Polarization in ■ decays

作者：韩童竹; 平荣刚; 罗涛; 许广智

来源：Chinese Physics C, 2020, 44(01): 14-18.

Measurements of decay asymmetry parameters of charmed baryons,e.g.,■,provide more data to test the W-emission and W-exchange mechanisms controlled by strong and weak interactions.Taking advantage of the spin polarization in charmed baryon decays,we investigate the possibility to measure weak decay asymmetry parameters in thee+e-→■ process.We analyze the transverse polarization spontaneously produced in this process and the spin transfer in the subsequent ■ decays.The sensitivity to measure the asymmetry parameters is estimated for the decay ■→■.

• 单位
  复旦大学; 中国科学院大学; 辽宁大学