Search for the rare decay B_s^0->mu^+mu^-

G. OTERO Y GARZON, R. PIEGAIA, ET. AL. , THE DZERO COLLABORATION

PHYSICS LETTERS B

ELSEVIER SCIENCE BV

Año: 2010 p. 529 - 544

0370-2693

We present the results of a search for the flavor changing neutral current decay B_s^0->mu^+mu^- using 6.1 fb^-1 of ppbar collisions at sqrt(s) = 1.96 TeV collected by the D0 experiment at the Fermilab Tevatron Collider. The observed number of B_s^0 candidates is consistent with background expectations. The resulting upper limit on the branching fraction is BR(B_s^0->mu^+mu^-) < 5.1 x 10^-8 at the 95% C.L. This limit is a factor of 2.4 better than that of the previous D0 analysis and the best limit to date.