Measurement of Mutual Coulomb Dissociation insNN<mml:mspace/>=<mml:mspace/>130GeVAu+AuCollisions

2001/09/30 by Mickey Chiu, A. Denisov, Alexei Denisov +9 · 4 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Nuclear physics research studies #Quantum Chromodynamics and Particle Interactions #nucl-ex

paper · pdf · doi:10.1103/physrevlett.89.012302

published as Phys.Rev.Lett.89:012302,2002 · This paper has been submitted for publication in Phys. Rev. Lett

arxiv created 2002/02/18 · openalex publication_date 2002/06/17 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We report on the first measurement of mutual Coulomb dissociation in heavy-ion collisions. We employ forward calorimeters to measure neutron multiplicity at beam rapidity. The cross section for simultaneous electromagnetic breakup of Au nuclei at a nucleon-nucleon center of mass energy √s_NN\phantom\rule0ex0ex=\phantom\rule0ex0ex130GeV is \ensuremathσ_MCD\phantom\rule0ex0ex=\phantom\rule0ex0ex3.67\ifmmode±\else\textpm\fi0.26 barns, which is comparable to the geometrical cross section. The ratio of the electromagnetic to the total cross section is in good agreement with calculations, as is the neutron multiplicity distribution.

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