Measuring the top Yukawa coupling to a heavy Higgs boson at future e(+) e(-) linear colliders

Citation
J. Alcaraz et Er. Morales, Measuring the top Yukawa coupling to a heavy Higgs boson at future e(+) e(-) linear colliders, PHYS REV L, 86(17), 2001, pp. 3726-3729
Citations number
17
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
0031-9007 → ACNP
Volume
86
Issue
17
Year of publication
2001
Pages
3726 - 3729
Database
ISI
SICI code
0031-9007(20010423)86:17<3726:MTTYCT>2.0.ZU;2-K
Abstract
If the Higgs boson mass is greater than 350 GeV the top quark Yukawa coupli ng can be determined using the Higgs resonant contribution to t (t) over ba r production from (WW-)-W-* fusion at high energy e(+)e(-) linear colliders . We have evaluated the significance with which the signal of a Higgs decay ing to t (t) over bar pairs could be observed at future e(+)e(-) colliders, with center of mass energies of 800 GeV and 1 TeV, and an integrated lumin osity of 1 ab(-1). We find that a signal significance greater than 5 sigma and a relative error in the toil Yukawa measurement better than 10% can be achieved at these facilities. for Higgs boson masses in the ranges of 350-5 00 GeV and 350-650 GeV, respectively.