398 citations · 3k across the 46 of their papers we have counts for
47 papers · 1 filter
CP Violating Lepton Asymmetry from B Decays in Supersymmetric Grand Unified Theories
Bhaskar Dutta, Yukihiro Mimura, Yudi Santoso
We investigate the effect of the dimuon CP asymmetry from the B decay modes, recently observed at 3.2 sigma deviation from the Standard Model (SM) by the D0 collaboration, in the c…
Tau-Sneutrino NLSP and Multilepton Signatures at the LHC
Terrance Figy, Krzysztof Rolbiecki, Yudi Santoso
In models with gravitino as the lightest supersymmetric particle(LSP), the next to lightest supersymmetric particle (NLSP) can have a long lifetime and appear stable in collider ex…
MSSM inflation, dark matter, and the LHC
Rouzbeh Allahverdi, Bhaskar Dutta, Yudi Santoso
Inflation can occur near a point of inflection in the potential of flat directions of the Minimal Supersymmetric Standard Model. In this paper we elaborate on the complementarity b…
Models of supersymmetric dark matter and their predictions in light of CDMS
Rouzbeh Allahverdi, Bhaskar Dutta, Yudi Santoso
We consider the prospects of supersymmetric dark matter in light of the recent results announced by the CDMS experiments. In this paper, we investigate the status of: (i) neutralin…
Signatures of Sneutrino NLSP in Gravitino Dark Matter Scenario at the LHC
Yudi Santoso
We present the phenomenology of a supersymmetric model with sneutrino as the next to lightest supersymmetric particle (NLSP) in the gravitino dark matter scenario at the LHC. We fo…
Correlation between direct dark matter detection and Br(B_s -> mu mu) with a large phase of B_s - anti-B_s mixing
Bhaskar Dutta, Yukihiro Mimura, Yudi Santoso
We combine the analyses for flavor changing neutral current processes and dark matter solutions in minimal-type supersymmetric grand unified theory (GUT) models, SO(10) and SU(5),…
The Phenomenology of Gravitino Dark Matter Scenarios in Supergravity Models
Yudi Santoso
We review the phenomenology of gravitino dark matter within supergravity framework. Gravitino can be dark matter if it is the lightest supersymmetric particle, which is stable if R…
Sneutrino Dark Matter and the Observed Anomalies in Cosmic Rays
Rouzbeh Allahverdi, Bhaskar Dutta, Katherine Richardson-McDaniel +1
We revisit sneutrino dark matter in light of the recent results from the PAMELA and ATIC experiments. In the U(1)_B-L extension of the minimal supersymmetric standard model the rig…
A Supersymmetric B-L Dark Matter Model and the Observed Anomalies in the Cosmic Rays
Rouzbeh Allahverdi, Bhaskar Dutta, Katherine Richardson-McDaniel +1
We propose a simple model of supersymmetric dark matter that can explain recent results from PAMELA and ATIC experiments. It is based on a U(1)_B-L extension of the minimal supersy…
Cosmological scenario of stop NLSP with gravitino LSP and the cosmic lithium problem
Kazunori Kohri, Yudi Santoso
The discrepancy on Li^7 and Li^6 abundances between the observational data and the standard Big Bang Nucleosynthesis theory prediction has been a nagging problem in astrophysics an…
Gravitino Dark Matter with Sneutrino NLSP in NUHM
Yudi Santoso
The identity of dark matter has not been solved up to this date, a problem that became the main topic of this conference. There are many theoretical candidates for dark matter part…
Sneutrino NLSP Scenarios in the NUHM with Gravitino Dark Matter
John Ellis, Keith A. Olive, Yudi Santoso
We analyze scenarios in which some flavour of sneutrino is the next-to-lightest supersymmetric particle (NLSP), assuming that the gravitino is the lightest supersymmetric particle…
Gravitino Dark Matter with Stop as the NLSP
Yudi Santoso
Gravitino is one feasible candidate for the dark matter in supergravity models. With its couplings being suppressed by the Plank mass, gravitino interacts very weakly with other pa…
On the Feasibility of a Stop NLSP in Gravitino Dark Matter Scenarios
J. L. Diaz-Cruz, John Ellis, Keith A. Olive +1
We analyze the possibility that the lighter stop {\tilde t_1} could be the next-to-lightest supersymmetric particle (NLSP) in models where the gravitino is the lightest supersymmet…
Sensitivity to new supersymmetric thresholds through flavour and CP violating physics
Maxim Pospelov, Adam Ritz, Yudi Santoso
Treating the MSSM as an effective theory below a threshold scale Lambda, we study the consequences of having dimension-five operators in the superpotential for flavour and CP-viola…
On B_s -> mu+ mu- and Cold Dark Matter Scattering in the MSSM with Non-Universal Higgs Masses
John Ellis, Keith A. Olive, Yudi Santoso +1
We show that present experimental constraints on B_s -> mu+ mu- decay and the CDMS upper limit on the cold dark matter elastic scattering cross section already have significant imp…
Flavor and CP violating physics from new supersymmetric thresholds
Maxim Pospelov, Adam Ritz, Yudi Santoso
Treating the MSSM as an effective theory, we study the implications of having dimension five operators in the superpotential for flavor and CP-violating processes, exploiting the l…
On the Higgs Mass in the CMSSM
John Ellis, Dimitri Nanopoulos, Keith A. Olive +1
We estimate the mass of the lightest neutral Higgs boson h in the minimal supersymmetric extension of the Standard Model with universal soft supersymmetry-breaking masses (CMSSM),…
CP-odd Phase Correlations and Electric Dipole Moments
Keith A. Olive, Maxim Pospelov, Adam Ritz +1
We revisit the constraints imposed by electric dipole moments (EDMs) of nucleons and heavy atoms on new CP-violating sources within supersymmetric theories. We point out that certa…
Update on the Direct Detection of Supersymmetric Dark Matter
John Ellis, Keith A. Olive, Yudi Santoso +1
We compare updated predictions for the elastic scattering of supersymmetric neutralino dark matter with the improved experimental upper limit recently published by CDMS II. We take…
Prospects for Sparticle Discovery in Variants of the MSSM
John Ellis, Keith A. Olive, Yudi Santoso +1
We discuss the prospects for detecting supersymmetric particles in variants of the minimal supersymmetric extension of the Standard Model (MSSM), in light of laboratory and cosmolo…
Very Constrained Minimal Supersymmetric Standard Models
John Ellis, Keith A. Olive, Yudi Santoso +1
We consider very constrained versions of the minimal supersymmetric extension of the Standard Model (VCMSSMs) which, in addition to constraining the scalar masses m_0 and gaugino m…
Gravitino Dark Matter in the CMSSM
John Ellis, Keith A. Olive, Yudi Santoso +1
We consider the possibility that the gravitino might be the lightest supersymmetric particle (LSP) in the constrained minimal extension of the Standard Model (CMSSM). In this case,…
Likelihood Analysis of the CMSSM Parameter Space
John Ellis, Keith A. Olive, Yudi Santoso +1
We present a likelihood analysis of the parameter space of the constrained minimal supersymmetric extension of the Standard Model (CMSSM), in which the input scalar masses m_0 and…