Test of the flavour independence of 
                $\alpha_s$
               using next-to-leading order calculations for heavy quarks

Abbiendi, G.

doi:10.1007/s100529900225

Eur. Phys. J. C

1999

DOI: 10.1007/s100529900225

|View full text |Cite

Test of the flavour independence of $\alpha_s$ using next-to-leading order calculations for heavy quarks

G. Abbiendi

Abstract: Abstract. We present a test of the flavour independence of the strong coupling constant for charm and bottom quarks with respect to light (uds) quarks, based on a hadronic event sample obtained with the OPAL detector at LEP. Five observables related to global event shapes were used to measure αs in three flavour tagged samples (uds, c and b). The event shape distributions were fitted by O(α 2 s ) calculations of jet production taking into account mass effects for the c and b quarks. We find:

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2000

2019

Publication Types

Select...

Article5

Relationship

Self Cite0

Independent5

Authors

Journals

Cited by 8 publications

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

High precision determination of αs from a global fit of jet rates

Verbytskyi

Banfi

Kardos

et al. 2019

J. High Energ. Phys.

View full text Add to dashboard Cite

We present state-of-the-art extractions of the strong coupling based on N 3 LO+NNLL accurate predictions for the two-jet rate in the Durham clustering algorithm at e + e − collisions, as well as a simultaneous fit of the two-and three-jet rates taking into account correlations between the two observables. The fits are performed on a large range of data sets collected at LEP and PETRA colliders, with energies spanning from 35 GeV to 207 GeV. Owing to the high accuracy of the predictions used, the perturbative uncertainty is considerably smaller than that due to hadronization. Our best determination at the Z mass is α s (M Z ) = 0.11881 ± 0.00063(exp.) ± 0.00101(hadr.) ± 0.00045(ren.) ± 0.00034(res.), which is in agreement with the latest world average and has a comparable total uncertainty.

show abstract

High precision determination of αs from a global fit of jet rates

Verbytskyi

Banfi

Kardos

et al. 2019

J. High Energ. Phys.

View full text Add to dashboard Cite

show abstract

A measurement of the b-quark mass from hadronic Z decays

Barate¹,

Décamp²,

Ghez³

et al. 2000

Eur. Phys. J. C

View full text Add to dashboard Cite

Hadronic Z decay data taken with the ALEPH detector at LEP1 are used to measure the three-jet rate as well as moments of various event-shape variables. The ratios of the observables obtained from b-tagged events and from an inclusive sample are determined. The mass of the b quark is extracted from a fit to the measured ratios using a next-to-leading order prediction including mass effects. Taking the first moment of the y 3 distribution, which is the observable with the smallest hadronization corrections and systematic uncertainties, the result isThe measured ratio is alternatively employed to test the flavour independence of the strong coupling constant for b and light quarks.

show abstract

Experimental tests of the strong interaction and its energy dependence in electron–positron annihilation

Biebel

2001

Physics Reports

View full text Add to dashboard Cite

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

hi@scite.ai

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Test of the flavour independence of $\alpha_s$ using next-to-leading order calculations for heavy quarks

Cited by 8 publications

References 17 publications

High precision determination of αs from a global fit of jet rates

High precision determination of αs from a global fit of jet rates

A measurement of the b-quark mass from hadronic Z decays

Experimental tests of the strong interaction and its energy dependence in electron–positron annihilation

Contact Info

Product

Resources

About