Recently, taking advantage of the large volume of data collected by the detector, the BESⅢ International Collaboration successfully measured the decay constant for the charmed meson D^(+) - with the best precision to...Recently, taking advantage of the large volume of data collected by the detector, the BESⅢ International Collaboration successfully measured the decay constant for the charmed meson D^(+) - with the best precision to date.As an unstable particle, the charmed meson D^(+) can decay via many different pathways, each with a different possibility. In the process of the decay, its constituent heavy charm quark can transform itself into other particles, thereby diverting the subsequent decay cascade into a different pathway or a different decay network.展开更多
文摘Recently, taking advantage of the large volume of data collected by the detector, the BESⅢ International Collaboration successfully measured the decay constant for the charmed meson D^(+) - with the best precision to date.As an unstable particle, the charmed meson D^(+) can decay via many different pathways, each with a different possibility. In the process of the decay, its constituent heavy charm quark can transform itself into other particles, thereby diverting the subsequent decay cascade into a different pathway or a different decay network.
