e +e − Jets: Cones or tubes?
The predictions of quantum chromodynamics (QCD) for narrow angular jets in e +e − annihilation are compared with the expectations coming from the hadron phenomenology (fixed- ϱ T jets). It is shown that the hadronization effects are responsible for surprisingly strong signals in the calorimeter meas...
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| Published in | Nuclear physics. B Vol. 158; no. 2; pp. 429 - 451 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
Elsevier B.V
01.01.1979
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| Online Access | Get full text |
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| Summary: | The predictions of quantum chromodynamics (QCD) for narrow angular jets in e
+e
− annihilation are compared with the expectations coming from the hadron phenomenology (fixed-
ϱ
T jets).
It is shown that the hadronization effects are responsible for surprisingly strong signals in the calorimeter measurements at present energies and, when superimposed on QCD jets, modify drastically the naïve perturbative predictions. The transition energy above which the QCD effects start to dominate over the non-perturbative background is found to lie in the LEP energy region.
A new method of analyzing the calorimeter data is proposed, also providing the quantities which are expected to be insensitive to the hadronic effects at present energies. |
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| ISSN: | 0550-3213 1873-1562 |
| DOI: | 10.1016/0550-3213(79)90176-7 |