Differences Between the Pole and On-Shell Masses and Widths of the Higgs Boson

Details Differences Between the Pole and On-Shell Masses and Widths of the Higgs Boson Differences Between the Pole and On-Shell Masses and Widths of the Higgs Boson

1998-05-20

arxiv.org/abs/hep-ph/9805390v1

Phys.Rev.Lett. 81 (1998) 1373-1376

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages (Latex), 3 figures (Postscript)

Scientific paper

10.1103/PhysRevLett.81.1373

The differences between the on-shell mass and width of the Higgs boson and their pole counterparts are evaluated in leading order. For a heavy Higgs boson, they are found to be sensitive functions of the gauge parameter and become numerically large over a class of gauges that includes the unitary gauge. For a light Higgs boson, the differences remain small in all gauges. The pinch-technique mass and width are found to be close to their pole counterparts over a large range of Higgs boson masses.

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