Probing Balitsky-Fadin-Kuraev-Lipatov Dynamics in the Dijet Cross Section at Large Rapidity Intervals in pp(bar sign) Collisions at {radical}(s) =1800 and 630 GeV

Journal Article · Mon Jun 19 04:00:00 EDT 2000 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.84.5722· OSTI ID:20216889

Abbott, B ^[1]; Abolins, M ^[2]; Abramov, V ^[3]; Acharya, B S ^[4]; Adams, D L ^[5]; Adams, M ^[6]; Akimov, V ^[7]; Alves, G A ^[8]; Amos, N ^[9]; Anderson, E W ^[10]

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1. New York University, New York, New York 10003 (United States)
2. Michigan State University, East Lansing, Michigan 48824 (United States)
3. Institute for High Energy Physics, Protvino, Russia (Russian Federation)
4. Tata Institute of Fundamental Research, Mumbai, (India)
5. University of Texas, Arlington, Texas 76019 (United States)
6. University of Illinois at Chicago, Chicago, Illinois 60607 (United States)
7. Institute for Theoretical and Experimental Physics, Moscow, Russia (Russian Federation)
8. LAFEX, Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, (Brazil)
9. University of Michigan, Ann Arbor, Michigan 48109 (United States)
10. Iowa State University, Ames, Iowa 50011 (United States)

Inclusive dijet production at large pseudorapidity intervals ({delta}{eta} ) between the two jets has been suggested as a regime for observing Balitsky-Fadin-Kuraev-Lipatov (BFKL) dynamics. We have measured the dijet cross section for large {delta}{eta} in pp(bar sign) collisions at {radical}(s)=1800 and 630 GeV using the D0 detector. The partonic cross section increases strongly with the size of {delta}{eta} . The observed growth is even stronger than expected on the basis of BFKL resummation in the leading logarithmic approximation. The growth of the partonic cross section can be accommodated with an effective BFKL intercept of {alpha}{sub BFKL}(20 GeV )=1.65{+-}0.07 . (c) 2000 The American Physical Society.

• OSTI ID: 20216889
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 25 Vol. 84; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CROSS SECTIONS
EXPERIMENTAL DATA
JET MODEL
PARTON MODEL
PROTON-ANTINEUTRON INTERACTIONS
QUANTUM CHROMODYNAMICS