NLO QCD corrections to five-jet production at LEP and the extraction of α s(M Z)
(2010) In Journal of High Energy Physics 2010(11).- Abstract
The highest exclusive jet multiplicity studied at LEP experiments is five. In this paper we compute the next-to-leading order QCD corrections to e +e - annihilation to five jets, essentially closing the (pure) perturbative QCD studies of exclusive jetty final states at LEP. We compare fixed-order perturbative results with ALEPH data. We estimate hadronization corrections to five-jet observables using the event generator SHERPA, which employs the CKKW procedure to combine a reliable perturbative treatment of highmultiplicity jet final states with parton showers. We show that a competitive value of the strong coupling constant α s(M Z) = 0.1156 -0.0034 +0.0041 can be... (More)
The highest exclusive jet multiplicity studied at LEP experiments is five. In this paper we compute the next-to-leading order QCD corrections to e +e - annihilation to five jets, essentially closing the (pure) perturbative QCD studies of exclusive jetty final states at LEP. We compare fixed-order perturbative results with ALEPH data. We estimate hadronization corrections to five-jet observables using the event generator SHERPA, which employs the CKKW procedure to combine a reliable perturbative treatment of highmultiplicity jet final states with parton showers. We show that a competitive value of the strong coupling constant α s(M Z) = 0.1156 -0.0034 +0.0041 can be extracted from the distribution of the five-jet resolution parameter and the five-jet rate at LEP1 and LEP2.
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- author
- Frederix, Rikkert LU ; Frixione, Stefano ; Melnikov, Kirill and Zanderighi, Giulia
- publishing date
- 2010-11
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Jets, LEP HERA and SLC Physics, NLO Computations, QCD
- in
- Journal of High Energy Physics
- volume
- 2010
- issue
- 11
- article number
- 050
- pages
- 25 pages
- publisher
- Springer
- external identifiers
-
- scopus:84856366986
- ISSN
- 1029-8479
- DOI
- 10.1007/JHEP11(2010)050
- language
- English
- LU publication?
- no
- id
- c7c58e89-034c-43a4-a70f-f8bddba2ec8b
- date added to LUP
- 2019-05-28 15:12:20
- date last changed
- 2022-01-31 21:04:35
@article{c7c58e89-034c-43a4-a70f-f8bddba2ec8b, abstract = {{<p>The highest exclusive jet multiplicity studied at LEP experiments is five. In this paper we compute the next-to-leading order QCD corrections to e <sup>+</sup>e <sup>-</sup> annihilation to five jets, essentially closing the (pure) perturbative QCD studies of exclusive jetty final states at LEP. We compare fixed-order perturbative results with ALEPH data. We estimate hadronization corrections to five-jet observables using the event generator SHERPA, which employs the CKKW procedure to combine a reliable perturbative treatment of highmultiplicity jet final states with parton showers. We show that a competitive value of the strong coupling constant α <sub>s</sub>(M <sub>Z</sub>) = 0.1156 <sub>-0.0034</sub> <sup>+0.0041</sup> can be extracted from the distribution of the five-jet resolution parameter and the five-jet rate at LEP1 and LEP2.</p>}}, author = {{Frederix, Rikkert and Frixione, Stefano and Melnikov, Kirill and Zanderighi, Giulia}}, issn = {{1029-8479}}, keywords = {{Jets; LEP HERA and SLC Physics; NLO Computations; QCD}}, language = {{eng}}, number = {{11}}, publisher = {{Springer}}, series = {{Journal of High Energy Physics}}, title = {{NLO QCD corrections to five-jet production at LEP and the extraction of α <sub>s</sub>(M <sub>Z</sub>)}}, url = {{http://dx.doi.org/10.1007/JHEP11(2010)050}}, doi = {{10.1007/JHEP11(2010)050}}, volume = {{2010}}, year = {{2010}}, }