Measurement of Higgs couplings and mass in e+e- collisions at CLIC in the sqrt(s) range of 350 GeV - 3 TeV

0427556 - FZÚ 2015 RIV IT eng C - Konferenční příspěvek (zahraniční konf.)
Laštovička, Tomáš
Measurement of Higgs couplings and mass in e+e- collisions at CLIC in the sqrt(s) range of 350 GeV - 3 TeV.
Proceedings of Science. Trieste: S I S S A, 2013, s. 1-7, 295. ISSN 1824-8039.
[EPS-HEP 2013 - The European Physical Society Conference on High Energy Physics 2013. Stockholm (SE), 17.07.2013- 24.07.2013]
Institucionální podpora: RVO:68378271
Klíčová slova: Higgs boson * CLIC * CERN * Higgs branching ratios * Higgs mass * linear accelerator
Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
http://pos.sissa.it/archive/conferences/180/295/EPS-HEP%202013_295.pdf

A future linear e+e- collider running at center-of-mass energies in the range from 350 GeV to 3 TeV provides excellent possibilities for Higgs precision measurements. Precision Higgs (and top) measurements can be performed around 350 GeV, where the Higgs is studied in a model independent way through its recoil against a Z boson in the Higgs-strahlung process, providing not only an accurate mass measurement but also direct measurements of the branching ratios for most boson and fermion decay modes, including possible decays to invisible particles. At higher energies, the Higgs boson coupling to top quarks and the Higgs self-coupling can also be measured. For CLIC, these are studied at 1.4 TeV in Higgs production through WW fusion. At even higher energies, the rising WW fusion cross section, together with the higher machine luminosity, allows for the measurement of very small branching ratios. At the ultimate CLIC energy of 3 TeV this provides good precision for the Higgs coupling to muons and a currently unchallenged precision at the 10% level for the Higgs self-coupling. The prospects for these measurements at CLIC are based on detailed detector simulation studies including overlay of background from other physics processes and beam-induced backgrounds.
Trvalý link: http://hdl.handle.net/11104/0233072