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arXiv · hep-ex/0604023

Deuteron and Anti-deuteron Production in e+e- Collisions at the Z Resonance

The ALEPH Collaboration·S. Schael
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Abstract

Deuteron and anti-deuteron production in Z decays has been observed in the ALEPH experiment at LEP. The production rate of anti-deuterons is measured to be 5.9+-1.8+-0.5 10^-6 per hadronic Z decay in the anti-deuteron momentum range 0.62 to 1.03 GeV/c. The coalescence parameter B_2, which characterizes the likelihood of anti-deuteron production, is measured to be 0.0033+-0.0013 GeV^2 in Z dedays. These measurements indicate that the production of anti-deuterons is suppressed in e+e- collisions compared to pp and photoproduction collisions.

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The ALEPH Collaboration, S. Schael. 2006-04-11. Deuteron and Anti-deuteron Production in e+e- Collisions at the Z Resonance. https://doi.org/10.1016/j.physletb.2006.06.043

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