scholarly journals Probing the Geometry of Warped String Compactifications at the Large Hadron Collider

2008 ◽  
Vol 100 (3) ◽  
Author(s):  
Gary Shiu ◽  
Bret Underwood ◽  
Kathryn M. Zurek ◽  
Devin G. E. Walker
2011 ◽  
Vol 26 (02) ◽  
pp. 87-100
Author(s):  
JAMES MAXIN ◽  
VAN E. MAYES ◽  
D. V. NANOPOULOS

No-scale supergravity is a framework where it is possible to naturally explain radiative electroweak symmetry breaking and correlate it with the effective SUSY breaking scale. Many string compactifications have a classical no-scale structure, resulting in a one-parameter model (OPM) for the supersymmetry breaking soft terms, which results in a highly constrained subset of mSUGRA. We investigate the allowed supersymmetry parameter space for a generic one-parameter model taking into account the most recent experimental constraints. We also survey the possible signatures which may be observable at the Large Hadron Collider (LHC). Finally, we compare collider signatures of OPM to those from a model with non-universal soft terms, in particular those of an intersecting D6-brane model.


2020 ◽  
Vol 2020 (11) ◽  
Author(s):  
Linda M. Carpenter ◽  
Taylor Murphy ◽  
Matthew J. Smylie

Abstract In this work we study the collider phenomenology of color-octet scalars (sgluons) in minimal supersymmetric models endowed with a global continuous R symmetry. We systematically catalog the significant decay channels of scalar and pseudoscalar sgluons and identify novel features that are natural in these models. These include decays in nonstandard diboson channels, such as to a gluon and a photon; three-body decays with considerable branching fractions; and long-lived particles with displaced vertex signatures. We also discuss the single and pair production of these particles and show that they can evade existing constraints from the Large Hadron Collider, to varying extents, in large regions of reasonable parameter space. We find, for instance, that a 725 GeV scalar and a 350 GeV or lighter pseudoscalar can still be accommodated in realistic scenarios.


Author(s):  
S. A. Antipov ◽  
N. Biancacci ◽  
J. Komppula ◽  
E. Métral ◽  
B. Salvant ◽  
...  

Author(s):  
T. E. Levens ◽  
K. Łasocha ◽  
T. Lefevre ◽  
M. Gąsior ◽  
R. Jones ◽  
...  

2020 ◽  
Vol 28 ◽  
pp. 2228-2234
Author(s):  
E. Solfiti ◽  
M. Calviani ◽  
A. Perillo-Marcone ◽  
J.M. Heredia ◽  
C. Torregrosa ◽  
...  

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