1.4k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Texas A&M UniversityUS282 papers
- Academy of AthensGR204 papers
- European Organization for Nuclear ResearchCH141 papers
- Institute of Theoretical PhysicsCN77 papers
- Chinese Academy of SciencesCN75 papers
- King's College LondonGB60 papers
- Mitchell InstituteUS50 papers
- University of MinnesotaUS41 papers
- Sam Houston State UniversityUS27 papers
- Kavli Institute for Theoretical SciencesCN26 papers
- University of OxfordGB25 papers
- Rice UniversityUS21 papers
11 papers · 2 filters
Supersymmetry and R_b in the light of LEP 1.5
J. Ellis, J. Lopez, D. Nanopoulos
We re-examine the possible magnitude of the supersymmetric contribution to in the light of the constraints imposed by the absence of…
A new scenario for string unification
J. Lopez, D. Nanopoulos
We present a new scenario for gauge coupling unification in flipped SU(5) string models, which identifies the scale of SU(3) and SU(2) unification with the empirical $M_{\…
Lowering alpha_s by flipping SU(5)
J. Ellis, J. Lopez, D. Nanopoulos
We show that the prediction for in flipped SU(5) is naturally lower than in minimal SU(5), and that the former can accommodate the full range of presently all…
Vanishing Str M^2 in the presence of anomalous U_A(1)
J. Lopez, D. Nanopoulos
We show that the presence of an anomalous factor in the gauge group of string-derived models may have the new and important phenomenological consequence of allowing th…
The Missing Doublet Model Revamped
J. Lopez, D. Nanopoulos
We revisit the Missing Doublet Model (MDM) as a means to address the apparent difficulties of the minimal supergravity model in dealing with the doublet-triplet splitting p…
in supersymmetric models
X. Wang, J. Lopez, D. Nanopoulos
We compute the supersymmetric contribution to in a variety of supersymmetric models. In the context of supergravity models wit…
On the Thermal Regeneration Rate for Light Gravitinos in the Early Universe
John Ellis, D. V. Nanopoulos, Keith A. Olive +1
We investigate the light gravitino regeneration rate in the early Universe in models based on supergravity. Motivated by a recent claim by Fischler, we evaluate finite-temper…
Precision Tests of CPT Symmetry and Quantum Mechanics in the Neutral Kaon System
J. Ellis, J. Lopez, N. Mavromatos +1
We present a systematic phenomenological analysis of the tests of CPT symmetry that are possible within an {\em open} quantum-mechanical description of the neutral kaon system that…
A string no-scale supergravity model and its experimental consequences
J. Lopez, D. Nanopoulos, A. Zichichi
We propose a string-derived model based on the gauge group which satisfies the stringent constraints from no-scale supergravity, allows gauge coupling unificatio…
A new cosmological constant model
J. Lopez, D. Nanopoulos
We propose a new cosmological model with a time-dependent cosmological constant (), which starting at the Planck time as , evolves to the prese…
in supergravity models
X. Wang, J. Lopez, D. Nanopoulos
We compute the supersymmetric contribution to in a variety of supergravity models. We find $R^{\rm susy}_b\lsim0.0004$, which…