Scattering from finite size methods in lattice QCD

Details Scattering from finite size methods in lattice QCD Scattering from finite size methods in lattice QCD

2009-10-26

arxiv.org/abs/0910.4871v1

PoS LAT2009:109,2009

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, 6 figures, a talk presented at The XXVII International Symposium on Lattice Field Theory, July 26-31, 2009, Peking Un

Scientific paper

Using two flavors of maximally twisted mass fermions, we calculate the S-wave pion-pion scattering length in the isospin I=2 channel and the P-wave pion-pion scattering phase in the isospin I=1 channel. In the former channel, the lattice calculations are performed at pion masses ranging from 270 MeV to 485 MeV. We use chiral perturbation theory at next-to-leading order to extrapolate our results. At the physical pion mass, we find m_pi a_pipi(I=2)=-0.04385(28)(38) for the scattering length. In the latter channel, the calculation is currently performed at a single pion mass of 391 MeV. Making use of finite size methods, we evaluate the scattering phase in both the center of mass frame and the moving frame. The effective range formula is employed to fit our results, from which the rho resonance mass and decay width are evaluated.

Affiliated with

Also associated with

No associations

Rating

Scattering from finite size methods in lattice QCD does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Scattering from finite size methods in lattice QCD, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Scattering from finite size methods in lattice QCD will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-562866