Polarization Phenomena in Fragmentation of Deuterons to Pions and Non-Nucleon Degrees of Freedom in the Deuteron

Details Polarization Phenomena in Fragmentation of Deuterons to Pions and Non-Nucleon Degrees of Freedom in the Deuteron Polarization Phenomena in Fragmentation of Deuterons to Pions and Non-Nucleon Degrees of Freedom in the Deuteron

2001-12-16

arxiv.org/abs/hep-ph/0112215v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

3 pages, 2 figures, uses epsfig.sty and wrapfig.sty, Talk given at 9th International Workshop on High-Energy Spin Physics (SPI

Scientific paper

The fragmentation of deuterons into pions emitted forward in the kinematic region forbidden for free nucleon-nucleon collisions is analyzed. It is shown that the inclusion of the non-nucleon degrees of freedom in a deuteron allows to describe the experimental data about inclusive pion spectrum rather satisfactory and improves the description of data concerning the deuteron analyzing power T_{20}. The experimental data show the positive sign and very small values, less than 0.2, of T_{20} what can't be reproduced by the calculations ignoring these degrees of freedom.

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