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preprints:2004:ttp04-26 [2016/03/15 20:39] (current)
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 +====== TTP04-26 The radiative return and form factors at large $Q^2$ ====== 
 +<hidden TTP04-26 ​ The radiative return and form factors at large $Q^2$ > The measurement of the pion form factor and, more 
 + ​generally,​ of the cross section for electron--positron annihilation 
 + into hadrons through the radiative return has become an important 
 + task for high luminosity colliders such as the $\Phi$- or 
 + ​$B$-meson factories. For a detailed understanding and analysis 
 + of this reaction, the construction of a Monte Carlo program,  
 + ​PHOKHARA,​ has been undertaken. A brief overview of 
 + the most recent developments is presented, which include the combination 
 + of initial- and final-state radiation in the case of two-pion 
 + ​production. Baryon pair production is now included and  
 + the pion form factor is extended into the region of large $Q^2$.  
 + A model for the kaon 
 + form factor is discussed which is  
 + ​fitted to $K^+K^-$ and $K^0\bar{K}^0$ data and which  
 + leads to predictions for the $\tau$-decay into $K^-K^0\nu$. 
 + </​hidden>​ 
 +|**J.H. Kuhn** ​ |  
 +|**      Proceedings of the Eighth International Workshop on Tau Lepton Physics (TAU 04) 14-17 September 2004, Nara, Japan **  | 
 +| {{preprints:​2004:​ttp04-26.pdf|PDF}} {{preprints:​2004:​ttp04-26.ps|PostScript}} ​  | 
 +| |