The Effects of the Massless O(alpha_s^2), O(αα_s), O(α^2) QCD and QED Corrections and of the Massive Contributions to Gamma(H^0\rightarrow b\overline{b})
| dc.creator | Kataev, A. L. | |
| dc.creator | Kim, V. T. | |
| dc.date | 1993-04-21 | |
| dc.date.accessioned | 2026-07-07T03:56:02Z | |
| dc.date.available | 2026-07-07T03:56:02Z | |
| dc.description | We consider in detail various theoretical uncertainties of the perturbative predictions for the decay width of $H^0\rightarrow b\overline{b}$ process in the region $50\ GeV< M_H\leq 2M_W$. We calculate the order $O(α_s^2)$-contributions to the expression for $Γ_{Hb\overline{b}}$ through the pole quark mass and demonstrate that they are important for the elimination of the numerical difference between the corresponding expression and the one through the running $b$-quark mass. The order $O(αα_s)$ and $O(α^2)$ massless and order $O(m_b^2/M_H^2)$ massive corrections to $Γ_{Hb\overline{b}}$ are also calculated. The importance of the latter contributions for modeling of the threshold effects is demonstrated. The troubles with identifying of the 4 recent L3 events $e^+e^-\rightarrow l^+l^-γγ$ with the decay of a Standard Higgs boson are discussed. | |
| dc.description | 16 pages, 6 figures (can be optained by mail after the request from the authers, e-mails: kataev@inucres.msk.su; kim@lnpi.spb.su); LATEX, modified version of ENSLAPP.-A.-407/92 preprint | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9304282 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9304282 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/44788 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | The Effects of the Massless O(alpha_s^2), O(αα_s), O(α^2) QCD and QED Corrections and of the Massive Contributions to Gamma(H^0\rightarrow b\overline{b}) | |
| dc.type | text |