Ratio of Jet Cross Sections at √s = 630 GeV and 1800 GeV

Authors

B. Abbott, New York University, New York, New York 10003
Gregory R. Snow, University of Nebraska-LincolnFollow
D0 Collaboration

Date of this Version

3-19-2001

Comments

Published by American Physical Society. Phys. Rev. Lett. VOLUME 86, NUMBER 12 (2001). http://prl.aps.org. Copyright © 2001 American Physical Society. Used by permission.

Abstract

The D0 Collaboration has measured the inclusive jet cross section in p̅p collisions at √s = 630 GeV. The results for pseudorapidities ∣η∣ < 0.5 are combined with our previous results at √s =1800 GeV to form a ratio of cross sections with smaller uncertainties than either individual measurement. Next-to-leading-order QCD predictions show excellent agreement with the measurement at 630 GeV; agreement is also satisfactory for the ratio. Specifically, despite a 10% to 15% difference in the absolute magnitude, the dependence of the ratio on jet transverse momentum is very similar for data and theory.