3,447 research outputs found
An Asymmetric B Factory at 10^(36) Luminosity
The physics opportunities at an asymmetric B Factory operating at the unprecedented luminosity of 10^(36) cm^(â2) s^(â1) are unique and attractive. The accelerator appears to be practical and the challenges of performing a sensitive experiment in this environment can be met
Super B Factories
Heavy-flavor physics, in particular B and Ï physics results from the B factories, currently provides strong constraints on models of physics beyond the Standard Model. A new generation of colliders, Super B Factories, with 50 to 100 times the luminosity of existing colliders, can, in a dialog with LHC and ILC, provide unique clarification of new physics phenomena seen at those machines
First CP Violation Results from BABAR
We present a preliminary measurement of time-dependent CP-violating
asymmetries in B^0-->J/psi K_S and B^0-->psi(2S) K_S decays recorded by the
BABAR detector at the PEP-II asymmetric B Factory at SLAC. The data sample
consists of 9.0 fb-1 collected at the Upsilon(4S) resonance and 0.8 fb-1
off-resonance. One of the neutral B mesons, produced in pairs at the
Upsilon(4S), is fully reconstructed. The flavor of the other neutral B meson is
tagged at the time of its decay, mainly with the charge of identified leptons
and kaons. The time difference between the decays is determined by measuring
the distance between the decay vertices. Wrong-tag probabilities and the time
resolution function are measured with samples of fully-reconstructed
semileptonic and hadronic neutral B final states. The value of the asymmetry
amplitude, sin(2*beta), is determined from a maximum likelihood fit to the time
distribution of 120 tagged B^0-->J/psi K_S and B^0-->psi(2S) K_S candidates:
sin(2*beta) = 0.12+/-0.37(stat)+/-0.09(syst).Comment: 19 pages, 10 postscript figures, contributed to the Proceedings of
ICHEP200
We the People': Five Years of Online Petitions
Americans are most likely to petition the White House on health care, veterans' issues, illnesses, immigration, animal rights, holidays and criminal investigations, but the actual impact of petitions was modest and varied
The tracker and calorimeter systems of the Mu2e experiment
The Mu2e experiment at Fermilab is a sensitive search for lepton flavor violation via muon-to-electron conversion in the field of an aluminum nucleus. The requirements for the tracking and calorimeter systems of the experiment, as well as the design of systems that fulfill these requirements, are briefly described
Global Fits of the CKM Matrix
We report upon the present status of global fits to Cabibbo-Kobayashi-Maskawa
matrix.Comment: 3 pages, 3 figures invited talk presented at EPS conference, Aachen
July 17-2
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