Threshold resummation for dihadron production in hadronic collisions

Journal Article · Thu Oct 01 04:00:00 EDT 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.80.074016· OSTI ID:21325231

Almeida, Leandro G; Sterman, George ^[1]; Vogelsang, Werner ^[2]

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1. C. N. Yang Institute for Theoretical Physics, Stony Brook University, Stony Brook, New York 11794-3840 (United States)
2. Physics Department, Brookhaven National Laboratory, Upton, New York 11973 (United States)

We study the resummation of large logarithmic perturbative corrections to the partonic cross sections relevant for dihadron production in hadronic collisions, H{sub 1}H{sub 2}{yields}h{sub 1}h{sub 2}X, at high invariant mass of the produced hadron pair. These corrections arise near the threshold for the partonic reaction and are associated with soft-gluon emission. We perform the resummation to next-to-leading logarithmic accuracy, and show how to incorporate consistently cuts in rapidity and transverse momentum of the observed particles. We present numerical results for fixed-target and ISR regimes and find enhancements over the next-to-leading order cross section, which significantly improve the agreement between theoretical predictions and data.

• OSTI ID: 21325231
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 7 Vol. 80; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCURACY
COLLISIONS
CORRECTIONS
CROSS SECTIONS
EMISSION
FORECASTING
GLUONS
HADRONS
MASS
PARTICLE RAPIDITY
PERTURBATION THEORY
TRANSVERSE MOMENTUM