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33 papers · 1 filter
A Search for Leptoquarks at HERA
H1 Collaboration, S. Aid et al
A search for leptoquarks at HERA was performed in H1 using 1994 data corresponding to an integrated luminosity of about $3 \pb^{-1}$. Single leptoquarks were searched for i…
Cold Dark Matter Models with a Cosmological Constant
Andrew R Liddle, David H Lyth, Pedro T P Viana +1
We use linear and quasi-linear perturbation theory to analyse cold dark matter models of structure formation in spatially flat models with a cosmological constant. Both a tilted sp…
Jets and Energy Flow in Photon-Proton Collisions at HERA
H1-Collaboration, S. Aid et al
Properties of the hadronic final state in photoproduction events with large transverse energy are studied at the electron-proton collider HERA. Distributions of the transverse ener…
Pursuing Parameters for Critical Density Dark Matter Models
Andrew R Liddle, David H Lyth, R K Schaefer +2
We present an extensive comparison of models of structure formation with observations, based on linear and quasi-linear theory. We assume a critical matter density, and study both…
Spectroscopy of Local Density of States Fluctuations in a Disordered Conductor (Experiment)
T. Schmidt, R. J. Haug, V. I. Fal'ko +3
The local density of states of a degenerate semiconductor is investigated at low magnetic fields. In order to realize this experiment, we designed a strongly asymmetric double-barr…
Gravity, Gauges and Clocks
Pierre Teyssandier, Robin W Tucker
We discuss the definitions of standard clocks in theories of gravitation. These definitions are motivated by the invariance of actions under different gauge symmetries. We contrast…