Diffractive Dijet Production at sqrt(s)=630 and 1800 GeV at the Fermilab Tevatron

Details Diffractive Dijet Production at sqrt(s)=630 and 1800 GeV at the Fermilab Tevatron Diffractive Dijet Production at sqrt(s)=630 and 1800 GeV at the Fermilab Tevatron

2001-09-17

arxiv.org/abs/hep-ex/0109025v1

Phys.Rev.Lett.88:151802,2002

Physics

High Energy Physics

High Energy Physics - Experiment

LaTeX, 9 pages, Submitted to Phys. Rev. Letters

Scientific paper

10.1103/PhysRevLett.88.151802

We report a measurement of the diffractive structure function $F_{jj}^D$ of the antiproton obtained from a study of dijet events produced in association with a leading antiproton in $\bar pp$ collisions at $\sqrt s=630$ GeV at the Fermilab Tevatron. The ratio of $F_{jj}^D$ at $\sqrt s=630$ GeV to $F_{jj}^D$ obtained from a similar measurement at $\sqrt s=1800$ GeV is compared with expectations from QCD factorization and with theoretical predictions. We also report a measurement of the $\xi$ ($x$-Pomeron) and $\beta$ ($x$ of parton in Pomeron) dependence of $F_{jj}^D$ at $\sqrt s=1800$ GeV. In the region $0.035<\xi<0.095$, $|t|<1$ GeV$^2$ and $\beta<0.5$, $F_{jj}^D(\beta,\xi)$ is found to be of the form $\beta^{-1.0\pm 0.1} \xi^{-0.9\pm 0.1}$, which obeys $\beta$-$\xi$ factorization.

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