'Buddhaʼs light' of cumulative particles Presented at the International Seminar Quarks-2014, Suzdal', Russia, 2-8 June 2014

We show analytically that in the cumulative particles production off nuclei multiple interactions leads to a glory-like backward-focusing effect. Employing the small phase space method, we arrived at a characteristic angular dependence of the production cross section near the strictly backward direc...

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Bibliographic Details
Published in:Journal of physics. G, Nuclear and particle physics Nuclear and particle physics, 2014-11, Vol.41 (12)
Main Authors: Kopeliovich, V B, Matushko, G K, Potashnikova, I K
Format: Article
Language:English
Subjects:
azimuthal focusing
cumulative particles
nuclear glory phenomenon
Online Access:Get full text
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Summary:We show analytically that in the cumulative particles production off nuclei multiple interactions leads to a glory-like backward-focusing effect. Employing the small phase space method, we arrived at a characteristic angular dependence of the production cross section near the strictly backward direction. This effect takes place for any number of interactions of rescattered particles, either elastic or inelastic (with resonance excitations in intermediate states), when the final particle is produced near the corresponding kinematical boundary. In the final angles interval, including the value , the angular dependence of the cumulative production cross section can have a crater-like (or funnel-like) form. Such a behaviour of the cross section near the backward direction is in qualitative agreement with some of the available data. Explanation of this effect and the angular dependence of the cross section near are presented for the first time
ISSN:0954-3899
1361-6471
DOI:10.1088/0954-3899/41/12/125107