875 research outputs found
Double-spin asymmetry in elastic proton-proton scattering as a probe for the Odderon
The magnitude of the double-spin asymmetry A_{NN} in polarized proton elastic
scattering is estimated using results from an earlier determination of the
spin-flip coupling of the leading Regge poles (cf. T.L.Trueman, Proceedings of
the 16th International Spin Physics Symposium SPIN 2004, eds. F. Bradamante et
al, World Scientific, 2005.) The required Regge cuts are estimated using the
absorptive Regge model. This estimate is then used to determine the sensitivity
of experiments at RHIC to the presence of the Odderon.Comment: based on presentation at RBCR workshop: Odderon Searches at RHIC,
Sept.27-29, 200
Energy Dependence of pp and p-carbon CNI analyzing power
The method described in my RHIC Spin Note (hep-ph/305085) is applied to
recently reported data from RHIC experiments in order to obtain values for the
spin-flip Regge couplings. The data comes from both 100 GeV/c proton elastic
scattering on a carbon target and on the recently commissioned polarized
hydrogen gas jet target. These couplings are used to predict the analyzing
power for proton-carbon scattering at the top RHIC fixed target energy of 250
GeV/c and for scattering at RHIC collider energy.Comment: for proceedings of SPIN200
Electroweak Theory Without Higgs Bosons
A perturbative SU(2)_L X U(1)_Y electroweak theory containing W, Z, photon,
ghost, lepton and quark fields, but no Higgs or other fields, gives masses to
W, Z and the non-neutrino fermions by means of an unconventional choice for the
unperturbed Lagrangian and a novel method of renormalisation. The
renormalisation extends to all orders. The masses emerge on renormalisation to
one loop. To one loop the neutrinos are massless, the A -> Z transition drops
out of the theory, the d quark is unstable and S-matrix elements are
independent of the gauge parameter xi.Comment: 27 pages, LaTex, no figures; revised for publication; accepted by
Int. J. Mod. Phys. A; includes biographical note on A. F. Nicholso
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