PKU HEP Seminar and Workshop (北京大学高能物理组)

Calculation of the mass difference between the long- and short-lived K mesons for physical quark masses with lattice QCD

by Dr Bi-Geng Wang (Columbia University)

Asia/Shanghai
B105 (CHEP)

B105

CHEP

West Building, School of Physics, PKU
Description
The two neutral kaon states in nature, the $K_L$ (long-lived) and $K_S$ (short-lived) mesons, are the two time-evolution eigenstates of the $K^0 - \overline{K^0}$ mixing system. The prediction of their mass difference $\Delta m_K$ based on the Standard Model is an important goal of lattice QCD. In this talk, I will present the details about evaluating kaon mixing process with lattice QCD and preliminary results from a calculation of $\Delta m_K$ performed on an ensemble of $64^3 \times 128$ gauge configurations with inverse lattice spacing of 2.36 GeV and physical quark masses. Further discussion of the methods employed and the resulting systematic errors will be given.
Participants
  • Andrew Levin
  • Bigeng Wang
  • Bin Li
  • Ce Zhang
  • Cheng Tansheng
  • Dayong Wang
  • Jiao Zhang
  • Ling-Xiao Xu
  • ning chen
  • Qian-Fei Xiang
  • Qing-Hong Cao
  • Rui Zhang
  • shu-yuan guo
  • Ti Gong
  • Xu Feng
  • Yan-Qing Ma
  • 世平 和
  • 东 胡
  • 广娟 王
  • 律 吕
  • 星 王
  • 李林 杨
  • 浩然 蒋
  • 璐 孟
  • 立叶 肖