### Abstract

The exclusive production cross sections for [Formula Presented] and [Formula Presented] mesons have been measured in proton-proton reactions at [Formula Presented] The observed [Formula Presented] cross section ratio is [Formula Presented] After phase space corrections, this ratio is enhanced by about an order of magnitude relative to naive predictions based upon the Okubo-Zweig-Iizuka (OZI) rule, in comparison to an enhancement by a factor [Formula Presented] previously observed at higher beam momenta. The modest increase of this enhancement near the production threshold is compared to the much larger increase of the [Formula Presented] ratio observed in specific channels of [Formula Presented] annihilation experiments. Furthermore, differential cross section results are also presented which indicate that although the [Formula Presented] meson is predominantly produced from a [Formula Presented] proton-proton entrance channel, other partial waves contribute significantly to the production mechanism at this beam momentum.

Original language | English (US) |
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Number of pages | 1 |

Journal | Physical Review C - Nuclear Physics |

Volume | 63 |

Issue number | 2 |

DOIs | |

State | Published - 2001 |

### ASJC Scopus subject areas

- Nuclear and High Energy Physics

## Fingerprint Dive into the research topics of '[Formula Presented] and [Formula Presented] meson production in [Formula Presented] reactions at [Formula Presented]'. Together they form a unique fingerprint.

## Cite this

*Physical Review C - Nuclear Physics*,

*63*(2). https://doi.org/10.1103/PhysRevC.63.024004