimensional supergravity & Supergravity.read more
Citations
More filters
Journal ArticleDOI
Particle physics models of inflation and the cosmological density perturbation
David H. Lyth,Antonio Riotto +1 more
TL;DR: A review of particle-theory models of inflation, and their predictions for the primordial density perturbation that is thought to be the origin of structure in the Universe is given in this paper.
Journal ArticleDOI
Out of this world supersymmetry breaking
TL;DR: In this article, it was shown that supersymmetry breaking necessarily generates at one loop a scalar and gaugino mass as a consequence of the super-Weyl anomaly.
Journal ArticleDOI
Theories with Gauge-Mediated Supersymmetry Breaking
TL;DR: Theoretically, these theories allow for a natural suppression of flavour violations in the supersymmetric sector and have very distinctive phenomenological features as discussed by the authors, and the experimental implications of these theories have been discussed.
Journal ArticleDOI
Supersymmetric unification without low energy supersymmetry and signatures for fine-tuning at the LHC
TL;DR: The cosmological constant problem is a failure of naturalness and suggests that a fine-tuning mechanism is at work as discussed by the authors, which may also address the hierarchy problem in string theory.
Journal ArticleDOI
The Next-to-Minimal Supersymmetric Standard Model
TL;DR: In this paper, the theoretical and phenomenological aspects of the Next-to-Minimal Supersymmetric Standard Model (NMSSM) were reviewed, including the Higgs sector including radiative corrections and the 2-loop β -functions for all parameters of the general NMSSM.
References
More filters
Journal ArticleDOI
CP Conservation in the Presence of Pseudoparticles
R.D. Peccei,Helen R. Quinn +1 more
TL;DR: In this paper, the authors give an explanation of the conservation of strong interactions which includes the effects of pseudoparticles, and they find it is a natural result for any theory where at least one flavor of fermion acquires its mass through a Yukawa coupling to a scalar field which has nonvanishing vacuum expectation value.
Journal ArticleDOI
A new light boson
TL;DR: In this article, it was pointed out that a global U(1) symmetry, introduced in order to preserve the parity and time-reversal invariance of strong interactions despite the effects of instantons, would lead to a neutral pseudoscalar boson, the "axion", with mass roughly of order 100 keV to 1 MeV.
Journal ArticleDOI
Cosmology of the invisible axion
TL;DR: In this article, the authors identify a new cosmological problem for models which solve the strong CP puzzle with an invisible axion, unrelated to the domain wall problem, and identify the energy density stored in the oscillations of the classical axion field does not dissipate rapidly; it exceeds the critical density needed to close the universe unless fa ⩽ 1012GeV wherefa is the axion decay constant.
Journal ArticleDOI
The Not So Harmless Axion
Michael Dine,Willy Fischler +1 more
TL;DR: In this paper, an upper bound on the axion decay constant of at most 1012 GeV is given, assuming that axions do not dominate the present energy density of the universe.
Journal ArticleDOI
A cosmological bound on the invisible axion
L. F. Abbott,Pierre Sikivie +1 more
TL;DR: In this paper, the production of axions in the early universe was studied and axion models which break the U(1)PQ symmetry above 1012 GeV were found to produce an unacceptably large axion energy density.