Measurement of the gluon fragmentation function and a comparison of the scaling violation in gluon and quark jets | Zendy

P. Abreu et al. | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Measurement of the gluon fragmentation function and a comparison of the scaling violation in gluon and quark jets

Author(s) -

P. Abreu et al.

Publication year - 2000

Publication title -

the european physical journal c

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.938

H-Index - 198

eISSN - 1434-6052

pISSN - 1434-6044

DOI - 10.1007/s100520050719

Subject(s) - gluon , physics , particle physics , dglap , quark , fragmentation function , scaling , nuclear physics , quark–gluon plasma , annihilation , quantum chromodynamics , charm quark , parton , geometry , mathematics

The fragmentation functions of quarks and gluons are measured in various three-jet topologies in Z decays from the full data set collected with the DELPHI detector at the Z resonance between 1992 and 995. The results at different values of transverse momentum-like scales are compared. A parameterization of the quark and gluon fragmentation functions at a fixed reference scale is given. The quark and gluon fragmentation functions show the predicted pattern of scaling violations. The scaling violation for quark jets as a function of a transverse momentum-like scale is in a good agreement with that observed in lower energy e+e- annihilation experiments. For gluon jets it appears to be significantly stronger. The scale dependences of the gluon and quark fragmentation functions agree with the prediction of the DGLAP evolution equations from which the colour factor ratio CA/CF is measured to be: CA/CF = 2.26 ± 0.09stat. ± 0.06sys. ± 0.12clus.,scale..

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research