Institute for Theoretical Particle Physics (TTP)
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preprints:2006:ttp06-14 [2016/03/17 11:03] (current) – created - external edit 127.0.0.1
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 +====== TTP06-14 Top Quark Mediated Higgs Decay into Hadrons to Order $\alpha_s^5$ ====== 
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 +   <hidden TTP06-14  Top Quark Mediated Higgs Decay into Hadrons to Order $\alpha_s^5$ > We present in analytic form the O(alpha_s^5) correction to the H->gg 
 + partial width of the standard-model Higgs boson with intermediate mass 
 + M_H<2M_t. Its knowledge is useful because the O(alpha_s^4) correction 
 + is sizeable (around 20%). For M_H=120 GeV, the resulting QCD 
 + correction factor reads 
 + 1 + (215/12) alpha_s^(5)(M_H)/pi 
 + + 152.5 (alpha_s^(5)(M_H)/pi)^2 
 + + 381.5 (alpha_s^(5)(M_H)/pi)^3 
 + \approx 1+0.65+0.20+0.02. 
 + The new four-loop correction increases the total Higgs-boson hadronic 
 + width by a small amount of order 1 promille and stabilizes 
 + significantly the residual scale dependence. 
 + </hidden> 
 +|**P.A. Baikov and K.G. Chetyrkin**  |  
 +|**  Phys. Rev. Lett.  97 061803 2006  **  | 
 +| {{preprints:2006:ttp06-14.pdf|PDF}} {{preprints:2006:ttp06-14.ps|PostScript}} [[http://arxiv.org/abs/hep-ph/0604194|arXiv]]   | 
 +| |