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Pion structure function; renormalisation constant; compositeness; unitarity; Bjorken scaling; analyticity

Using recent data on pion structure function and a rigorous inequality obtained recently using unitarity analyticity and Bjorken scaling a numerical upper bound on the wave-function-renormalisation constant of pion is computed. By the (somewhat drastic) act of neglecting the sea, it is shown that the bare part of the pion can be no more than 38%.

M K Parida¹

1. Post-Graduate Department of Physics, Sambalpur University, Jyoti Vihar, Burla - 768 017, India

Published

July 1980

Manuscript received

11 March 1980

Manuscript revised

19 May 1980