The Β0-̄Β0 mixing parameter Δmd was measured using Β0→D*-ℓ+ν decays in a 29.1 fb-1 data sample collected with the Belle detector at the KEKB e+e- collider operating at the Υ(4s) resonance. From an unbinned maximum-likelihood fit to the Δt distribution for Β pairs with the same and opposite flavors, it was possible to obtain Δmd=0.494±0.012(stat)±0.015(syst) ps-1.
|Journal||Physical review letters|
|Publication status||Published - 2002 Dec 16|
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)