2,524 research outputs found
Plans for Kaon Physics at BNL
I give an overview of current plans for kaon physics at BNL. The program is
centered on the rare decay modes K+ --> pi+ nu nubar and KL --> pi0 nu nubar.Comment: 10 pages, 8 figures. Uses espcrc2.sty. For the proceedings of HIF04:
High Intensity Frontier Workshop, La Biodola, Isola D'Elba, June 5-8, 200
Searches for Supersymmetry with the ATLAS Detector
This is a review of searches for supersymmetry (SUSY) with the ATLAS detector
in proton-proton collisions at a center-of-mass energy of 7 TeV at the Large
Hadron Collider at CERN. The review covers results that have been published, or
submitted for publication, up to September 2012, many of which cover the full 7
TeV data-taking period. No evidence for SUSY has been seen; some possibilities
for future directions are discussed.Comment: 15 pages, 2 figures. Invited review article for Modern Physics
Letters A. Electronic version of an article published as Mod. Phys. Lett. A,
Vol. 27, No. 32 (2012) 1230033 DOI: 10.1142/S0217732312300339 copyright World
Scientific Publishing Company http://www.worldscientific.com/worldscinet/mpl
Making Them Normal
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/68059/2/10.1177_000276427001400206.pd
Improved measurement of the K+->pi+nu(nu)over-bar branching ratio
An additional event near the upper kinematic limit for K+-->pi(+)nu(nu) over bar has been observed by experiment E949 at Brookhaven National Laboratory. Combining previously reported and new data, the branching ratio is B(K+-->pi(+)nu(nu) over bar)=(1.47(-0.89)(+1.30))x10(-10) based on three events observed in the pion momentum region 211<P<229 MeV/c. At the measured central value of the branching ratio, the additional event had a signal-to-background ratio of 0.9
Search for the decay in the momentum region
We have searched for the decay in the kinematic
region with pion momentum below the peak. One event was
observed, consistent with the background estimate of . This
implies an upper limit on
(90% C.L.), consistent with the recently measured branching ratio of
, obtained using the standard model
spectrum and the kinematic region above the peak. The
same data were used to search for , where is a weakly
interacting neutral particle or system of particles with .Comment: 4 pages, 2 figure
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