Recent content by mariamskhan

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    Graduate QCD Coulomb Singularity: Quarkonium w/ 2 Gluons

    here is one of the references: http://pos.sissa.it/archive/conferences/032/098/LAT2006_098.pdf
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    Graduate QCD Coulomb Singularity: Quarkonium w/ 2 Gluons

    Ooops, I really forgot to mention this. I'm talking about NRQCD.
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    Graduate QCD Coulomb Singularity: Quarkonium w/ 2 Gluons

    Coulomb singularity appears whenever a virtual gluon is exchanged between quark pair of a meson. The limit that relative velocity of these two quarks tends to zero (to make a bound state for meson) in an expression ~ 1/v (v being realative velocity here) generates this singularity. This is what...
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    Graduate QCD Coulomb Singularity: Quarkonium w/ 2 Gluons

    Hi all, I am just new to work on NLO in QCD. I need to know how a Coulomb singularity in QCD is defined? What is the form/expression of this singularity term? Can anyone explain with an example of any Feynman diagram? I am interested in the case of a quarkonium with two gluons in final state...