Deuteron and anti-deuteron production in Z decays has been observed in the ALEPH experiment at LER The production rate of anti-deuterons is measured to be (5.9 +/- 1.8 +/- 0.5) x 10(-6) per hadronic Z decay in the anti-deuteron momentum range from 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 decays. These measurements indicate that the production of anti-deuterons is suppressed in e(+)e(-) collisions compared to that in pp and photoproduction collisions. (c) 2006 Elsevier B.V. All rights reserved.
Deuteron and anti-deuteron production in e(+)e(-) collisions at the Z resonance RID C-6238-2011 RID G-1279-2010
SELVAGGI, Giovanna;NUZZO, Salvatore Vitale;DE PALMA, Mauro
2006-01-01
Abstract
Deuteron and anti-deuteron production in Z decays has been observed in the ALEPH experiment at LER The production rate of anti-deuterons is measured to be (5.9 +/- 1.8 +/- 0.5) x 10(-6) per hadronic Z decay in the anti-deuteron momentum range from 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 decays. These measurements indicate that the production of anti-deuterons is suppressed in e(+)e(-) collisions compared to that in pp and photoproduction collisions. (c) 2006 Elsevier B.V. All rights reserved.File in questo prodotto:
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