The BIPM G experiment — Final results

This paper gives the final results of the Mk II version of the BIPM torsion-balance G experiment. Results of the Mk I version were published in 2001 and the apparatus was entirely rebuilt in the years 2001 to 2003. The key feature the BIPM approach is that a value of G can be obtained by up to three different methods. The 2001 result came from two methods, which agreed with each other closely. The present work is producing results from three different methods and the considerable challenge to be described in this paper is to obtain agreement among the three.