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1 IPNL - Institut de Physique Nucléaire de Lyon 2 Laboratoire de Physique Théorique

Abstract : A first part lists basic rules, taken from the string- and multiperipheral models, that a recursive quark fragmentation model should obey. A second part describes spin effects given by the classical -string + 3P0- mechanism of quark-antiquark pair creation, in pseudoscalar and vector meson production: Collins effect, jet handedness and -hidden spin- effects in unpolarized experiments. The last part constructs a recursive quantum-mechanical model of spin-dependent fragmentation. In a -ab initio- approach an integral equation must be solved as a preliminary task. With a -renormalized input-, this task is reduced to an ordinary integration. A spin-dependent generalization of the symmetric Lund model is obtained.





Author: X. Artru - Z. Belghobsi -

Source: https://hal.archives-ouvertes.fr/



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