Can we distinguish energy loss from hadron absoprtion?

Details Can we distinguish energy loss from hadron absoprtion? Can we distinguish energy loss from hadron absoprtion?

2005-10-31

arxiv.org/abs/nucl-th/0510090v2

Acta Phys.Hung. A27 (2006) 189-192

Physics

Nuclear Physics

Nuclear Theory

4 pages, 1 figure. Poster proceedings of Quark Matter 2005 (QM2005), Budapest, Aug 2005. v2: a few typos corrected

Scientific paper

Knowing whether a hadron is formed inside or outside the nuclear medium is very important for correctly interpreting jet quenching in heavy-ion collisions. The cleanest experimental environment to study the space-time evolution of hadronization is semi-inclusive DIS on nuclear targets. Two frameworks are presently competing to explain the observed attenuation of hadron production: quark energy loss, with hadron formation outside the nucleus, and nuclear absorption with hadronization starting inside the nucleus. I demonstrate that the observed approximate A^(2/3) scaling of experimental data cannot conclusively establish the correctness of either energy loss or absorption.

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