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Research Fellows Directory

Lei Li

Dr Lei Li

Research Fellow


University of Oxford

Research summary

There remains no explanation for the CP violation that must be present in the early universe to result in our current matter dominated universe. Searches for

CPV beyond the Standard model are of utmost importance to understand the character of any new physics. Essential inputs for the study of CPV are the charm

strong-phase parameters in a range of charm meson decays. The BESIII experiment has collected the largest sample of psi(3770) to DD decays which is the

best environment in which to measure the charm strong phases due to the quantum entanglement of the two charm mesons. This dataset is unexploited. In

this proposal 4 different decay channels, that are expected to have the highest impact on future CPV studies at LHCb and BELLE2, will be studied and charm

strong phase parameters measured in regions of phase space. With this input, it is anticipated that the LHCb and BELLE-2 experiments could reach the sensitivity in

their data required to observe the presence of new-physics effects.

Interests and expertise (Subject groups)

Grants awarded

Measurement of charm strong-phase parameters using the Psi(3770) dataset at BESIII

Scheme: Newton International Fellowships

Dates: Mar 2018 - Mar 2020

Value: £99,000

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