A measurement of the QCD colour factors and a limit on the light gluino
Using data collected from 1992 to 1995 with the ALEPH detector at LEP, a measurement of the colour factor ratios CA/CF and TF /CF and the strong coupling constant αs = CFαs(MZ)/(2π) has been performed by fitting theoretical predictions simultaneously to the measured differential two-jet rate and ang...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | text |
| Language: | English |
| Published: |
Institutional Knowledge at Singapore Management University
1997
|
| Subjects: | |
| Online Access: | https://ink.library.smu.edu.sg/sis_research/5757 https://ink.library.smu.edu.sg/context/sis_research/article/6760/viewcontent/ppe_97_002.pdf |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Institution: | Singapore Management University |
| Language: | English |
| id |
sg-smu-ink.sis_research-6760 |
|---|---|
| record_format |
dspace |
| spelling |
sg-smu-ink.sis_research-67602021-02-25T10:23:33Z A measurement of the QCD colour factors and a limit on the light gluino BARATE, R.; et al., THULASIDAS, M. Using data collected from 1992 to 1995 with the ALEPH detector at LEP, a measurement of the colour factor ratios CA/CF and TF /CF and the strong coupling constant αs = CFαs(MZ)/(2π) has been performed by fitting theoretical predictions simultaneously to the measured differential two-jet rate and angular distributions in four-jet events. The result is found to be in excellent agreement with QCD, {fx4-1} Fixing CA/CF and TF/CF to the QCD values permits a determination of αs(MZ) and ηf, the number of active flavours. With this measurement the existence of a gluino with mass below 6.3 GeV/c2 is excluded at 95% confidence level. 1997-09-01T07:00:00Z text application/pdf https://ink.library.smu.edu.sg/sis_research/5757 info:doi/10.1007/s002880050522 https://ink.library.smu.edu.sg/context/sis_research/article/6760/viewcontent/ppe_97_002.pdf http://creativecommons.org/licenses/by-nc-nd/4.0/ Research Collection School Of Computing and Information Systems eng Institutional Knowledge at Singapore Management University Computer Engineering Databases and Information Systems |
| institution |
Singapore Management University |
| building |
SMU Libraries |
| continent |
Asia |
| country |
Singapore Singapore |
| content_provider |
SMU Libraries |
| collection |
InK@SMU |
| language |
English |
| topic |
Computer Engineering Databases and Information Systems |
| spellingShingle |
Computer Engineering Databases and Information Systems BARATE, R.; et al., THULASIDAS, M. A measurement of the QCD colour factors and a limit on the light gluino |
| description |
Using data collected from 1992 to 1995 with the ALEPH detector at LEP, a measurement of the colour factor ratios CA/CF and TF /CF and the strong coupling constant αs = CFαs(MZ)/(2π) has been performed by fitting theoretical predictions simultaneously to the measured differential two-jet rate and angular distributions in four-jet events. The result is found to be in excellent agreement with QCD, {fx4-1} Fixing CA/CF and TF/CF to the QCD values permits a determination of αs(MZ) and ηf, the number of active flavours. With this measurement the existence of a gluino with mass below 6.3 GeV/c2 is excluded at 95% confidence level. |
| format |
text |
| author |
BARATE, R.; et al., THULASIDAS, M. |
| author_facet |
BARATE, R.; et al., THULASIDAS, M. |
| author_sort |
BARATE, R.; et al., |
| title |
A measurement of the QCD colour factors and a limit on the light gluino |
| title_short |
A measurement of the QCD colour factors and a limit on the light gluino |
| title_full |
A measurement of the QCD colour factors and a limit on the light gluino |
| title_fullStr |
A measurement of the QCD colour factors and a limit on the light gluino |
| title_full_unstemmed |
A measurement of the QCD colour factors and a limit on the light gluino |
| title_sort |
measurement of the qcd colour factors and a limit on the light gluino |
| publisher |
Institutional Knowledge at Singapore Management University |
| publishDate |
1997 |
| url |
https://ink.library.smu.edu.sg/sis_research/5757 https://ink.library.smu.edu.sg/context/sis_research/article/6760/viewcontent/ppe_97_002.pdf |
| _version_ |
1770575582591975424 |