Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1995-06-23
Phys.Rev. D53 (1996) 6374-6380
Physics
High Energy Physics
High Energy Physics - Phenomenology
19 pages, TeX, 5 postscipt figures, uses epsf.tex available at http://phenom.physics.wisc.edu/pub/preprints/1995/madph-95-861.
Scientific paper
10.1103/PhysRevD.53.6374
We calculate decays of a Standard Model Higgs boson to a virtual massive particle and discuss how this depends on the massive particle total width. If the partial width of Higgs to a virtual massive particle can be measured this gives a measurement of that massive particle's width. We discuss how one would go about measuring these partial widths of a Higgs experimentally, and how this could lead to a measurement of the $W$ boson and $t$ quark width. For the latter extreme dependence on the Higgs mass and the small $H\to tt^*$ branching ratios mean that little can be learnt about the $t$ quark width. For the former there is also large dependence on the Higgs mass; however this can be removed by taking the ratio of $H\to WW^*$ decays to $H\to ZZ^*$ decays. This ratio also has the advantage of being fairly insensitive to physics beyond the Standard Model. Unfortunately, for Higgs masses of interest the $H\to ZZ^*$ branching ratio is small enough that we require many 1000's of tagged Higgs decays before an accurate measurement of the $W$ width can be made. This is likely to be hard experimentally.
No associations
LandOfFree
Finite width effects in Higgs decays as a means of measuring massive particle widths does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Finite width effects in Higgs decays as a means of measuring massive particle widths, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Finite width effects in Higgs decays as a means of measuring massive particle widths will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-195768