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Titolo:
Power scaling rules for charmonia production and HQEFT
Autore:
Sanchis-Lozano, MA;
Indirizzi:
Univ Valencia, Ctr Mixto, CSIC, Dept Fis Teor, Burjassot 46100, Valencia, Spain Univ Valencia Burjassot Valencia Spain 46100 assot 46100, Valencia, Spain Univ Valencia, Ctr Mixto, CSIC, IFIC, Burjassot 46100, Valencia, Spain Univ Valencia Burjassot Valencia Spain 46100 assot 46100, Valencia, Spain
Titolo Testata:
INTERNATIONAL JOURNAL OF MODERN PHYSICS A
fascicolo: 25, volume: 16, anno: 2001,
pagine: 4189 - 4206
SICI:
0217-751X(20011010)16:25<4189:PSRFCP>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
EFFECTIVE-FIELD-THEORY; HEAVY QUARKONIUM; MATRIX-ELEMENTS; FERMILAB-TEVATRON; DECAYS; QCD; HADRONS;
Keywords:
HQET; NRQCD; quarkonia production; color-octet model; charmonium;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
41
Recensione:
Indirizzi per estratti:
Indirizzo: Sanchis-Lozano, MA Univ Valencia, Ctr Mixto, CSIC, Dept Fis Teor, Burjassot 46100, Valencia, Spain Univ Valencia Burjassot Valencia Spain 46100 ia, Spain
Citazione:
M.A. Sanchis-Lozano, "Power scaling rules for charmonia production and HQEFT", INT J MOD P, 16(25), 2001, pp. 4189-4206

Abstract

We discuss the power scaling rules along the lines of a complete heavy quark effective field theory (HQEFT) for the description of heavy quarkonium production through a color-octet mechanism. To this end, we firstly derive atree-level heavy quark effective Lagrangian keeping both particle-antiparticle mixed sectors allowing for heavy quark-antiquark pair annihilation andcreation, but describing only low-energy modes around the heavy quark mass. Then we show the consistency of using HQEFT fields in constructing four-fermion local operators a la NRQCD, to be identified with standard color-octet matrix elements. We analyze some numerical values extracted from charmonia production by different authors and their hierarchy in the light of HQEFT.

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Documento generato il 12/07/20 alle ore 09:05:58