257 research outputs found
R-parity Violation in Neutralino Decays at an e \gamma Collider
At an e-\gamma collider, a selectron \tilde{e}_{L,R} may be produced in
association with a (lightest) neutralino \tilde{\chi}_1. Decay of the selectron
may be expected to yield a final state with an electron and another
\tilde{\chi}_1. If R-parity is violated, these two neutralinos will decay,
giving rise to distinctive signatures, which are identified and studied.Comment: LaTeX, 17 pages, 4 figure
Top off the unparticle
The existence of an exactly scale invariant sector possessing a non-trivial
infrared fixed point at a higher energy scale and its possible communication
with the Standard Model particles through a heavy messenger sector has been
shown to lead to curious unparticle effects. We demonstrate that top physics at
the Tevatron can already constrain such theories. We also consider possible
improvements at the LHC and delineate some striking signatures.Comment: 5 page
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