corner
corner
APS » Journals » Phys. Rev. Lett. » Volume 93 » Issue 3
< Previous Article | Next Article >

Phys. Rev. Lett. 93, 032002 (2004) [4 pages]

Real Radiation at Next-to-Next-to-Leading Order in QCD: e+e-→2 Jets through O(αs2)

Download: PDF (100 kB) Buy this article Export: BibTeX or EndNote (RIS)

Charalampos Anastasiou*
Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309, USA

Kirill Melnikov†
Department of Physics and Astronomy, University of Hawaii, 2505 Correa Road, Honolulu, Hawaii 96822, USA

Frank Petriello‡
Department of Physics, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, USA

Received 11 March 2004; published 15 July 2004

We present a calculation of the differential two-jet cross section in e+e- annihilation through next-to-next-to-leading order (NNLO) in the strong coupling constant αs. The calculation is performed using a new method for dealing with real radiation suggested recently by us. For the first time, the two-jet event rate is computed directly, without any reference to the inclusive cross section e+e-→hadrons. We also calculate the energy distribution of the leading jet in e+e-→2 jets and find significant modifications of the shape of this distribution at NNLO.

© 2004 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.93.032002
DOI:
10.1103/PhysRevLett.93.032002
PACS:
12.38.Bx, 13.66.Bc

*Electronic address: babis@slac.stanford.edu

†Electronic address: kirill@phys.hawaii.edu

‡Electronic address: frankjp@pha.jhu.edu

 
< Previous Article | Next Article >