中国科学技术大学学报 ›› 2016, Vol. 46 ›› Issue (4): 282-285.DOI: 10.3969/j.issn.0253-2778.2016.04.004
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TODYSHEV K.Yu.
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摘要： 基于新西伯利亚VEPP-4M正负电子对撞机的KEDR探测器采集的数据，报道了质心能量在312～372 GeV之间7个能量点的Ruds和R值的精确测量结果.同时报道了J/ψ共振态衰变的电子和强子的联合分宽度.
关键词: R值测量, J/ψ共振态, 粲偶素
Abstract: The result is presented of precise measurement the values of Ruds and R at seven points of the center-of-mass energy between 312 and 372 GeV based on the data collected with the KEDR detector at the VEPP-4M e+e- collider in Novosibirsk. Also present is the preliminary result of determination of the product of the electron partial width by the branching fraction into hadrons of J/ψ resonance.
Key words: R measurement, J/ψ resonance, charmonium
TODYSHEV K.Yu.， (KEDR合作组). VEPP-4M对撞机上KEDR探测器的最新结果[J]. 中国科学技术大学学报, 2016, 46(4): 282-285.
TODYSHEV K.Yu., (for the KEDR collaboration). Recent results from the KEDR detector at the VEPP-4M[J]. Journal of University of Science and Technology of China, 2016, 46(4): 282-285.
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链接本文: http://just-cn.ustc.edu.cn/CN/10.3969/j.issn.0253-2778.2016.04.004
http://just-cn.ustc.edu.cn/CN/Y2016/V46/I4/282
