Colour correlations and multiplicities in top events
(1994) In Physics Letters B 328(3-4). p.466-476- Abstract
In events of the type e+e- → tt → bW+bW-, particle production could depend in a non-trivial way on the kinematics of the process. Energetic perturbative gluon radiation can be generated (when kinematically allowed) by the original tt system and by the t → bW+ and t → bW- decays, with negligible interference between the production and decay between the t and t decays. Soft perturbative gluon emission and non-perturbative fragmentation does introduce a correlation, however. To illustrate the size of these effects, we study the multiplicity as a function of the angle between the b and b jets, close to the tt threshold. Also potential uncertainties in top mass determinations... (More)
In events of the type e+e- → tt → bW+bW-, particle production could depend in a non-trivial way on the kinematics of the process. Energetic perturbative gluon radiation can be generated (when kinematically allowed) by the original tt system and by the t → bW+ and t → bW- decays, with negligible interference between the production and decay between the t and t decays. Soft perturbative gluon emission and non-perturbative fragmentation does introduce a correlation, however. To illustrate the size of these effects, we study the multiplicity as a function of the angle between the b and b jets, close to the tt threshold. Also potential uncertainties in top mass determinations are briefly addressed.
(Less)
- author
- Khoze, Valery A. and Sjöstrand, Torbjörn LU
- publishing date
- 1994-06-02
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physics Letters B
- volume
- 328
- issue
- 3-4
- pages
- 11 pages
- publisher
- Elsevier
- external identifiers
-
- scopus:0001705737
- ISSN
- 0370-2693
- DOI
- 10.1016/0370-2693(94)91506-7
- language
- English
- LU publication?
- no
- id
- a12e577c-282c-4189-83a7-253dce8381e9
- date added to LUP
- 2019-05-02 21:59:10
- date last changed
- 2021-01-03 11:24:30
@article{a12e577c-282c-4189-83a7-253dce8381e9, abstract = {{<p>In events of the type e<sup>+</sup>e<sup>-</sup> → tt → bW<sup>+</sup>bW<sup>-</sup>, particle production could depend in a non-trivial way on the kinematics of the process. Energetic perturbative gluon radiation can be generated (when kinematically allowed) by the original tt system and by the t → bW<sup>+</sup> and t → bW<sup>-</sup> decays, with negligible interference between the production and decay between the t and t decays. Soft perturbative gluon emission and non-perturbative fragmentation does introduce a correlation, however. To illustrate the size of these effects, we study the multiplicity as a function of the angle between the b and b jets, close to the tt threshold. Also potential uncertainties in top mass determinations are briefly addressed.</p>}}, author = {{Khoze, Valery A. and Sjöstrand, Torbjörn}}, issn = {{0370-2693}}, language = {{eng}}, month = {{06}}, number = {{3-4}}, pages = {{466--476}}, publisher = {{Elsevier}}, series = {{Physics Letters B}}, title = {{Colour correlations and multiplicities in top events}}, url = {{http://dx.doi.org/10.1016/0370-2693(94)91506-7}}, doi = {{10.1016/0370-2693(94)91506-7}}, volume = {{328}}, year = {{1994}}, }