Speaker
Tadeusz Janowski
(University of Southampton)
Description
We present the recent lattice QCD calculation of K-π I=3/2 and I=1/2 scattering lengths by the RBC-UKQCD collaboration. Our calculation is the first lattice calculation of these quantities performed using physical point ensembles [1]. This allows us to bypass the error due to chiral extrapolation, which in current calculations is the dominant source of systematic errors [2,3,4,5]. Preliminary results are presented and compared to those from earlier studies which were obtained at heavier pion masses and extrapolated to the physical point.
References
1. T. Blum et al. [RBC and UKQCD Collaborations], “Domain wall QCD with physical quark masses,” arXiv:1411.7017 [hep-lat]
2. S. R. Beane, P. F. Bedaque, T. C. Luu, K. Orginos, E. Pallante, A. Parreno and M. J. Savage, Phys. Rev. D 74 (2006) 114503 [hep-lat/0607036].
3. Z. Fu, JHEP 1201 (2012) 017 [arXiv:1110.5975 [hep-lat]].
4. Z. Fu, Phys. Rev. D 85 (2012) 074501 [arXiv:1110.1422 [hep-lat]].
5. K. Sasaki et al. [PACS-CS Collaboration], Phys. Rev. D 89(2014) 054502 [arXiv:1311.7226[hep-lat]].
Primary author
Tadeusz Janowski
(University of Southampton)
Co-authors
Dr
Andreas Juettner
(Univ. of Southampton)
Prof.
Christopher Sachrajda
(University of Southampton)
Dr
Peter Boyle
(University of Edinburgh)
