Document Type

Journal Article

Department/Unit

Department of Physics

Language

English

Abstract

Using the helicity formalism, we calculate the combined angular distribution function of the two gamma photons and the electron in the cascade process pp → 3D2 → χJ+γ1 → (ψ+γ2)+γ1 → (e+ + e−)+γ1+γ2 (J=0,1,2), when p and p are arbitrarily polarized. We also present the partially integrated angular distribution functions in six different cases. Our results show that by measuring the two-particle angular distribution of γ 1 and γ 2 and that of γ 1 and e −, one can determine the relative magnitudes as well as the relative phases of all the helicity amplitudes in the two radiative decay processes 3D2→χ J +γ 1 and χ J →ψ+γ 2. PACS 11.80.Cr - 13.20.Fc

Publication Date

2009

Source Publication Title

The European Physical Journal C - Particles and Fields

Volume

63

Issue

1

Start Page

101

End Page

114

Publisher

Springer Verlag

Peer Reviewed

1

DOI

10.1140/epjc/s10052-009-1091-2

Link to Publisher's Edition

http://dx.doi.org/10.1140/epjc/s10052-009-1091-2

ISSN (print)

14346052

Included in

Physics Commons

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