Search for narrow diphoton resonances and for γγ+W/Z signatures in pp¯ collisions at s=1.8 TeV

Le résumé fourni par la source

We present results of searches for diphoton resonances produced both inclusively and also in association with a vector boson $(W$ or $Z)$ using $100 {\mathrm{pb}}^{\ensuremath{-}1}$ of $p\overline{p}$ collisions using the CDF detector. We set upper limits on the product of cross section times branching ratio for both $p\overline{p}\ensuremath{\rightarrow}\ensuremath{\gamma}\ensuremath{\gamma}+X$ and $p\overline{p}\ensuremath{\rightarrow}\ensuremath{\gamma}\ensuremath{\gamma}+W/Z.$ Comparing the inclusive production to the expectations from heavy sgoldstinos we derive limits on the supersymmetry-breaking scale $\sqrt{F}$ in the TeV range, depending on the sgoldstino mass and the choice of other parameters. Also, using a NLO prediction for the associated production of a Higgs boson with a W or Z boson, we set an upper limit on the branching ratio for $\stackrel{\ensuremath{\rightarrow}}{H}\ensuremath{\gamma}\ensuremath{\gamma}.$ Finally, we set a lower limit on the mass of a ``bosophilic'' Higgs boson (e.g., one which couples only to $\ensuremath{\gamma},$ W, and Z bosons with standard model couplings) of $82 \mathrm{GeV}{/c}^{2}$ at 95% confidence level.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.