Upper limits on a possible gluon mass

Upper Limits on a Possible Gluon Mass

Upper Limits on Poisson Processes

This note presents a technique for the calculation of upper limits on Poisson processes at some desired conndence level given a certain number of observed events, an expected number of background events, and uncertainty on both the overall acceptance and the expected background. This hybrid frequentist/Bayes technique represents the standard adopted by the CDF Collaboration in presenting the re...

On Gluon Masses, Colour Symmetry, and a Possible Massive Ninth Gluon

Gluons acquire a determinate mass from quark loop radiative corrrections and selfinteraction, when these are recomputed with the symmetrical theory of generalised functions. The colour symmetry may be U(3) instead of SU(3) . The symmetry breaks spontaneously and the ninth colour SU(3) singlet gluon acquires a very large mass. There may be some experimental support for its existence.

Gluon Mass from Instantons

The gluon propagator is calculated in the instanton background in a form appropriate for extracting the momentum dependent gluon mass. In background-ξ-gauge we get for the mass 400MeV for small p independent of the gauge parameter ξ. E–Mail: [email protected]–muenchen.de

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