NEW METASTABLE CHARMONIUM AND THE PSI' ANOMALY AT CDF

被引：53

作者：

CLOSE, FE

机构：

[1] Rutherford Appleton Laboratory, Chilton Didcot,

来源：

PHYSICS LETTERS B | 1995年 / 342卷 / 1-4期

关键词：

D O I：

10.1016/0370-2693(94)01360-O

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Production of metastable charmonium states more massive than the psi(3685) is expected in models and could be the source of up to 50% of the psi observed at large p(T) at the Tevatron. Narrow 2(-+), 2(--) c $($) over bar$$ c are predicted at around 3.8 GeV and radially excited 2(3) P-1,P-2 may also have suppressed hadronic widths making these states potentially extra sources of psi(3685). Colour octet components are believed to dominate psi production at the Tevatron which suggests that hybrid charmonium production may also be prominent. Estimates of hybrid production rates and branching ratios into charmonium suggest that metastable hybrids with mass approximate to 4 GeV may play an important role in generating the observed psi(3685),psi(3095)

引用

页码：369 / 374

页数：6

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