Colour Connections in e+e- annihilation
Friberg, Christer LU ; Gustafson, Gösta LU and Häkkinen, Jari LU
(1997)
In Nuclear Physics, Section B
B490.
p.289-305
- Abstract
- We have a very limited knowledge about how the confinement mechanism works in
processes like $\epea\epe\ra\epq\epqa\ggn\ldots\ggn$, when there are identical
colour charges. In this case the partons can be colour connected by a string or
a cluster chain in several different ways. We do not know if in such a situation
Nature chooses a particular configuration at random, or if some configuration is
dynamically favoured. Also in the perturbative parton cascade we have no well
founded recipe for describing the interference effects, which correspond to non
planar diagrams and are caused by identical colour charges. We have studied two
different models, and are in particular... (More) - We have a very limited knowledge about how the confinement mechanism works in
processes like $\epea\epe\ra\epq\epqa\ggn\ldots\ggn$, when there are identical
colour charges. In this case the partons can be colour connected by a string or
a cluster chain in several different ways. We do not know if in such a situation
Nature chooses a particular configuration at random, or if some configuration is
dynamically favoured. Also in the perturbative parton cascade we have no well
founded recipe for describing the interference effects, which correspond to non
planar diagrams and are caused by identical colour charges. We have studied two
different models, and are in particular interested in the possibility that a
colour singlet gluon system hadronizes isolated from the remainder of the state.
Using double tagged events with heavy $\epc\epca$ or $\epb\epba$ quarks, it
appears to be possible to find a significant signal, if such events appear in
Nature.
If this type of (re)connected states appear in Z decays it may also be an
indication that reconnection might appear between the decay products of two W's
in the reaction $\epea\epe\ra\gwp\gwm\ra\epq_1\epqa_2\epQ_1\epQa_2$ at LEP2.
This would be important e.g. for a precision measurement of the W mass. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1543953
- author
- Friberg, Christer
LU
; Gustafson, Gösta
LU
and Häkkinen, Jari
LU
- organization
- publishing date
- 1997
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Nuclear Physics, Section B
- volume
- B490
- pages
- 289 - 305
- publisher
- North-Holland
- external identifiers
-
- scopus:0031567278
- ISSN
- 0550-3213
- DOI
- 10.1016/S0550-3213(97)00064-3
- language
- English
- LU publication?
- yes
- id
- a3eb5ce6-d9d6-4fd0-8729-8231af3fccdb (old id 1543953)
- date added to LUP
- 2016-04-04 09:22:44
- date last changed
- 2024-01-12 12:42:35
@article{a3eb5ce6-d9d6-4fd0-8729-8231af3fccdb,
abstract = {{We have a very limited knowledge about how the confinement mechanism works in<br/><br>
processes like $\epea\epe\ra\epq\epqa\ggn\ldots\ggn$, when there are identical<br/><br>
colour charges. In this case the partons can be colour connected by a string or<br/><br>
a cluster chain in several different ways. We do not know if in such a situation<br/><br>
Nature chooses a particular configuration at random, or if some configuration is<br/><br>
dynamically favoured. Also in the perturbative parton cascade we have no well<br/><br>
founded recipe for describing the interference effects, which correspond to non<br/><br>
planar diagrams and are caused by identical colour charges. We have studied two<br/><br>
different models, and are in particular interested in the possibility that a<br/><br>
colour singlet gluon system hadronizes isolated from the remainder of the state.<br/><br>
Using double tagged events with heavy $\epc\epca$ or $\epb\epba$ quarks, it<br/><br>
appears to be possible to find a significant signal, if such events appear in<br/><br>
Nature.<br/><br>
<br/><br>
If this type of (re)connected states appear in Z decays it may also be an<br/><br>
indication that reconnection might appear between the decay products of two W's<br/><br>
in the reaction $\epea\epe\ra\gwp\gwm\ra\epq_1\epqa_2\epQ_1\epQa_2$ at LEP2.<br/><br>
This would be important e.g. for a precision measurement of the W mass.}},
author = {{Friberg, Christer and Gustafson, Gösta and Häkkinen, Jari}},
issn = {{0550-3213}},
language = {{eng}},
pages = {{289--305}},
publisher = {{North-Holland}},
series = {{Nuclear Physics, Section B}},
title = {{Colour Connections in e+e- annihilation}},
url = {{http://dx.doi.org/10.1016/S0550-3213(97)00064-3}},
doi = {{10.1016/S0550-3213(97)00064-3}},
volume = {{B490}},
year = {{1997}},
}