175 research outputs found
b-production at the Tevatron
The phenomenology of b-production and some of the previous Run I measurements
of CDF and D0 are briefly reviewed. A new analysis by CDF of Run I b-bbar
angular correlations and a new measurement by D0 of Run II b-jet cross-section,
are presented
CAGIRE: a wide-field NIR imager for the COLIBRI 1.3 meter robotic telescope
The use of high energy transients such as Gamma Ray Bursts (GRBs) as probes
of the distant universe relies on the close collaboration between space and
ground facilities. In this context, the Sino-French mission SVOM has been
designed to combine a space and a ground segment and to make the most of their
synergy. On the ground, the 1.3 meter robotic telescope COLIBRI, jointly
developed by France and Mexico, will quickly point the sources detected by the
space hard X-ray imager ECLAIRs, in order to detect and localise their
visible/NIR counterpart and alert large telescopes in minutes. COLIBRI is
equipped with two visible cameras, called DDRAGO-blue and DDRAGO-red, and an
infrared camera, called CAGIRE, designed for the study of high redshift GRBs
candidates. Being a low-noise NIR camera mounted at the focus of an
alt-azimutal robotic telescope imposes specific requirements on CAGIRE. We
describe here the main characteristics of the camera: its optical, mechanical
and electronics architecture, the ALFA detector, and the operation of the
camera on the telescope. The instrument description is completed by three
sections presenting the calibration strategy, an image simulator incorporating
known detector effects, and the automatic reduction software for the ramps
acquired by the detector. This paper aims at providing an overview of the
instrument before its installation on the telescope.Comment: Accepted by Experimental Astronom
Etude de quelques problemes en calorimetrie electromagnetique pour le detecteur d'Aleph
SIGLECNRS T 55964 / INIST-CNRS - Institut de l'Information Scientifique et TechniqueFRFranc
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D-Zero silicon microstrip tracker for Run IIA
We describe the production, installation and commissioning of the new 792,576 channel D0 Silicon Microstrip Tracker to be used for the 2 fb{sup -1} of the Run IIa at the Tevatron
Habilitation Thesis on Neutrino Oscillations at the Bugey Reactor, Top Discovery in CDF, and the D0 SMT
Recherche du partenaire supersymétrique du quark bottom au sein de l'expérience DØ auprès du Te Vatron (études sur l'énergie transverse manquante)
AIX-MARSEILLE2-BU Sci.Luminy (130552106) / SudocSudocFranceF
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