1,724 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
Little Higgs after the little one
At the LHC, the Littlest Higgs Model with -parity is characterised by
various production channels. If the -odd quarks are heavier than the exotic
partners of the and the , then associated production can be as important
as the pair-production of the former. Studying both, we look for final states
comprising at least one lepton, jets and missing transverse energy. We consider
all the SM processes that could conspire to contribute as background to our
signals, and perform a full detector level simulation of the signal and
background to estimate the discovery potential at the current run as well as at
the scheduled upgrade of the LHC. We also show that, for one of the channels,
the reconstruction of two tagged -jets at the Higgs mass provides us with an unambiguous hint for this model.Comment: 22 pages, 3 captioned figures, 8 Tables; minor modifications, version
published in JHE
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