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Titolo:
New shapes of light-cone distributions of the transversely polarized rho-mesons
Autore:
Bakulev, AP; Mikhailov, SV;
Indirizzi:
Joint Nucl Res Inst, Bogolyubov Lab Theoret Phys, Dubna 141980, Moscow Region, Russia Joint Nucl Res Inst Dubna Moscow Region Russia 141980 scow Region, Russia
Titolo Testata:
EUROPEAN PHYSICAL JOURNAL C
fascicolo: 2, volume: 19, anno: 2001,
pagine: 361 - 372
SICI:
1434-6044(200102)19:2<361:NSOLDO>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
QCD SUM-RULES; PION WAVE-FUNCTION; FORM-FACTOR GAMMA-GAMMA-ASTERISK->PI(0); VACUUM TENSOR SUSCEPTIBILITY; QUARK-GLUON CONDENSATE; DISTRIBUTION AMPLITUDES; B-MESON; FACTORIZATION; PHYSICS; DECAYS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
40
Recensione:
Indirizzi per estratti:
Indirizzo: Bakulev, AP Joint Nucl Res Inst, Bogolyubov Lab Theoret Phys, Dubna 141980, Moscow Region, Russia Joint Nucl Res Inst Dubna Moscow Region Russia 141980 Russia
Citazione:
A.P. Bakulev e S.V. Mikhailov, "New shapes of light-cone distributions of the transversely polarized rho-mesons", EUR PHY J C, 19(2), 2001, pp. 361-372

Abstract

The leading twist light-cone distributions for transversely polarized rho-, rho '- and b(1)-mesons are reanalyzed in the framework of QCD sum rules with nonlocal condensates. Using different kinds of sum rules to obtain reliable predictions, we estimate the 2nd. 4th, 6th and 8th moments for transversely polarized rho- and rho ' -meson distributions and re-estimate the tensor couplings f(rho.rho ' .b1)(T). We stress that the results of the standard sum rules also support our estimate of the second moment of the transversely polarized p-meson distribution. New models for light-cone distributions of these mesons are constructed. Phenomenological consequences of these distributions are briefly discussed. Our results are compared with those found by Ball and Braun in 1996, and the latter are shown to be incomplete.

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Documento generato il 28/03/20 alle ore 14:19:27