Resummation of threshold corrections in QCD to power accuracy: The Drell-Yan cross section as a case study
- Stanford Univ., CA (United States). Stanford Linear Accelerator Center
- NORDITA, Copenhagen (Denmark)
Resummation of large infrared logarithms in perturbation theory can, in certain circumstances, enhance the sensitivity to small gluon momenta and introduce spurious nonperturbative contributions. In particular, different procedures--equivalent in perturbation theory--to organize this resummation can differ by 1/Q power corrections. The question arises whether one can formulate resummation procedures that are explicitly consistent with the infrared behavior of finite-order Feynman diagrams. They explain how this problem can be treated and resolved in Drell-Yan (lepton pair) production and briefly discuss more complicated cases, such as top quark production and event shape variables in the e{sup +}e{sup {minus}} annihilation.
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 266728
- Report Number(s):
- SLAC-PUB-7176; NORDITA-96-30-P; CONF-9603183-1; CONF-9604152-1; ON: DE96012410; TRN: 96:017022
- Resource Relation:
- Conference: 2. workshop on continuous advances in QCD, Minneapolis, MN (United States); Rheinsberg (Germany), 28-31 Mar 1996; 21-26 Apr 1996; Other Information: PBD: May 1996
- Country of Publication:
- United States
- Language:
- English
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