Exclusive Exponentiation in the Monte Carlo Yennie-Frautschi-Suura Approach
A closer look is taken into various types of the so-called “exponentiation” procedures in QED. In particular the question of the difference between the common (ad hoc) inclusive exponentiation and the exclusive Yennie-Frautschi-Suura exponentiation is examined. The discussion is limited to the initial state bremsstrahlung in e + e - annihilation. Numerical results from the YFS2 Monte Carlo are used to illustrate the discussion.
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