Off-diagonal helicity density matrix elements for vector mesons produced in polarized $e^+e^-$ processes
| ISSN: |
1434-6052
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| Source: |
Springer Online Journal Archives 1860-2000
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| Topics: |
Physics
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| Notes: |
Abstract. Final-state $q \bar q$ interactions give origin to nonzero values of the off-diagonal element $\rho_{1,-1}$ of the helicity density matrix of vector mesons produced in $e^+ e^-$ annihilations, as has been confirmed by recent OPAL data on $\phi$ , $D^*$ , and $K^*$ . New predictions are given for $\rho_{1,-1}$ of several mesons produced at large $x_{_\mathrm{E}}$ and small $p_\mathrm{T}$ – i.e., collinear with the parent jet – in the annihilation of polarized $e^+$ and $e^-$ ; the results depend strongly on the elementary dynamics and allow further nontrivial tests of the standard model.
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| Type of Medium: |
Electronic Resource
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| URL: |