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Measuring the Higgs Branching Fraction into two Photons at Future Linear ee Colliders | | E. Boos
; J.-C. Brient
; D.W. Reid
; H.J. Schreiber
; R.Shanidze
; | | Date: |
29 Nov 2000 | | Journal: | Eur.Phys.J. C19 (2001) 455-461 | | Subject: | hep-ph | | Affiliation: | Moscow State University), J.-C. Brient (Ecole Polytechnique), D.W. Reid (NIKHEF), H.J. Schreiber (DESY Zeuthen), R.Shanidze (Tbilisi State University | | Abstract: | We examine the prospects for measuring the gaga branching fraction of a Standard Model-like Higgs boson with a mass of 120 GeV at the future TESLA linear ee collider, assuming an integrated luminosity of 1 ab$^{-1}$ and center-of-mass energies of 350 GeV and 500 GeV. The Higgs boson is produced in association with a fermion pair via the Higgsstrahlung process ee $ o ZH$, with $Z o$ qq or
n, or the WW fusion reaction $e^+e^- o
u_e ar{
u_e} H$. A relative uncertainty on BF(hgg) of~16% can be achieved in unpolarized ee collisions at $sqrt{s}$=~500 GeV, while for $sqrt{s}$=~350 GeV the expected precision is slightly poorer. With appropriate initial state polarizations $Delta$BF(hgg)/BF(hgg) can be improved to 10%. If this measurement is combined with the expected error for the total Higgs width, a precision of 10% on the gaga Higgs boson partial width appears feasible. | | Source: | arXiv, hep-ph/0011366 | | Services: | Forum | Review | PDF | Favorites | |
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