Flavor physics of leptons and dipole moments (2008)
Raidal, M, Bigi, I, Mangano, ML, Semertzidis, Y, Abel, S, ...
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...
Flavor physics of leptons and dipole moments (2008)
Raidal, M, Bigi, I, Mangano, ML, Semertzidis, Y, Abel, S, ...
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...
Flavour physics of leptons and dipole moments (2008)
Raidal, M., Bigi, I., Mangano, M. L., Semertzidis, Y., Abel, S., ...
This chapter of the report of the ``Flavour in the era of the LHC'' Workshop discusses the theoretical, phenomenological and experimental issues related to flavour phenomena in the charged lepton...
Flavour Physics of Leptons and Dipole Moments. (2008)
M. Raidal, DESY Forschung Hochenergiephysik, I. Bigi, M.L. Mangano, Y. Semertzidis, ...
Internal report | Preprint
The Seesaw with Many Right-Handed Neutrinos (2007)
There are no upper limits on the possible number of massive, singlet (right--handed) neutrinos that may participate in the seesaw mechanism, and some string constructions motivate seesaw models with...
Supersymmetric Jarlskog Invariants: the Neutrino Sector (2007)
Dreiner, H K, Kim, J S, Lebedev, O, Thormeier, M
We generalize the notion of the Jarlskog invariant to supersymmetric models with right--handed neutrinos. This allows us to formulate basis--independent necessary and sufficient conditions for CP...
Seesaw Neutrinos from the Heterotic String (2007)
Buchmüller, W, Hamaguchi, K, Lebedev, O, Ramos-Sanchez, S, Ratz, M
We study the possibility of realizing the neutrino seesaw mechanism in the E8XE8 heterotic string. In particular, we consider its Z_6 orbifold compactifications leading to the supersymmetric standard...
Seesaw Neutrinos From the Heterotic String. (2007)
W. Buchmuller, DESY Forschung Hochenergiephysik, K. Hamaguchi, O. Lebedev, S. Ramos-Sanchez, M. Ratz
Journal article
Metastable Vacua in Flux Compactifications and Their Phenomenology (2006)
Lebedev, O, Loewen, V, Mambrini, Y, Nilles, H P, Ratz, M
In the context of flux compactifications, metastable vacua with a small positive cosmological constant are obtained by combining a sector where supersymmetry is broken dynamically with the sector...
Low Energy Supersymmetry from the Heterotic String Landscape (2006)
Lebedev, O, Nilles, H P, Raby, S, Ramos-Sanchez, S, Ratz, M, Vaudrevange, P K S, ...
We study possible correlations between properties of the observable and hidden sectors in heterotic string theory. Specifically, we analyze the case of the Z6-II orbifold compactification which...
A Mini-Landscape of Exact MSSM Spectra in Heterotic Orbifolds (2006)
Lebedev, O, Nilles, H P, Raby, S, Ramos-Sánchez, S, Ratz, M, Vaudrevange, P K S, ...
We explore a "fertile patch" of the heterotic landscape based on a Z_6-II orbifold with SO(10) and E_6 local GUT structures. We search for models allowing for the exact MSSM spectrum. Our result is...
Supersymmetric Standard Model from the Heterotic String. (2006)
W. Buchmüller, DESY Forschung Hochenergiephysik, K. Hamaguchi, O. Lebedev, M. Ratz
Journal article
Supersymmetric Standard Model from the Heterotic String (II). (2006)
W. Buchmüller, DESY Forschung Hochenergiephysik, K. Hamaguchi, O. Lebedev, M. Ratz
Internal report | Preprint
Neutron-Electron EDM Correlations in Supersymmetry and Prospects for EDM Searches (2005)
Motivated by recent progress in experimental techniques of electric dipole moment (EDM) measurements, we study correlations between the neutron and electron EDMs in common supersymmetric models....
Flavour violation in general supergravity (2005)
Chankowski, P H, Lebedev, O, Pokorski, S
We reappraise the flavour changing neutral currents (FCNC) problem in string--derived supergravity models. We overview and classify possible sources of flavour violation and find that the problem...
Flavour violation in general supergravity (2005)
Chankowski, P H, Lebedev, O, Pokorski, Stefan
We reappraise the flavour changing neutral currents (FCNC) problem in string--derived supergravity models. We overview and classify possible sources of flavour violation and find that the problem...
Flavour in Intersecting Brane Models and Bounds on the String Scale (2003)
Abel, S., Lebedev, O., Santiago, J.
We study flavour issues in nonsupersymmetric intersecting brane models. Specifically, the purpose of the present paper is twofold: (i) to determine whether realistic flavour structures can be...
Holden, Todd, Habermeier, H-U., Cristiani, G., Golnik, A., Boris, A., Pimenov, A., ...
The far-infrared dielectric response of superlattices (SL) composed of superconducting YBa$_{2}$Cu$_{3}$O$_{7}$ (YBCO) and ferromagnetic La$_{0.67}$% Ca$_{0.33}$MnO$_{3}$ (LCMO) has been investigated...
Linssen, T., Cassiers, K., Cool, P., Lebedev, O., Whittaker, A., Vansant, E. F.
A thorough investigation was performed on the physical (mechanical, thermal, and hydrothermal stability) and chemical (ion exchange capacity and silanol number) characteristics of aluminosilicate...
A novel approach to analyse FTIR spectra of precipitates in boron-doped silicon (2003)
De Gryse, Olivier, Vanhellemont, Jan, Clauws, Paul, LEBEDEV, O, VAN LANDUYT, J, SIMOEN, E, ...
Linssen, T., Cassiers, K., Cool, P., Lebedev, O., Whittaker, A., Vansant, E. F.
A thorough investigation was performed on the physical (mechanical, thermal, and hydrothermal stability) and chemical (ion exchange capacity and silanol number) characteristics of aluminosilicate...
Vanhellemont, J, Clauws, P, Lebedev, O, Van Landuyt, J, Simoen, Eddy, ...
Infrared absorption spectra of composite precipitates are analysed with a modified Day-Thorpe algorithm, assuming a precipitated phase consisting of a mixture of two components with known optical...
Linssen, T, Aerts, K, Cool, P, Lebedev, O, Van Tendeloo, G, ...
In order to control the reactivity of the inorganic precursor and the hybrid formation, the evaporation induced self-assembly procedure (EISA) has been applied to direct alkyl amines into zirconia...
Optical spectroscopy of oxygen precipitates in heavily doped p-type silicon. (2002)
SIMOEN, E, LOO, R, CLAEYS, C, De Gryse, Olivier, Clauws, Paul, VAN LANDUYT, J, ...
Optical spectroscopy of oxygen precipitates in heavily doped p-type silicon (2002)
Loo, Roger, Degryse, O, Clauws, P, Van Landuyt, J, ...
Abel, S., Khalil, S., Lebedev, O.
We show that string models with low energy supersymmetry which accommodate the fermion mass hierarchy generally give non-universal soft trilinear couplings (A-terms). In conjunction with the...
CP Violation and Dilaton Stabilization in Heterotic String Models (2001)
Khalil, S., Lebedev, O., Morris, S.
We study the possibility of spontaneous CP violation in string models with the dilaton field stabilized at a phenomenologically acceptable value. We consider three mechanisms to stabilize the...
EDM constraints in supersymmetric theories. (2001)
Abel, S., Khalil, S., Lebedev, O.
We systematically analyze constraints on supersymmetric theories imposed by the experimental bounds on the electron, neutron, and mercury electric dipole moments. We critically reappraise the known...
Chargino Contributions to Epsilon and Epsilon-Prime (2001)
We analyze the chargino contributions to the K-\bar K mixing and epsilon-prime in the mass insertion approximation and derive the corresponding bounds on the mass insertion parameters. We find that...
EDM Constraints in Supersymmetric Theories (2001)
Abel, S., Khalil, S., Lebedev, O.
We systematically analyze constraints on supersymmetric theories imposed by the experimental bounds on the electron, neutron, and mercury electric dipole moments. We critically reappraise the known...
On the EDM Cancellations in D-brane models (2001)
Abel, S., Khalil, S., Lebedev, O.
We analyze the possibility of simultaneous electron, neutron, and mercury electric dipole moment (EDM) cancellations in the mSUGRA and D--brane models. We find that the mercury EDM constraint...
Flavour-Dependent CP Violation and Natural Suppression of the Electric Dipole Moments (2000)
Abel, S., Bailin, D., Khalil, S., Lebedev, O.
We revisit the supersymmetric CP problem and find that it can be naturally resolved if the origin of CP violation is closely related to the origin of flavour structures. In this case, the...
Searching for Supersymmetry in Hadrons (1999)
We discuss the possibility of the existence of a long-lived top squark ($\tau\ll 10^{10} years$) and its motivation. If the stop is indeed metastable, it forms hadrons. We study properties of the...
Constraints on R-parity violating couplings from LEP/SLD hadronic observables (1999)
Lebedev, O, Loinaz, W, Takeuchi, T
We analyze the one loop corrections to hadronic Z decays in an R-parity violating extension to the Minimal Supersymmetric Standard Model (MSSM). Performing a global fit to all the hadronic...
Can Flavor-Independent Supersymmetry Soft Phases Be the Source of All CP Violation? (1999)
Brhlik, M., Everett, L., Kane, G. L., King, S. F., Lebedev, O.
Recently it has been demonstrated that large phases in softly broken supersymmetric theories are consistent with electric dipole moment constraints, and are motivated in some (Type I) string models....
Theoretical analysis of electrical transport in undoped and Si doped GaN grown by LP-MOVPE. (1999)
Bougrioua, Zahia, FARVACQUE, JL, Moerman, Ingrid, Demeester, Piet, HARRIS, JJ, LEE, K, ...
Mobility collapse in undoped and Si-doped GaN grown by LP-MOVPE. (1999)
Bougrioua, Zahia, FARVACQUE, JL, Moerman, Ingrid, Demeester, Piet, HARRIS, JJ, LEE, K, ...
Linssen, T, Cassiers, K, Cool, P, Lebedev, O, Whittaker, A, Vansant, EF
A thorough investigation was performed on the physical (mechanical, thermal, and hydrothermal stability) and chemical (ion exchange capacity and silanol number) characteristics of aluminosilicate...