pion Kaon Scattering in full QCD with domain wall valence quarks
We calculate the {pi}{sup +}K{sup +} scattering length at pion masses of m{sub {pi}} {approx} 290, 350, 490 and 600 MeV in fully-dynamical lattice QCD with domain-wall valence quarks and rooted staggered sea quarks. The lattice data, analyzed at next-to-leading order in chiral perturbation theory, allows an extraction of the full piK scattering amplitude at threshold. Extrapolating to the physical point gives m{sub {pi}} {alpha}{sub 3/2} = -0.0574 {+-} 0.0016{sub -0.0058}{sup +0.0024} and m{sub {pi}} {alpha}{sub 1/2} = 0.1725 {+-} 0.0017{sub -0.0156}{sup +0.0023} for the I = 3/2 and I = 1/2 scattering lengths, respectively, where the first error is statistical and the second error is an estimate of the systematic error due to truncation of the chiral expansion.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE - Office of Energy Research (ER)
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 887103
- Report Number(s):
- JLAB-THY-06-514; DOE/ER/40150-3979; DE-FG03-97ER4014; DF-FC02-94ER40818; TRN: US0604194
- Country of Publication:
- United States
- Language:
- English
Similar Records
Search for T-violating transverse muon polarization in the K{sup +}{yields}{pi}{sup 0}{mu}{sup +}{nu} decay
Continuum limit physics from 2+1 flavor domain wall QCD