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127 papers · 1 filter
Non-confirmation of reported HI clouds without optical counterparts in the Hercules Cluster
W. van Driel, K. O'Neil, V. Cayatte +8
21 cm HI line observations were made with the Arecibo Gregorian telescope of 9 HI clouds in the Hercules Cluster which were reported as tenative detections in a VLA HI study of the…
Discovery of a High-Redshift (z=0.96) Cluster of Galaxies Using a FIRST Wide-Angle Tailed Radio Source
Elizabeth L. Blanton, Michael D. Gregg, David J. Helfand +2
Using a combination of near-infrared and optical photometry, along with multi-object spectroscopy, we have confirmed the existence of a high-redshift cluster of galxies at z = 0.96…
Uncovering Low-Dimensional Topological Structure in the QCD Vacuum
I. Horvath, S. J. Dong, T. Draper +5
Recently, we have pointed out that sign-coherent 4-dimensional structures can not dominate topological charge fluctuations in QCD vacuum at all scales. Here we show that an enhance…
First Measurement of Transferred Polarization in the Exclusive e p --> e' K+ Lambda Reaction
CLAS Collaboration, D. S. Carman
The first measurements of the transferred polarization for the exclusive ep --> e'K+ Lambda reaction have been performed in Hall B at the Thomas Jefferson National Accelerator Faci…
Radiation hardness of the PIBETA detector components
E. Frlez, T. A. Campbell, I. J. Carey +1
We have examined long term changes in signal amplitude gain, energy resolution and detection efficiency for the active components of the PIBETA detector system. Beam defining plast…
Measurements of the Decay KL->e+e-mu+mu-
The KTeV Collaboration
The KTeV experiment at Fermilab has isolated a total of 132 events from the rare decay KL->e+e-mu+mu-, with an estimated background of 0.8 events. The branching ratio of this mode…