Nonrelativistic QCD analysis of bottomonium production at the Fermilab Tevatron

被引：90

作者：

Braaten, E

Fleming, S

Leibovich, AK

机构：

[1] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA

[2] Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada

[3] Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA

来源：

PHYSICAL REVIEW D | 2001年 / 63卷 / 09期

关键词：

D O I：

10.1103/PhysRevD.63.094006

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Recent data from the CDF Collaboration on the production of spin-triplet bottomonium states at the Fermilab Tevatron p (p) over bar collider are analyzed within the NRQCD factorization formalism. The color-singlet matrix elements are determined from electromagnetic decays and from potential models. The color-octet matrix elements are determined by fitting the CDF data on the cross sections for Y(1S), Y(2S), and Y(3S) at large p(T) and the fractions of Y(1S) coming from chi (b)(1P) and chi (b)(2P). We use the resulting matrix elements to predict the cross sections at the Tevatron for the spin-singlet states eta (b)(nS) and h(b)(nP). We argue that eta (b)(1S) may be observable in run II through the decay eta (b)-->J/psi +J/psi.

引用

页数：12

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