Transverse momentum broadening and gauge invariance
classification
✦ hep-ph
keywords
broadeninggaugemomentumtransversecollinearconsequentlydefinitioneffective
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In the framework of the soft-collinear effective theory, we present a gauge invariant definition of the transverse momentum broadening probability of a highly-energetic collinear quark in a medium and consequently of the jet quenching parameter $\hat{q}$.
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