12,000

We have over 12,000 students, from over 100 countries, within one of the safest campuses in the UK

93%

93% of Lancaster students go into work or further study within six months of graduating

Home > Research > Publications & Outputs > Deuteron and anti-deuteron production in e+ e- ...
View graph of relations

« Back

Deuteron and anti-deuteron production in e+ e- collisions at the Z resonance.

Research output: Contribution to journalJournal article

Published

Journal publication date10/08/2006
JournalPhysics Letters B
Journal number3-4
Volume639
Number of pages10
Pages192-201
Original languageEnglish

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 from 0.62 to 1.03 GeV/c. The coalescence parameter B2, which characterizes the likelihood of anti-deuteron production, is measured to be 0.0033±0.0013 GeV2 in Z decays. These measurements indicate that the production of anti-deuterons is suppressed in e+e− collisions compared to that in pp and photoproduction collisions.