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发现Zc（3900）——一个带电类粲偶素共振结构
  • ISSN号：0379-4148
  • 期刊名称：《物理》
  • 时间：0
  • 分类：O562.4[理学—原子与分子物理;理学—物理]
  • 作者机构：[1]中国科学院高能物理研究所,北京100049, [2]北京航空航天大学宇宙中的核物理交叉研究中心,北京100191, [3]北京航空航天大学物理科学与核能工程学院,北京100191
  • 相关基金：国家重点基础研究发展计划（批准号：2009CB825203）、国家自然科学基金（批准号：11235011,10935008,10825524）资助项目;中央高校基本科研业务费专项资金资助项目
作者： 刘智青[1], 沈成平[2,3], 苑长征[1]
关键词： Z_C(3900), 粲偶素, 类粲偶素, 奇特态强子, Zc（3900）, charmonium, channonium-like state, exotic hadron
中文摘要：

北京谱仪（BESⅢ）实验和Belle实验利用两种不同的方法对e＋e-→π＋π-J／ψ过程进行了研究。任π±J／ψ系统中，同时观测到了一个新的带电类粲偶素结构——Zc（3900）。Zc（3900）耦合到粲偶素末态，因此其内部夸克组分应该含有正反粲夸克；同时它还带有电荷，故不可能仪由正反粲夸克组成。Zc（3900）共振态中最少含有4个夸克，极有可能是一个奇特态强子。

英文摘要：

Abstract U sing data samples collected with the BESⅢ detector at an e＋e centre-of-mass en- ergy of 4.26 GeV and with the Belle detector on or near the γ（nS）, n= 1,……, 5, resonances, the e＋e-→π＋π-J/ψ process was investigated through different approaches. Both detectors observed a charged char- monium-like state in the invariant mass distribution of π±J/ψ. This new structure, called Z,.（3900）, couples strongly to a charmonium and is charged, so it cannot be a conventional charmonium state, but can be interpreted as an exotic hadron with at least four quarks.

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期刊信息
  • 《物理》
  • 北大核心期刊（2011版）
  • 主管单位:中国科学院
  • 主办单位:中国物理学会 中国科学院物理研究所
  • 主编：朱星
  • 地址：北京603信箱
  • 邮编：100190
  • 邮箱：physics@aphy.iphy.ac.cn
  • 电话：010-82649470 82649266
  • 国际标准刊号：ISSN：0379-4148
  • 国内统一刊号：ISSN：11-1957/O4
  • 邮发代号:2-805
  • 获奖情况:
  • 2002年中国科协优秀期刊三等奖,2000年度中科院优秀期刊一等奖,2001年入选“中国期刊方阵”,中国期刊方阵“双效”期刊
  • 国内外数据库收录:
  • 俄罗斯文摘杂志,美国化学文摘（网络版）,英国科学文摘数据库,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,中国北大核心期刊（2000版）
  • 被引量:8902