Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2006-03-17
Phys.Rev.D73:112008,2006
Physics
High Energy Physics
High Energy Physics - Experiment
7 pages, 4 figures
Scientific paper
10.1103/PhysRevD.73.112008
Arkani-Hamed, Dimopoulous, and Dvali have proposed a model of low-scale quantum gravity featuring large extra dimensions. In this model, the exchange of Kaluza-Klein towers of gravitons can enhance the production rate of electron and photon pairs at high invariant mass in proton-antiproton collisions. The amount of enhancement is characterized by the parameter $M_S$, the fundamental Planck scale in the bulk extra dimensions. We have searched for this effect using 100 pb$^{-1}$ of diphoton data and 110 pb$^{-1}$ of dielectron data collected with the Collider Detector at Fermilab at $\sqrt{s}=1.8$ TeV during the 1992-1996 run. In the absence of a signal, we place 95% confidence-level limits on $M_S$ of 905 GeV/$c^2$ and 826 GeV/$c^2$, for the case of constructive and destructive graviton interference respectively.
Berebitsky Daniel
Blair Robert E.
Carlson John
Gerdes David
Houston Joey
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