Transverse mass as a means of measuring the W width at the Tevatron

Details Transverse mass as a means of measuring the W width at the Tevatron Transverse mass as a means of measuring the W width at the Tevatron

1996-08-15

arxiv.org/abs/hep-ph/9608332v2

Phys.Lett. B392 (1997) 216-222

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, plain LaTeX, uses epsf.sty. 6 postscript figures. 1 added reference, no change to the text

Scientific paper

10.1016/S0370-2693(96)01493-1

At the Tevatron the transverse mass is used to separate on mass shell from off mass shell W production; and the rate of off mass shell W production gives a measure of the W width. We look at alternative variables to see if the separation of on and off mass shell W's can be improved, and hence give a better measure of the W width. We find that the transverse mass is very close to the optimal variable for separating on from off mass shell W decay, and hence there is little to be gained by using other, more complicated, variables. This happens because if the transverse mass is above the W mass, the W is guaranteed to be produced off mass shell.

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