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- Gustafson, GöstaLund University,Lunds universitet,Teoretisk partikelfysik - Geonomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Theoretical Particle Physics - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science (author)
Energy and virtuality scale dependence in quark and gluon jets
- Article/chapterEnglish1998
Publisher, publication year, extent ...
- 1998-09-16
- Springer Science and Business Media LLC,1998
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- LIBRIS-ID:oai:lup.lub.lu.se:efc2f472-cda9-4d8c-af92-3773e7a34940
- https://lup.lub.lu.se/record/efc2f472-cda9-4d8c-af92-3773e7a34940URI
- https://doi.org/10.1088/1126-6708/1998/09/015DOI
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- Language:English
- Summary in:English
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- We discuss some important issues concerning multiplicities in quark and gluon jets in e+e- annihilation. In QCD the properties of a jet in general depend on two scales, the energy and virtuality of the jet. Frequently theoretical predictions apply to a situation where these scales coincide, while for experimental data they are often different. Thus an analysis to extract e.g. the asymptotic multiplicity ratio CF/CA between quark and gluon jets, needs a carefully specified jet definition, together with a calculation of nonleading corrections to the multiplicity evolution. We propose methods to systematically study the separate dependence upon the two scales in experimental data and compare the results with theory. We present jet finding algorithms which corresponds well to the theoretically considered jets. We also show that recoil effects add corrections to the modified leading log approximation which are quantitatively important, though formally suppressed at high energies.
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- Edén, PatrikLund University,Lunds universitet,Beräkningsbiologi och biologisk fysik - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Computational Biology and Biological Physics - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science(Swepub:lu)thep-ped (author)
- Teoretisk partikelfysik - Geonomgår omorganisationInstitutionen för astronomi och teoretisk fysik - Genomgår omorganisation (creator_code:org_t)
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- In:Journal of High Energy Physics: Springer Science and Business Media LLC1998:JHEP09(1998)1029-8479
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