318 citations · 6.7k across the 307 of their papers we have counts for
9 papers · 1 filter
String Scale Gauge Coupling Unification with Vector-like Exotics and Non-Canonical U(1)_Y Normalization
V. Barger, Jing Jiang, Paul Langacker +1
We use a new approach to study string scale gauge coupling unification systematically, allowing both the possibility of non-canonical U(1)_Y normalization and the existence of vect…
String Inspired Singlet Extensions of the Minimal Supersymmetric Standard Model
Tianjun Li
The only allowed Higgs superpotential term at stringy tree level in the string derived Singlet Extensions of the Minimal Supersymmetric Standard Model (SEMSSM) is h S H_d H_u, whic…
Testable Flipped SU(5) x U(1)_X Models
Jing Jiang, Tianjun Li, Dimitri V. Nanopoulos
The little hierarchy between the GUT scale and the string scale may give us some hints that can be tested at the LHC. To achieve string-scale gauge coupling unification, we introdu…
Non-Canonical MSSM, Unification, And New Particles At The LHC
Ilia Gogoladze, Tianjun Li, V. N. Senoguz +1
We consider non-canonical embeddings of the MSSM in high-dimensional orbifold GUTs based on the gauge symmetry SU(N), N=5,6,7,8. The hypercharge normalization factor k_Y can either…
Embedding Flipped SU(5) into SO(10)
Chao-Shang Huang, Tianjun Li, Chun Liu +3
We embed the flipped SU(5) models into the SO(10) models. After the SO(10) gauge symmetry is broken down to the flipped SU(5) \times U(1)_X gauge symmetry, we can split the five/on…
Flipped and Unflipped SU(5) as Type IIA Flux Vacua
Ching-Ming Chen, Tianjun Li, Dimitri V. Nanopoulos
On Type IIA orientifolds with flux compactifications in supersymmetric AdS vacua, we for the first time construct SU(5) models with three anti-symmetric {\bf 10} representations an…