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preprints:1997:ttp97-35 [2016/03/17 11:03] (current)
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 +====== TTP97-35 Lepton pair production by a high energy photon in a   strong electromagnetic field ====== 
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 +   <hidden TTP97-35  Lepton pair production by a high energy photon in a   strong electromagnetic field > Using impact-factor representation, we consider the 
 + lepton pair production by an incident 
 + high-energy 
 + photon in a strong electromagnetic 
 + field of a nucleus. By summing leading terms of 
 + perturbation series, we obtain 
 + simple formula for the amplitude, valid 
 + to all orders in ${\cal O}(\alpha Z)$ 
 + and arbitrary field of the nucleus. 
 + Using these results, 
 + we derive, in a simple manner, the results for the lepton 
 + pair production by a virtual incident photon 
 + in a Coulomb field. 
 + For real incident photon our results coincide 
 + with the known ones. 
 + Also, a particular example of a 
 + non-Coulomb potential is discussed in some detail. 
 + </hidden> 
 +|**a high energy photon in a   strong electromagnetic field</EM></B></A></FONT>**  |  
 +|** Phys. Rev. D 57 4025 1998  **  | 
 +| {{preprints:1997:ttp97-35.pdf|PDF}} {{preprints:1997:ttp97-35.ps|PostScript}} [[http://arxiv.org/abs/hep-ph/9709352|arXiv]]   | 
 +| |