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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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32 papers · 1 filter
X-ray Imaging Using a Hybrid Photon Counting GaAs Pixel Detector
C. Schwarz, M. Campbell, R. Goeppert +11
The performance of hybrid GaAs pixel detectors as X-ray imaging sensors were investigated at room temperature. These hybrids consist of 300 mu-m thick GaAs pixel detectors, flip-ch…
The kinematic Sunyaev Zeldovich effect and transverse cluster velocities
Edouard Audit, John F. L. Simmons
The polarization of the CMBR scattered by galaxy clusters in the kinematic Sunyaev Zeldovich effect depends on the transverse velocity of the cluster. This polarizing effect is pro…
Neutrino masses and mixings from an SMG \times U(1)^2 model
C. D. Froggatt, M. Gibson, H. B. Nielsen
A natural solution to the fermion mass hierarchy problem suggests the existence of a partially conserved chiral symmetry. We show that this can lead to a reasonably natural solutio…
Wirtinger numbers and holomorphic symplectic immersions
Misha Verbitsky
For any subvariety of a compact holomorphic symplectic Kaehler manifold, we define the number W(X), which we call Wirtinger number. We show that , and the equality is r…
Where does Flavour Mixing come from?
J. L. Chkareuli, C. D. Froggatt
We argue that flavour mixing, both in the quark and charged lepton sector, is basically determined by the lightest family mass generation mechanism. So, in the chiral symmetry limi…
Search for the Standard Model Higgs boson at the LEP2 collider near sqrt(S) = 183GeV
ALEPH Collaboration
During 1997 the ALEPH experiment at LEP gathered 57pb^-1 of data at centre-of- mass energies near 183 GeV. These data are used to look for possible signals from the production of t…
Study of D0-Dbar0 mixing and D0 doubly cabibbo-suppressed decays
ALEPH collaboration
Using a sample of four million hadronic Z events collected in ALEPH from 1991 to 1995, the decays D*+ -> D0pi^+_s, with D0 decaying to K-pi+ or to K+pi-, are studied. The relative…
Deformation quantization of the -tuple point
S. A. Merkulov
Contrary to the classical methods of quantum mechanics, the deformation quantization can be carried out on phase spaces which are not even topological manifolds. In particular, the…
Measurement of Three-jet Distributions in Photoproduction at HERA
ZEUS Collaboration
The cross section for the photoproduction of events containing three jets with a three-jet invariant mass of M_3J > 50 GeV has been measured with the ZEUS detector at HERA. The thr…
Scalar quark searches in e^+e^- collisions at sqrt{s} = 181-184 GeV
The ALEPH Collaboration
Searches for scalar top, scalar bottom and degenerate scalar quarks have been performed with data collected with the ALEPH detector at LEP. The data sample consists of 57 pb^-1 tak…
The use of light polarization for weak-lensing inversions
Edouard Audit, John F. L. Simmons
The measurement of the integrated optical polarization of weakly gravitationally lensed galaxies can provide considerable constraints on lens models. The method outlined depends on…
Pseudoscalar decay constant in the heavy light systems
J. Hein
We discuss the size of the higher order terms in the NRQCD expansion of the pseudoscalar decay constant. Power law divergences in the matrix elements contributing to the pseudoscal…
Current Renormalisation in NRQCD for Semi-leptonic Decays
P. Boyle, C. Davies
We present a calculation of the renormalisation constants for the temporal vector current, and spatial axial current, , to for transitions us…
Finite Temperature Phase Diagram of QCD with improved Wilson Fermions
F. Karsch, E. Laermann, M. Oevers +1
We present results of an ongoing study of two flavour QCD with Wilson fermions at finite temperature. We have used tree level Symanzik improvement in both the gauge and fermion par…
A lattice potential investigation of quark mass and volume dependence of the spectrum
Gunnar S. Bali, Peter Boyle
We investigate bottomonia splittings by solving a Schrodinger-Pauli-type equation with parametrisations of QCD potentials around those that have been determined previously in latti…
Measurement of Elastic Photoproduction at HERA
ZEUS Collaboration
The photoproduction reaction gamma p -> mu+ mu- p has been studied in ep interactions using the ZEUS detector at HERA. The data sample corresponds to an integrated luminosity of 43…
The Polarisation Signatures of Microlensing
A. M. Newsam, J. F. L. Simmons, M. A. Hendry +1
It has already been shown that microlensing can give rise to a non-zero variable polarisation signal. Here we use realistic simulations to demonstrate the additional information th…
Microlensing of Extended Stellar Sources
M. A. Hendry, I. J. Coleman, N. Gray +2
We investigate the feasibility of reconstructing the radial intensity profile of extended stellar sources by inverting their microlensed light curves. Using a simple, linear, limb…
Microlensing of Circumstellar Envelopes I. Simplified considerations for diagnosing radial and azimuthal flow
R. Ignace, M. A. Hendry
This paper presents first results on the line profile shapes from a circumstellar envelope in bulk motion as modified by a microlensing event. Only geometrically and optically thin…
Screening Masses of Hot SU(2) Gauge Theory from the 3d Adjoint Higgs Model
F. Karsch, M. Oevers, P. Petreczky
We study the Landau gauge propagators of the lattice SU(2) 3d adjoint Higgs model, considered as an effective theory of high temperature 4d SU(2) gauge theory. From the long distan…
The extended moduli space of special Lagrangian submanifolds
S. A. Merkulov
It is well known that the moduli space of all deformations of a compact special Lagrangian submanifold in a Calabi-Yau manifold within the class of special Lagrangian subma…
Search for Selectron and Squark Production in Collisions at HERA
ZEUS Collaboration
We have searched for the production of a selectron and a squark in collisions at a center-of-mass energy of 300 GeV using the ZEUS detector at HERA. The selectron and squark…
QCD at HERA
N. H. Brook
A review of HERA measurements of structure functions, fragmentation functions and forward jet production is presented.
Analysis of the Lee-Yang zeros in a dynamical mass generation model in three dimensions
I. Barbour, W. Franzki, N. Psycharis
We investigate a strongly U(1) gauge theory with fermions and scalars on a three dimensional lattice and analyze whether the cintinuum limit might be a renormalizable theory with d…