ep - l at / 0 10 50 27 v 1 2 5 M ay 2 00 1 The Charge and Matter radial distributions of Heavy - Light mesons calculated on a lattice

For a heavy-light meson with a static heavy quark, we can explore the light quark distribution. The charge and matter radial distributions of these heavylight mesons are measured on a 16 × 24 lattice at β = 5.7 and a hopping parameter corresponding to a light quark mass about that of the strange quark. Both distributions can be well fitted up to 4 lattice spacings (r ≈ 0.7 fm) with the exponential form w i (r), where wi(r) = A exp(−r/ri). For the charge(c) and matter(m) distributions rc ≈ 0.32(2)fm and rm ≈ 0.24(2)fm. We also discuss the normalisation of the total charge and matter integrated over all space, finding 1.30(5) and 0.4(1) respectively. PACS numbers: 14.40.Nd, 13.20.He, 11.15.Ha, 12.38.Gc Typeset using REVTEX e-mails:[email protected], [email protected], [email protected] e-mail: [email protected]