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22-28 July 2018
Kellogg Hotel and Conference Center
EST timezone

QED-corrected Lellouch-Luescher formula for K->\pi\pi decay

Jul 26, 2018, 12:40 PM
103 (Kellogg Hotel and Conference Center)


Kellogg Hotel and Conference Center

219 S Harrison Rd, East Lansing, MI 48824
Weak Decays and Matrix Elements Weak Decays and Matrix Elements


Mr Yiming Cai (University of Maryland, College Park)


A precise Standard Model prediction for the direct CP violation in the K -> \pi\pi decay process is of great importance in confronting experiments and constraining new physics. The state-of-art lattice QCD precision of this process will soon achieve a value for which QED effects can no longer be neglected. The inclusion of QED in such calculations is planned and the formalism to relate the finite-volume matrix element obtained from these calculations to the physical amplitude is underway. Here we present preliminary results on the extension of Lellouch-Luscher formula in presence of QED, therefore providing such formalism for the extraction of physical amplitudes for the K->\pi\pi process with charged initial and/or final states.

Primary authors

Mr Yiming Cai (University of Maryland, College Park) Zohreh Davoudi (University of Maryland)

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