Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR1.2k papers
- The University of TokyoJP948 papers
- Excellence Cluster UniverseDE902 papers
- University of BonnDE857 papers
- Max Planck Institute for PhysicsDE848 papers
- Ludwig-Maximilians-Universität MünchenDE836 papers
- Lawrence Berkeley National LaboratoryUS774 papers
- University of CopenhagenDK774 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR757 papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR745 papers
- European Organization for Nuclear ResearchCH705 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di TorinoIT682 papers
31 papers · 2 filters
Chargino searches at LEP for complex MSSM parameters
Nabil Ghodbane, Stavros Katsanevas, Imad Laktineh +1
We reanalyze the results of the chargino searches at LEP (on the basis of the DELPHI 189 GeV data sample), including the possibility of complex MSSM parameters. We point out the po…
Coordinate Space Distributions of Antiquark Flavor Asymmetries in the Proton
Ernest M. Henley, Thorsten Renk, Wolfram Weise
We examine the space-time properties of the distribution (dbar - ubar) and dbar/ubar in the proton. The difference of the antiquark distributions shows the expected peak at the app…
Is nonperturbative inflatino production during preheating a real threat to cosmology?
Rouzbeh Allahverdi, Mar Bastero-Gil, Anupam Mazumdar
We discuss toy models where supersymmetry is broken due to non-vanishing time-varying vacuum expectation value of the inflaton field during preheating. We discuss the production of…
Direct Detection of Neutralino Dark Matter and the Anomalous Dipole Moment of the Muon
Manuel Drees, Yeong Gyun Kim, Tatsuo Kobayashi +1
We compare predictions for the spin-independent contribution to the neutralino-proton scattering cross section $\sig$ and for the anomalous magnetic dipole moment of the muon, $a_μ…
Twist-3 contribution to the amplitude in the Wandzura-Wilczek approximation
N. Kivel, L. Mankiewicz
We have calculated the Wandzura-Wilczek contribution to the twist-3 part of amplitude. It describes interaction of the longitudinally polarized virtual photon with the…
g_1 at low x and low Q^2 with Polarized ep Colliders
Steven D. Bass, Albert De Roeck
Measurements of g_1 at low x and low Q^2 are expected to provide a sensitive probe of the transition from Regge to perturbative QCD dynamics, offering a new testing ground for mode…
A Lower Bound on sin 2βfrom Minimal Flavour Violation
Andrzej J. Buras, Robert Buras
We point out that there exists an absolute lower bound on sin 2βin all models with minimal flavour violation (MFV), that do not have any new operators beyond those present in the S…
A Comparison of the Physics Potential of Future Long Baseline Neutrino Oscillation Experiments
K. Dick, M. Freund, P. Huber +1
We compare the generic physics potential of various combinations of conventional Wide Band or Neutrino Factory Beams with different detectors to determine several oscillation param…
Coherence Effects in Diffractive Electroproduction of rho Mesons from Nuclei
T. Renk, G. Piller, W. Weise
A systematic multiple scattering formalism for vector meson electroproduction from nuclei is developed, with emphasis on the formation, propagation and hadronization scales for qua…
Thermal Dileptons from Quark and Hadron Phases of an Expanding Fireball
R. A. Schneider, W. Weise
A fireball model with time evolution based on transport calculations is used to examine the dilepton emission rate of an ultra-relativistic heavy-ion collision. We assume a transit…
epsilon'/epsilon and Rare K and B Decays in the MSSM
A. J. Buras, P. Gambino, M. Gorbahn +2
We analyze the CP violating ratio epsilon'/epsilon and rare K and B decays in the MSSM with minimal flavour and CP violation, including NLO QCD corrections and imposing constraints…
Axial U(1) dynamics in eta and eta' photoproduction
Steven D. Bass, Stefan Wetzel, Wolfram Weise
We discuss the sensitivity of eta and eta' photoproduction near threshold to the gluonic OZI breaking parameters in the U_A(1)-extended effective chiral Lagrangian for low-energy Q…
Electroweak effects in radiative B decays
Paolo Gambino, Ulrich Haisch
We compute the two-loop electroweak corrections to the radiative decays of the B meson in the SM. Electroweak effects reduce the Wilson coefficient C_7^eff(mw) by 2.6% for a light…
Scrutinizing LSP Dark Matter at the LHC
Manuel Drees, Yeong Gyun Kim, Mihoko M. Nojiri +3
We show that LHC experiments might well be able to determine all the parameters required for a prediction of the present density of thermal LSP relics from the Big Bang era. If the…
Universal Unitarity Triangle and Physics Beyond the Standard Model
A. J. Buras, P. Gambino, M. Gorbahn +2
We make the simple observation that there exists a universal unitarity triangle for all models, like the SM, the Two Higgs Doublet Models I and II and the MSSM with minimal flavour…
New Constraints on "Cool" Dark Matter
Manuel Drees, David Wright
It has been suggested that a sterile neutrino ν_s which mixes with standard neutrinos can form nonthermal ``cool'' Dark Matter if its mass and mixing angle fall in the ranges 0.1 k…
Weak hyperon decays in heavy baryon chiral perturbation theory: Renormalization and applications
B. Borasoy, G. Muller
The complete renormalization of the weak Lagrangian to chiral order q^2 in heavy baryon chiral perturbation theory is performed using heat kernel techniques. The results are compar…
Two-Loop QCD Anomalous Dimensions of Flavour-Changing Four-Quark Operators Within and Beyond the Standard Model
Andrzej J. Buras, Mikolaj Misiak, Joerg Urban
We calculate the two-loop QCD anomalous dimension matrix (ADM) gamma^(1)_NDR in the NDR-MSbar scheme for all the flavour-changing four-quark dimension-six operators that are releva…
QCD Corrections to Neutralino-Nucleon Scattering
Abdelhak Djouadi, Manuel Drees
We calculate the dominant loop corrections from both standard and supersymmetric QCD to the effective coupling of neutralinos to nucleons. The potentially largest corrections come…
Extracting Matter Effects, Masses and Mixings at a Neutrino Factory
M. Freund, P. Huber, M. Lindner
We discuss and quantify different possibilities to determine matter effects, the value and the sign of , as well as the magnitude of in very long b…
The electric dipole moment of the neutron in chiral perturbation theory
B. Borasoy
We calculate the electric dipole moments of the neutron and the Lambda within the framework of heavy baryon chiral perturbation theory. They are induced by strong CP-violating term…
A consistent nonperturbative approach to thermal damping-rates
Bastian Bergerhoff, Juergen Reingruber
We propose a nonperturbative scheme for the calculation of thermal damping-rates using exact renormalization group (RG)-equations. Special emphasis is put on the thermal RG where f…
Constraints on the CKM Angle and Strong Phases from Decays
Andrzej J. Buras, Robert Fleischer
As we pointed out recently, the neutral decays and may provide non-trivial bounds on the CKM angle . In this paper, we reconsider this approach…
The weak angle gamma from one-particle inclusive CP asymmetries in the B(s) system
X. Calmet
We compute CP asymmetries of one-particle inclusive B(s) --> D(s) X decay rates. We find that the weak angle gamma could in principle be extracted from these asymmetries although t…