Institute for Theoretical Particle Physics (TTP)

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preprints:2002:ttp02-04 [2016/03/17 11:03] (current)
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 +====== TTP02-04 QCD-corrected spin analysing power of jets in decays of polarized top quarks ====== 
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 +   <hidden TTP02-04  QCD-corrected spin analysing power of jets in decays of polarized top quarks > We present results for the differential distributions of  
 + jets from non-leptonic decays of polarized 
 + top quarks within the Standard Model, including QCD radiative 
 + corrections. Our work extends existing results 
 + which are only available for semileptonic top quark  
 + decays at the parton level.  
 + For $t(\uparrow)\to b$-jet $+2$ light jets  
 + we compute in particular the QCD-corrected top-spin 
 + analysing power of the $b$-quark jet and the least energetic 
 + light jet. The dependence of the results on the choice 
 + of the jet recombination scheme is found to be small. 
 + In addition we compute the spin analysing 
 + power of the thrust axis. Our results constitute a so far  
 + missing ingredient to analyse top quark production and  
 + subsequent non-leptonic decay at next-to-leading order in $\alpha_s$, keeping 
 + the full information on the top quark polarization. 
 + </hidden> 
 +|**A. Brandenburg, Z. G. Si, and P. Uwer**  |  
 +|**  Phys.Lett.  B539 235-241 2002  **  | 
 +| {{preprints:2002:ttp02-04.pdf|PDF}} {{preprints:2002:ttp02-04.ps|PostScript}} [[http://arxiv.org/abs/hep-ph/0205023|arXiv]]   | 
 +| |