1,125 research outputs found
Bs, Bc and b-baryons
We present the latest measurements on masses, lifetimes and branching
fractions for the B_s and B_c mesons as well as for b-baryons. For the B_s
meson we discuss as well the latest results on mixing. These results were
produced by the CDF and D0 experiments at Fermilab or by earlier LEP and PEPII
experiments.Comment: 13 pages, 17 figures, contribution to the Proceedings of the 25th
International Symposium on Physics in Collision (PIC 05), Prague, Czech
Republic, July 6-9, 2005 (In version 2 there were a couple of typos fixed and
a reference added in section 2
Status of the LBNE Neutrino Beamline
The Long Baseline Neutrino Experiment (LBNE) will utilize a neutrino beamline
facility located at Fermilab to carry out a compelling research program in
neutrino physics. The facility will aim a beam of neutrinos toward a detector
placed at the Homestake Mine in South Dakota. The neutrinos are produced in a
three-step process. First, protons from the Main Injector (60-120 GeV) hit a
solid target and produce mesons. Then, the charged mesons are focused by a set
of focusing horns into the decay pipe, towards the far detector. Finally, the
mesons that enter the decay pipe decay into neutrinos. The parameters of the
facility were determined taking into account several factors including the
physics goals, the Monte Carlo modeling of the facility, spacial and
radiological constraints and the experience gained by operating the NuMI
facility at Fermilab. The initial beam power is expected to be ~700 kW, however
some of the parameters were chosen to be able to deal with a beam power of 2.3
MW. We discuss here the status of the conceptual design and the associated
challenges.Comment: 6 pages, 3 figure
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B physics at CDF
We present the latest measurements on production, spectroscopy, lifetimes and branching fractions for b-mesons, b-baryons and quarkonia. We also discuss recent results on B{sub s}{sup 0} mixing as well as on CP violation for the B{sub s}{sup 0} meson and for b-baryons. These results were obtained by analyzing data collected by the CDF II detector at Fermilab
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Luminosity measurements at hadron colliders
In this paper we discuss luminosity measurements at Tevatron and HERA as well as plans for luminosity measurements at LHC. We discuss luminosity measurements using the luminosity detectors of the experiments as well as measurements by the machine. We address uncertainties of the measurements, challenges and lessons learned
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Overview of the LBNE Neutrino Beam
The Long Baseline Neutrino Experiment (LBNE) will utilize a neutrino beamline facility located at Fermilab. The facility is designed to aim a beam of neutrinos toward a detector placed at the Deep Underground Science and Engineering Laboratory (DUSEL) in South Dakota. The neutrinos are produced in a three-step process. First, protons from the Main Injector hit a solid target and produce mesons. Then, the charged mesons are focused by a set of focusing horns into the decay pipe, towards the far detector. Finally, the mesons that enter the decay pipe decay into neutrinos. The parameters of the facility were determined by an amalgam of the physics goals, the Monte Carlo modeling of the facility, and the experience gained by operating the NuMI facility at Fermilab. The initial beam power is expected to be {approx}700 kW, however some of the parameters were chosen to be able to deal with a beam power of 2.3 MW
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