抄録
We present measurements of the production of D-s mesons relative to D+s mesons as functions of xF and of p2t for a sample of 2445 Ds decays to φπ. The Ds mesons were produced in Fermilab experiment E791 with 500 GeV/c π- mesons incident on one platinum and four carbon foil targets. The acceptance-corrected integrated asymmetry in the xF range -0.1 to 0.5 for D∓s mesons is 0.032 ± 0.022 ± 0.022, consistent with no net asymmetry. We compare the results as functions of xF and p2t to predictions and to the large production asymmetry observed for D± mesons in the same experiment. These comparisons support the hypothesis that production asymmetries come from the fragmentation process and not from the charm quark production itself.
本文言語 | 英語 |
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ページ(範囲) | 230-236 |
ページ数 | 7 |
ジャーナル | Physics Letters B |
巻 | 411 |
号 | 1-2 |
DOI | |
出版ステータス | 出版済み - 1997/10/09 |
ASJC Scopus 主題領域
- 核物理学および高エネルギー物理学