Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
SPECTRUM OF SCALAR-SCALAR BOUND-STATES
Autore:
MODRITSCH W;
Indirizzi:
VIENNA TECH UNIV,INST THEORET PHYS,WIEDNER HAUPTSTR 8-10 A-1040 VIENNA AUSTRIA
Titolo Testata:
Physical review. D. Particles and fields
fascicolo: 9, volume: 56, anno: 1997,
pagine: 5386 - 5394
SICI:
0556-2821(1997)56:9<5386:SOSB>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
BETHE-SALPETER-EQUATION; HEAVY TOP QUARKS; T(T)OVER-BAR PRODUCTION; MOMENTUM DISTRIBUTIONS; NEAR-THRESHOLD; POSITRONIUM; WIDTH; DECAY; QCD; PAIR;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
33
Recensione:
Indirizzi per estratti:
Citazione:
W. Modritsch, "SPECTRUM OF SCALAR-SCALAR BOUND-STATES", Physical review. D. Particles and fields, 56(9), 1997, pp. 5386-5394

Abstract

An exactly solvable, Barbieri-Remiddi-like equation for bound states of two scalar constituents interacting with massless vector particles is presented for both stable and unstable particles. With the help of this equation the bound state spectrum is calculated to O(alpha(4)) for a SU(N) non-Abelian gauge theory. The result for the Abelian case reproduces the known result from previous calculations. It is shown how different graphs as in the fermionic theory contribute to the spectrumto this order. Furthermore the bound state correction to the decay width for a weakly decaying system is calculated. This result is equal to its fermionic counterpart. Thus the theorem on bound state corrections for weakly decaying: particles, formulated previously for fermions only, has been extended to the scalar theory.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/12/20 alle ore 10:45:13