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

Kaon mixing beyond the standard model with physical masses.

Jul 27, 2018, 3:20 PM
20m
103 (Kellogg Hotel and Conference Center)

103

Kellogg Hotel and Conference Center

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

Speaker

Ms Julia Kettle (University of Edinburgh)

Description

I present an update on the calculation of beyond the standard model kaon mixing matrix elements in isospin symmetric pure QCD with $n_f$ = 2 + 1 dynamical flavours calculated with data at the physical pion mass. Our analysis includes simulations with domain wall fermions and an Iwasaki gauge, at three-lattice spacings and a range of pion masses from the physical point up to 430 MeV. We perform a simultaneous chiral and continuum fit to extrapolate to the physical point continuum limit. This builds upon our earlier work, by adding the third lattice spacing and ensembles calculated directly at the physical light quark mass, improving the precision of the mass extrapolation and removal of discretisation effects.

Primary author

Ms Julia Kettle (University of Edinburgh)

Co-authors

Dr Ava Khamseh (University of Edinburgh) Dr Justus Tobias Tsang (University of Edinburgh) Dr Nicolas Garron (University of Liverpool) Prof. Peter Boyle (University of Edinburgh) Dr Renwick James Hudspith (York University)

Presentation Materials