Charm baryon spectroscopy at CDF
Charm baryon spectroscopy at CDF
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CDF 的 Charm 重子光谱
DOI：
10.22323/1.120.0180
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
F. C. Collaboration
中科院分区：
文献类型：
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作者：
F. Wick;F. C. Collaboration
由于具有出色的质量分辨率和大量可用数据，位于Tevatron质子-反质子加速器上的CDF实验可以精确测量各种状态的光谱特性，如质量和衰变宽度。这是用来检查的第一个轨道荷载Λc重子共振Λc(2595)和Λc(2625),在衰减通道Λ+π+π,以及Λ旋转励磁的Σc(2455)和Σc(2520)在其衰变Λ+π和Λ+π+最终状态数据样本对应一个集成的5.2 l uminosity fb 1。我们给出了相对于Λc和这些状态的衰变宽度的质量差的测量，使用比以前的实验高得多的统计数据。
Due to an excellent mass resolution and a large amount of available data, the CDF experiment, located at the Tevatron proton-antiproton accelerator, al lows the precise measurement of spectroscopic properties, like mass and decay width, of a variety of states. This was exploited to examine the first orbital excitations of the Λc baryon, the resonances Λc(2595) and Λc(2625), in the decay channel Λ + π + π , as well as the Λc spin excitations Σc(2455) and Σc(2520) in its decays to Λ + π and Λ + π + final states in a data sample corresponding to an integrated l uminosity of 5.2 fb 1 . We present measurements of the mass differences with respect to the Λc and the decay widths of these states, using significantly higher statisti cs than previous experiments.