The 8th International Workshop on Chiral Dynamics 2015

June 29, 2015 to July 3, 2015
Pisa
Europe/Rome timezone

Masses, decay constants and electromagnetic form-factors with twisted boundary conditions

Jun 29, 2015, 6:00 PM
20m
Aula Magna (Building E, Polo Fibonacci, Pisa)

Aula Magna

Building E, Polo Fibonacci, Pisa

Talk Goldstone Boson Working Group

Speaker

Johan Relefors (Lund University)

Description

The talk will describe the recent work at one-loop Chiral perturbation Theory with twisted boundary conditions [1]. We point out that due to the broken Lorentz and reflection symmetry a number of new terms show up in the expressions. The pseudo-scalar octet masses, axial-vector and pseudo-scalar decay constants and electromagnetic form-factors will be discussed explicitly. We show how the Ward identities are satisfied using the momentum dependent masses and the non-zero vacuum-expectation-values values for the electromagnetic (vector) currents. A short discussion of the needed one-loop twisted finite volume integrals as well as the the ongoing work for the K_{l3} form factors will be included [2]. [1] Masses, Decay Constants and Electromagnetic Form-factors with Twisted Boundary Conditions, Johan Bijnens, Johan Relefors, JHEP 1405 (2014) 015 [2] C. Bernard, J. Bijnens, E. Gamiz, J. Relefors, work in progress

Primary author

Johan Relefors (Lund University)

Co-author

Prof. Johan Bijnens Bijnens (Lund University)

 Slides