Search for narrow resonances lighter than $Υ$ mesons

Details Search for narrow resonances lighter than $Υ$ mesons Search for narrow resonances lighter than $Υ$ mesons

2009-03-11

arxiv.org/abs/0903.2060v1

Eur.Phys.J.C62:319-326,2009

Physics

High Energy Physics

High Energy Physics - Experiment

9 pages, 3 figures

Scientific paper

10.1140/epjc/s10052-009-1057-4

We report a search for narrow resonances, produced in $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV, that decay into muon pairs with invariant mass between 6.3 and 9.0 GeV/c^2. The data, collected with the CDF~II detector at the Fermilab Tevatron collider, correspond to an integrated luminosity of 630 pb$^{-1}$. We use the dimuon invariant mass distribution to set 90% upper credible limits of about 1% to the ratio of the production cross section times muonic branching fraction of possible narrow resonances to that of the $\Upsilon(1{\rm S})$ meson.

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