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有奖评新闻
暂命名为X1835,可能是人类寻找了几十年的新型强子
晨报讯(记者王大鹏)昨天,北京谱仪国际合作组在中科院高能物理研究所宣布了一项重大发现:由100多位以中国科学家为主的研究人员在北京正负电子对撞机上进行的北京谱仪实验中,观测到了一个新粒子,暂时命名为X1835(它名字中的X代表了它的基本结构仍未确定),这有可能是人类寻找了几十年的新型强子,同时有可能突破现有的普通夸克模型,意义十分重大。这个结果已在国际著名杂志《物理评论快报》(PhysicalReviewLetters)上发表,并引起了国际高能物理界的高度重视。
1974年,丁肇中教授和里克特教授分别独立地发现了J/ψ粒子,并为此获得诺贝尔奖。自从丁肇中教授发现粲粒子J/ψ以后,粲粒子的衰变被公认为是寻找和研究这些新型粒子的理想场所。但是新型强子的寻找已进行了几十年,至今尚未确认一个,在过去两年中,包括北京谱仪实验在内的世界上许多高能物理实验中发现了许多新粒子,很难用普通夸克模型来解释。
去年初,以中国科学家为主的研究人员在北京谱仪实验中发现了这个新粒子,该新发现在2005年7月1日于瑞典举行的国际规模最大高能物理大会上报告时,大会主席评价说,“这是2005年最重要的成果”。 |
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今日运程如何?财运、事业运、桃花运,给你详细道来!!! |
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月亮之上 |
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秋天不回来 |
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求佛 |
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千里之外 |
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香水有毒 |
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吉祥三宝 |
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天竺少女 |
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一个人哭 |
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退后 |
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断了的弦 |
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还是朋友 |
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水晶蜻蜓 |
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唱给你的歌 |
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