We analyse the properties of generic models based on an SU (3) family symmetry providing a full description of quark charged lepton and neutrino masses and mixing angles. We show that a precise fit of the resulting fermion textures is consistent with CP being spontaneously broken in the flavour sector. The CP violating phases are determined by the scalar potential and we discuss how symmetries readily lead to a maximal phase controlling CP violation in the quark sector. In a specific model the CP violation to be expected in the neutrino sector is related to that in the quark sector and we determine this relation for two viable models. In addition to giving rise to the observed structure of quark and lepton masses this class of model solves both the CP and flavour problems normally associated with supersymmetric models. The flavour structure of the soft supersymmetry breaking terms is controlled by the family symmetry and we analyse some of the related phenomenological implications.
We systematically analyze the correlations between the various leptonic and hadronic flavor violating processes arising in SUSY Grand Unified Theories. Using the GUT-symmetric relations between the soft SUSY breaking parameters, we assess the impact of hadronic and leptonic flavor observables on the SUSY sources of flavor violation. I. INTRODUCTIONSupersymmetry (SUSY) Breaking (SB) remains one of the biggest issues in physics beyond the Standard Model (SM). In spite of various proposals [1], we still miss a realistic and theoretically satisfactory model of SB.Flavor violating processes have been instrumental in guiding us towards consistent SB models.Indeed, even in the absence of a well-defined SB mechanism and, hence, without a precise knowledge of the SUSY Lagrangian at the electroweak scale, it is still possible to make use of the Flavour Changing Neutral Current (FCNC) bounds to infer relevant constraints on the part of the SUSY soft breaking sector related to the sfermion mass matrices [2].The model-independent method which is adopted is the so-called Mass-Insertion Approximation * Unité mixte du CNRS et de l'EP, UMR 7644.
† Deceased. We dedicate this paper to Giorgio's memory. We will strive to make this experiment a great success and a tribute to his memory. He will be sorely missed. AbstractThe MoEDAL experiment at Point 8 of the LHC ring is the seventh and newest LHC experiment. It is dedicated to the search for highly ionizing particle avatars of physics beyond the Standard Model, extending significantly the discovery horizon of the LHC. A MoEDAL discovery would have revolutionary implications for our fundamental understanding of the Microcosm. MoEDAL is an unconventional and largely passive LHC detector comprised of the largest array of Nuclear Track Detector stacks ever deployed at an accelerator, surrounding the intersection region at Point 8 on the LHC ring. Another novel feature is the use of paramagnetic trapping volumes to capture both electrically and magnetically charged highly-ionizing particles predicted in new physics scenarios. It includes an array of TimePix pixel devices for monitoring highly-ionizing particle backgrounds. The main passive elements of the MoEDAL detector do not require a trigger system, electronic readout, or online computerized data acquisition. The aim of this paper is to give an overview of the MoEDAL physics reach, which is largely complementary to the programs of the large multi-purpose LHC detectors ATLAS and CMS. project grant; the V-P Research Notes 1 Defined to be a convolution of the efficiency and acceptance 2 The concept of Dirac (magnetic) charge is presented in Section 5. 3 If |n| = 1, this is only true for magnetic charge coupled to 2 H(S = 1, |q| = 1/2), 8 Li(S = 2, |q| = 3/2) and 10 B(S = 3, |q| = 5/2). 4 The reader should notice that the two-loop processes of Fig. 28(b), which couple the IC gluons to the fermionic SM sector suffer, in addition to the loop suppression, an additional helicity suppression, as compared to the diagram of Fig, 28(a), and are therefore non-leading contributions.
This chapter of the report of the "Flavor in the era of the LHC" Workshop discusses the theoretical, phenomenological and experimental issues related to flavor phenomena in the charged lepton sector and in flavor conserving CPviolating processes. We review the current experimental limits and the main theoretical models for the flavor structure of fundamental particles. We analyze the phenomenological consequences of the available data, setting constraints on explicit models beyond the standard model, presenting benchmarks for the discovery potential of forthcoming measurements both at the LHC and at low energy, and exploring options for possible future experiments.
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