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:
- Stanford Linear Accelerator Center, 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
- Country of Publication:
- United States
- Language:
- English
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