Electromagnetic Corrections to Hadronic Decays from Lattice QCD

10th International Conference on Kaon Physics

Lubicz, V.^1,2 ; Martinelli, G.^3,4 ; Sachrajda, C.T.^5 ; Sanfilippo, F.^5 ; Simula, S.^6 ; Tantalo, N.^1

Dipartimento di Fisica, Universita Roma Tre, Via della Vasca Navale 84, Rome

I-00146, Italy^1

INFN, Sezione di Roma Tre, Via della Vasca Navale 84, Rome

I-00146, Italy^2

Physics Department, INFN, Sezione di Roma la Sapienza, Piazzale Aldo Moro 5, Roma

00185, Italy^3

TH Department, CERN, Geneva 23

CH-1211, Switzerland^4

Department of Physics and Astronomy, University of Southampton, Southampton

S017 1BJ, United Kingdom^5

Dipartimento di Fisica, INFN, Universita di Roma Tor Vergata, Via della Ricerca Scientifica 1, I-00133, United Kingdom^6

关键词: Hadronic decays;    Isospin;    Lattice calculations;    Lattice QCD;    Leptonic decay;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/800/1/012005/pdf
DOI  :  10.1088/1742-6596/800/1/012005

来源: IOP

【 摘 要 】

A new method, recently introduced for the lattice calculation of electromagnetic and isospin corrections to weak decays [1], is discussed. Using this method, for the first time, the electromagnetic effects in the leptonic decay rates π→ μv μ and K¯ → μvμ have been evaluated in lattice QCD. Preliminary results for the electromagnetic corrections to charged (neutral) pion and kaon masses and leptonic decay rates are presented.