Search for the standard model higgs boson in the ppbar->ZH->nu nubar b bbar channel

GUSTAVO OTERO Y GARZON, THE DZERO COLLABORATION

PHYSICAL REVIEW LETTERS

Año: 2006 p. 1618031 - 1618036

0031-9007

We report a search for the standard model (SM) Higgs boson based on data collected by the D0 experiment at the Fermilab Tevatron Collider, corresponding to an integrated luminosity of 260 pb-1. We study events with missing transverse energy and two acoplanar b jets, which provide sensitivity to the ZH production cross section in the n n b b channel, and to WH production when the lepton from the W à l n decay is undetected. The data are consistent with the SM background expectation, and we set 95% C.L. upper limits on s(ppbar à ZH / WH) x Br(H à bb) from 3.4 / 8.3 to 2.5 / 6.3 pb, for Higgs-boson masses between 105 and 135 GeV.