Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR1.6k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR1.4k papers
- Heidelberg UniversityDE1.3k papers
- Max Planck SocietyDE1.1k papers
- University of ZurichCH1.1k papers
- European Organization for Nuclear ResearchCH1k papers
- Laboratoire de Physique Nucléaire et de Hautes ÉnergiesFR990 papers
- Institute of Nuclear Physics, Polish Academy of SciencesPL973 papers
- University of Maryland, College ParkUS940 papers
- Rutherford Appleton LaboratoryGB939 papers
- Institute for Nuclear ResearchRU922 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di BolognaIT912 papers
43 papers · 2 filters
On Non-Unitary Lepton Mixing and Neutrino Mass Observables
Werner Rodejohann
There are three observables related to neutrino mass, namely the kinematic mass in direct searches, the effective mass in neutrino-less double beta decay, and the sum of neutrino m…
keV sterile neutrino dark matter in gauge extensions of the standard model
F. Bezrukov, H. Hettmansperger, M. Lindner
It is known that a keV scale sterile neutrino is a good warm dark matter candidate. We study how this possibility could be realized in the context of gauge extensions of the standa…
Global interpretation of direct Dark Matter searches after CDMS-II results
Joachim Kopp, Thomas Schwetz, Jure Zupan
We perform a global fit to data from Dark Matter (DM) direct detection experiments, including the recent CDMS-II results. We discuss possible interpretations of the DAMA annual mod…
GIMPs from Extra Dimensions
Martin Holthausen, Ryo Takahashi
We study a scalar field theory in a flat five-dimensional setup, where a scalar field lives in a bulk with a Dirichlet boundary condition, and give an implementation of this setup…
Light inflaton Hunter's Guide
F. Bezrukov, D. Gorbunov
We study the phenomenology of a realistic version of the chaotic inflationary model, which can be fully and directly explored in particle physics experiments. The inflaton mixes wi…
Fine Tuning in General Gauge Mediation
Tatsuo Kobayashi, Yuichiro Nakai, Ryo Takahashi
We study the fine-tuning problem in the context of general gauge mediation. Numerical analyses toward for relaxing fine-tuning are presented. We analyse the problem in typical thre…
Systematic approach to leptogenesis in nonequilibrium QFT: self-energy contribution to the CP-violating parameter
M. Garny, A. Hohenegger, A. Kartavtsev +1
In the baryogenesis via leptogenesis scenario the self-energy contribution to the CP-violating parameter plays a very important role. Here, we calculate it in a simple toy model of…
Ultra-low Q values for neutrino mass measurements
Joachim Kopp, Alexander Merle
We investigate weak nuclear decays with extremely small kinetic energy release (Q value) and thus extremely good sensitivity to the absolute neutrino mass scale. In particular, we…
Effect of a strong laser field on photoproduction by relativistic nuclei
A. Di Piazza, E. Lötstedt, A. I. Milstein +1
We study the influence of a strong laser field on the Bethe-Heitler photoproduction process by a relativistic nucleus. The laser field propagates in the same direction as the incom…
Radiative Symmetry Breaking of the Minimal Left-Right Symmetric Model
Martin Holthausen, Manfred Lindner, Michael A. Schmidt
Under the assumption of classical conformal invariance, we study the Coleman-Weinberg symmetry breaking mechanism in the minimal left-right symmetric model. This model is attractiv…
Phenomenology of AdS/QCD and Its Gravity Dual
B. Galow, E. Megias, J. Nian +1
We construct the dilaton potential in the gravity dual theory of AdS/QCD for the warp factor of Refs.{1,2}. Using this AdS_5-metric with properties similar to QCD, we find that the…
Diagonal Kaluza-Klein expansion under brane localized potential
Naoyuki Haba, Kin-ya Oda, Ryo Takahashi
We clarify and study our previous observation that, under a compactification with boundaries or orbifolding, vacuum expectation value of a bulk scalar field can have different extr…
On the Consistency of Perturbativity and Gauge Coupling Unification
Joachim Kopp, Manfred Lindner, Viviana Niro +1
We investigate constraints that the requirements of perturbativity and gauge coupling unification impose on extensions of the Standard Model and of the MSSM. In particular, we disc…
Non-standard neutrino interactions in the Zee-Babu model
Tommy Ohlsson, Thomas Schwetz, He Zhang
We investigate non-standard neutrino interactions (NSIs) in the Zee--Babu model. The size of NSIs predicted by this model is obtained from a full scan over the parameter space, tak…
Investigating light neutralinos at neutrino telescopes
V. Niro, A. Bottino, N. Fornengo +1
We present a detailed analysis of the neutrino-induced muon signals coming from neutralino pair-annihilations inside the Sun and the Earth with particular emphasis for light neutra…
Systematic approach to leptogenesis in nonequilibrium QFT: vertex contribution to the CP-violating parameter
M. Garny, A. Hohenegger, A. Kartavtsev +1
The generation of a baryon asymmetry via leptogenesis is usually studied by means of classical kinetic equations whose applicability to processes in the hot and expanding early uni…
Flavor Composition of UHE Neutrinos at Source and at Neutrino Telescopes
Sandhya Choubey, Werner Rodejohann
We parameterize the initial flux composition of high energy astrophysical neutrinos as (Phi_e^0 : Phi_mu^0 : Phi_tau^0) = (1 : n : 0), where n characterizes the source. All usually…
Non-Abelian Discrete Groups from the Breaking of Continuous Flavor Symmetries
A. Adulpravitchai, A. Blum, M. Lindner
We discuss the possibility of obtaining a non-abelian discrete flavor symmetry from an underlying continuous, possibly gauged, flavor symmetry SU(2) or SU(3) through spontaneous sy…
Radiative Transmission of Lepton Flavor Hierarchies
Adisorn Adulpravitchai, Manfred Lindner, Alexander Merle +1
We discuss a one loop model for neutrino masses which leads to a seesaw-like formula with the difference that the charged lepton masses replace the unknown Dirac mass matrix presen…
Wilson Loop-Loop Correlators in AdS/QCD
J. Nian, H. J. Pirner
We calculate the expectation value of one circular Wilson loop and the correlator of two concentric circular Wilson loops in AdS/QCD using the modified AdS_5-metric given in Ref.[1…
Few-Photon Electron-Positron Pair Creation by Relativistic Muon Impact on Intense Laser Beams
Sarah J. Müller, Carsten Müller
Electron-positron pair production in combined laser and Coulomb fields is studied. To this end, the Feynman diagram for multiphoton pair creation by muon impact on a circularly pol…
Large U_{e3} and Tri-bimaximal Mixing
Srubabati Goswami, Serguey Petcov, Shamayita Ray +1
We investigate in a model-independent way to what extent one can perturb tri-bimaximal mixing in order to generate a sizable value of |U_{e3}|, while at the same time keeping solar…
First hint for CP violation in neutrino oscillations from upcoming superbeam and reactor experiments
Patrick Huber, Manfred Lindner, Thomas Schwetz +1
We compare the physics potential of the upcoming neutrino oscillation experiments Daya Bay, Double Chooz, NOvA, RENO, and T2K based on their anticipated nominal luminosities and sc…
Why a splitting in the final state cannot explain the GSI-Oscillations
Alexander Merle
In this paper, I give a pedagogical discussion of the GSI anomaly. Using two different formulations, namely the intuitive Quantum Field Theory language of the second quantized pict…