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preprints:1997:ttp97-30 [2016/03/17 11:03] (current)
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 +====== TTP97-30 Effects of Jet Azimuthal Angular Distributions on Dijet Production Cross Sections in DIS  ====== 
 +  
 +  
 +   <hidden TTP97-30  Effects of Jet Azimuthal Angular Distributions on Dijet Production Cross Sections in DIS  > A Monte Carlo study of the azimuthal angular distribution 
 + around the virtual boson-proton beam axis for dijet events  
 + in DIS at HERA is presented. 
 + In the presence of typical acceptance cuts on the jets in the 
 + laboratory frame, the azimuthal distribution 
 + is dominated by  kinematic effects rather than the 
 + typical $\cos\phi$ and $\cos 2\phi$ dependence  
 + predicted by the  QCD matrix elements. 
 + This implies that the $\phi$ dependent part  
 + of the QCD matrix elements contributes even to the dijet  production  
 + cross section. Neglecting this $\phi$ dependence  
 + leads to an error of about 5-8\% in the production cross 
 + section for typical acceptance cuts in the laboratory frame. 
 + We also present first NLO results on the $\phi$-decorrelation 
 + of the jets through NLO effects. 
 +  
 + </hidden> 
 +|**Erwin Mirkes and Stefan Willfahrt**  |  
 +|** Phys. Lett. B414 205-209 1997  **  | 
 +| {{preprints:1997:ttp97-30.pdf|PDF}} {{preprints:1997:ttp97-30.ps|PostScript}} [[http://arxiv.org/abs/hep-ph/9708231|arXiv]]   | 
 +| |