Speaker
dzmitry budkouski
(JINR)
Description
A method which can distinguish quark and gluon jets in mixed sample was described in report. The tagger is a likelihood discriminant constructed out of three variables: particle multiplicity, minor axis of the jets profile ellipse and fragmentation function. This quark-gluon likelihood (QGL) discriminator is used in analyses carried out in the CMS experiment. Using QGL discriminator, a method for measuring the fraction of gluon jets in mixed sample was developed. Mathematical aspects of QGL discriminator and method to measure gluon fraction are described.
Primary author
dzmitry budkouski
(JINR)
