A study of spin alignment of ρ(770)± and ω(782) mesons in hadronic Z0 decays

, OPAL Collaboration (2000) A study of spin alignment of ρ(770)± and ω(782) mesons in hadronic Z0 decays. European Physical Journal C: Particles and Fields, 16 (1). pp. 61-70. ISSN 1434-6044

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Abstract

The helicity density matrix elements ρ00 of ρ(770)± and ω(782) mesons produced in Z0 decays have been measured using the OPAL detector at LEP. Over the measured meson energy range, the values are compatible with 1/3, corresponding to a statistical mix of helicity −1, 0 and +1 states. For the highest accessible scaled energy range 0.3 <xE< 0.6, the measured ρ00 values of the ρ± and the ω are 0.373 ± 0.052 and 0.142 ± 0.114, respectively. These results are compared to measurements of other vector mesons.

Item Type:
Journal Article
Journal or Publication Title:
European Physical Journal C: Particles and Fields
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2200/2201
Subjects:
ID Code:
82859
Deposited By:
Deposited On:
14 Nov 2016 15:20
Refereed?:
Yes
Published?:
Published
Last Modified:
09 Nov 2020 01:19