Spin Analysis of Charmed Mesons Produced in <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi>e</mi></mrow><mrow><mo>+</mo></mrow></msup></mrow><mrow><msup><mrow><mi>e</mi></mrow><mrow><mo>−</mo></mrow></msup></mrow></math></span> Annihilation

doi:10.1103/PhysRevLett.39.262

Spin Analysis of Charmed Mesons Produced in $e^{+} e^{-}$ Annihilation

H. K. Nguyen et al.

Phys. Rev. Lett. 39, 262 – Published 1 August 1977

Abstract

We have studied the threshold production and decay angular distribution of neutral charmed mesons produced in $e^{+} e^{-}$ annihilation. We find consistency with the expected spin values of 0 and 1 for the ground and excited states $D$ and $D^{*}$ , respectively. We rule out the alternative spin assignment of 1 for the $D$ and 0 for the $D^{*}$ .