Probing for the charm content of B and Y mesons -: art. no. 071501

被引：27

作者：

Chang, CHV ^{[1
]}

Hou, WS

机构：

[1] Natl Taiwan Normal Univ, Dept Phys, Taipei 117, Taiwan

[2] Natl Taiwan Univ, Dept Phys, Taipei, Taiwan

来源：

PHYSICAL REVIEW D | 2001年 / 64卷 / 07期

关键词：

D O I：

10.1103/PhysRevD.64.071501

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A slow J/psi bump exists in the inclusive B -->J/psi +X spectrum, while the softness of the J/psi spectrum in Y(1S)-->J/psi +X decay is in strong contrast to expectations from the color octet mechanism. We propose intrinsic charm as the explanation: the former is due to (B) over bar -->J/psiD pi,, with three charm quarks in the final state; the latter is just a small fraction of Y(1S)-->(c(c) over bar)(slow)+2 "jet" events, where the slow moving c(c) over bar system evolves into D-(*) pairs. An experimental search for these phenomena at B factories and the Fermilab Tevatron is strongly urged, as the implications go beyond QCD.

引用

页码：art. no. / 071501

页数：4

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