Search for Pair Production of Doubly Charged Higgs Bosons in the H(++)H(−−)→μ(+)μ(+)μ(−)μ(−) Final State

Abstract

We report the results of a search for pair production of doubly charged Higgs bosons via pp-bar→H(++)H(−−)X→μ(+)μ(+)μ(−)μ(−)X at s√=1.96 TeV. We use a data set corresponding to an integrated luminosity of 1.1 fb(−1) collected from 2002 to 2006 by the D0 detector at the Fermilab Tevatron Collider. In the absence of an excess above the standard model background, lower mass limits of M(H(±±)(L))>150 GeV/c(2) and M(H(±±)(R))>127 GeV/c(2) at 95% C.L. are set, respectively, for left-handed and right-handed doubly charged Higgs bosons assuming a 100% branching ratio into muons.