| Autor: |
M. W. Gettner, P. L. Rothwell, E. von Goeler, G. Lutz, G. Glass, D. Earles, Roy Weinstein, R. C. Chase |
| Rok vydání: |
1969 |
| Předmět: |
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| Zdroj: |
Physical Review Letters. 23:1521-1526 |
| ISSN: |
0031-9007 |
| DOI: |
10.1103/physrevlett.23.1521 |
| Popis: |
Data on photoproduction of muon pairs are reported and compared with quantum electrodynamics. A new average value of ${B}_{\ensuremath{\rho}}=\frac{({\ensuremath{\rho}}^{0}\ensuremath{\rightarrow}{\ensuremath{\mu}}^{+}+{\ensuremath{\mu}}^{\ensuremath{-}})}{({\ensuremath{\rho}}^{0}\ensuremath{\rightarrow}\mathrm{all})}=(8.2\ifmmode\pm\else\textpm\fi{}1.6)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}5}$ is obtained. Comparison with ${B}_{\ensuremath{\rho}}$ for electron pairs provides a valid experimental confirmation, to "distances" of 1.6\ifmmode\times\else\texttimes\fi{}${10}^{\ensuremath{-}14}$ cm, of ($e, \ensuremath{\mu}$) universality for vertices involving timelike photons. We interpret the paradoxical agreement of values of ${B}_{\ensuremath{\rho}}$ for photoproduction experiments with those for colliding beams in terms of the $\ensuremath{\rho}$, $\ensuremath{\omega}$ phase. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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