SUSY-GUTs, SUSY-Seesaw and the Neutralino Dark Matter
19 pages, 7 figures.-- ISI Article Identifier: 000249788800048.-- ArXiv pre-print available at: http://arxiv.org/abs/0704.3518
FCNC and CP violation observables in an SU(3)-flavoured MSSM
A non-Abelian flavour symmetry in a minimal supersymmetric standard model can explain the flavour structures in the Yukawa couplings and simultaneously solve the SUSY flavour problem. Similarly the SUSY CP problem can be solved if CP is spontaneously broken in the flavour sector. In this work, we present an explicit example of these statements with a SU(3) flavour symmetry and spontaneous CP violation. In addition, we show that it is still possible to find some significant deviation from the SM expectations as far as FCNC and CP violation are concerned. We find that large contributions can be expected in lepton flavour violating decays, as � ! e and � ! � , electric dipole moments, de and d…
Flavour and Collider Interplay for SUSY at LHC7
The current 7 TeV run of the LHC experiment shall be able to probe gluino and squark masses up to values larger than 1 TeV. Assuming that hints for SUSY are found in the jets plus missing energy channel by the end of a 5 fb$^{-1}$ run, we explore the flavour constraints on three models with a CMSSM-like spectrum: the CMSSM itself, a Seesaw extension of the CMSSM, and Flavoured CMSSM. In particular, we focus on decays that might have been measured by the time the run is concluded, such as $B_s\to\mu\mu$ and $\mu\to e\gamma$. We also analyse constraints imposed by neutral meson bounds and electric dipole moments. The interplay between collider and flavour experiments is explored through the u…
Electric dipole moments from flavoredCPviolation in supersymmetry
The so-called supersymmetric flavor and $CP$ problems are deeply related to the origin of flavor and hence to the origin of the standard model Yukawa couplings themselves. We show that realistic $SU(3)$ flavor symmetries with spontaneous $CP$ violation reproducing correctly the standard model Yukawa matrices can simultaneously solve both problems without ad hoc modifications of the supersymmetric model. We analyze the leptonic electric dipole moments and lepton flavor violation processes in these models. We show that the electron electric dipole moment and the decay $\ensuremath{\mu}\ensuremath{\rightarrow}e\ensuremath{\gamma}$ are naturally within reach of the proposed experiments if the s…
Lepton Flavour Violation in SUSY SO(10)
The study of rare processes, which are suppressed or even forbidden in the Standard Model (SM) of particle physics, has been considered for a long time a powerful tool in order to shed light on new physics, especially for testing low-energy supersymmetry (SUSY). Indeed, taking into account the fact that neutrinos have mass and mix, the Standard Model predicts Lepton Flavour Violating (LFV) processes in the charged sector to occur at a negligible rate [1]. As a consequence, the discovery of such processes would be an unambigous signal of physics beyond the Standard Model. In the present years, we are experiencing a great experimental effort in searching for LFV processes; several experiments…
Future Physics Programme of BESIII
There has recently been a dramatic renewal of interest in the subjects of hadron spectroscopy and charm physics. This renaissance has been driven in part by the discovery of a plethora of charmonium-like $XYZ$ states at BESIII and $B$ factories, and the observation of an intriguing proton-antiproton threshold enhancement and the possibly related $X(1835)$ meson state at BESIII, as well as the threshold measurements of charm mesons and charm baryons. We present a detailed survey of the important topics in tau-charm physics and hadron physics that can be further explored at BESIII over the remaining lifetime of BEPCII operation. This survey will help in the optimization of the data-taking pla…