Deuteron and proton production in Pb+Pb collisions at 40,80 and 158 AGeV

In the NA49 experiment at the CERN SPS the transverse mass $m_{t}$ distributions for deuterons and protons are measured in Pb+Pb reactions near midrapidity and in a wide range of the collision centrality at 158 AGeV (<N/sub part/>=85-366), and for the 7% most central collisions at 40 and 80 AGeV (<N/sub part/>=349). The rapidity density dn/dy and inverse slope parameter T derived from these distributions as well as the coalescence parameter B/sub 2/ (ratio d/p/sup 2/) are studied as a function of the incident energy and the collision centrality. (17 refs).