Evolution effects in Z0 fragmentation into charmonium
Ernström, P. ; Lonnblad, L. LU
and Vänttinen, M.
(1997)
In Zeitschrift für Physik C Particles and Fields
76(3).
p.515-521
- Abstract
- In Z0 decay into prompt charmonium, i.e. charmonium not originating from B-meson decays, the most important contribution is expected to come from colour-octet mechanisms. However, previous fixed-order calculations of the colour-octet contribution contain large logarithms which, in a more complete treatment, should be resummed to all orders. We study this resummation by using a Monte Carlo QCD cascade model and find that the fixed-order colouroctet result is diminished by 15%. We compare the Monte Carlo calculations with results obtained by using analytical evolution equations.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/0a9f9019-9ad2-456c-b017-f416feaf3ce9
- author
- Ernström, P.
; Lonnblad, L.
LU
and Vänttinen, M.
- publishing date
- 1997
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Zeitschrift für Physik C Particles and Fields
- volume
- 76
- issue
- 3
- pages
- 7 pages
- publisher
- Springer
- external identifiers
-
- scopus:0009408976
- ISSN
- 0170-9739
- DOI
- 10.1007/s002880050574
- language
- English
- LU publication?
- no
- id
- 0a9f9019-9ad2-456c-b017-f416feaf3ce9
- alternative location
- https://arxiv.org/pdf/hep-ph/9612408
- date added to LUP
- 2019-05-16 15:18:40
- date last changed
- 2022-01-31 20:11:34
@article{0a9f9019-9ad2-456c-b017-f416feaf3ce9,
abstract = {{In Z0 decay into prompt charmonium, i.e. charmonium not originating from B-meson decays, the most important contribution is expected to come from colour-octet mechanisms. However, previous fixed-order calculations of the colour-octet contribution contain large logarithms which, in a more complete treatment, should be resummed to all orders. We study this resummation by using a Monte Carlo QCD cascade model and find that the fixed-order colouroctet result is diminished by 15%. We compare the Monte Carlo calculations with results obtained by using analytical evolution equations.}},
author = {{Ernström, P. and Lonnblad, L. and Vänttinen, M.}},
issn = {{0170-9739}},
language = {{eng}},
number = {{3}},
pages = {{515--521}},
publisher = {{Springer}},
series = {{Zeitschrift für Physik C Particles and Fields}},
title = {{Evolution effects in Z0 fragmentation into charmonium}},
url = {{http://dx.doi.org/10.1007/s002880050574}},
doi = {{10.1007/s002880050574}},
volume = {{76}},
year = {{1997}},
}