Published 1984 | Version v1
Miscellaneous Open

A counter example of the Bloch Nordsiek theorem for the quark-gluon scattering

Description

Quark-massless quark and quark gluon scattering are studied in the Infrared region. In both cases is shown that the infrared divergences do not cancel. This breaks the factorization theorems. It is raised the question about how to use the impulse approximation for reactions that contain IR singularities. (Author)

Availability note (English)

MF available from INIS under the Report Number.

Abstract (Portuguese)

Estudam-se os espalhamentos quark (sem massa)-quark e quark-gluon na regiao infravermelha. Mostra-se nos dois casos que as divergencias infravermelhas nao cancelam. Isso quebra os teoremas de fatorizacao. Levanta-se a questao de como usar a aproximacao de impulso para reacoes que contem singularidades infravermelhas. (L.C.)

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Additional details

Publishing Information

Imprint Pagination
37 p.
Report number
INIS-BR--151

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
16008829
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
IMPULSE APPROXIMATION; INFRARED DIVERGENCES; QUARK-GLUON INTERACTIONS; QUARK-QUARK INTERACTIONS; SCATTERING
Descriptors DEC
INTERACTIONS; PARTICLE INTERACTIONS