Published November 1992 | Version v1
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Quark and gluon jets at CDF

Creators

Description

Jet shapes at √s = 1.8 TeV have been measured by CDF at the Fermilab Tevatron Collider. The jet shape is mainly formed by parton emission before hadronization. The jet shapes may also be used to differ between quark and gluon jets. Two approaches are tried. Jet shape variables are input to a feed forward neural network trained on QCD Monte Carlos. We observe a variation of the quark content of jets as a function of jet transverse energy. The second approach consists of constructing a likelihood function, based on Monte Carlo predictions, with the Mellin moments of the momentum of charged tracks in jets. Differences are found between gluon-like jets in 2-jet events and quark-like jets in photon-jet events

Availability note (English)

MF available from INIS under the Report Number; OSTI as DE93014919; NTIS; INIS; US Govt. Printing Office Dep.

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Additional details

Publishing Information

Imprint Pagination
5 p.
Report number
FNAL/C--92/345-E

Conference

Title
Meeting of the Division of Particles and Fields of the American Physical Society.
Dates
10-14 Nov 1992.
Place
Batavia, IL (United States).

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
24073319
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
FERMILAB COLLIDER DETECTOR; FERMILAB TEVATRON; GLUONS; JET MODEL; MONTE CARLO METHOD; NEURAL NETWORKS; PROTON-ANTIPROTON INTERACTIONS; QUARKS; TRANSVERSE ENERGY
Descriptors DEC
ACCELERATORS; BARYON-BARYON INTERACTIONS; BOSONS; CALCULATION METHODS; CYCLIC ACCELERATORS; ELEMENTARY PARTICLES; ENERGY; FERMIONS; HADRON-HADRON INTERACTIONS; INTERACTIONS; KINETIC ENERGY; MATHEMATICAL MODELS; MEASURING INSTRUMENTS; NUCLEON-ANTINUCLEON INTERACTIO; PARTICLE INTERACTIONS; PARTICLE MODELS; POSTULATED PARTICLES; RADIATION DETECTORS; SYNCHROTRONS

Optional Information

Contract/Grant/Project number
Contract AC02-76CH03000
Collaborations
CDF Collaboration.
Funding organization
USDOE, Washington, DC (United States).
Secondary number(s)
CONF-921122--66.