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Titolo:
Determination of heavy-meson wave functions from B decays
Autore:
Li, HN; Melic, B;
Indirizzi:
Natl Cheng Kung Univ, Dept Phys, Tainan 701, Taiwan Natl Cheng Kung Univ Tainan Taiwan 701 iv, Dept Phys, Tainan 701, Taiwan Rudjer Boskovic Inst, Div Theoret Phys, Zagreb 10001, Croatia Rudjer Boskovic Inst Zagreb Croatia 10001 et Phys, Zagreb 10001, Croatia
Titolo Testata:
EUROPEAN PHYSICAL JOURNAL C
fascicolo: 4, volume: 11, anno: 1999,
pagine: 695 - 702
SICI:
1434-6044(199912)11:4<695:DOHWFF>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
PERTURBATIVE QCD; FORM-FACTOR; BRANCHING FRACTIONS; EXCLUSIVE PROCESSES; SCATTERING; TRANSITION; BEHAVIOR;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
32
Recensione:
Indirizzi per estratti:
Indirizzo: Li, HN Natl Cheng Kung Univ, Dept Phys, Tainan 701, Taiwan Natl Cheng KungUniv Tainan Taiwan 701 t Phys, Tainan 701, Taiwan
Citazione:
H.N. Li e B. Melic, "Determination of heavy-meson wave functions from B decays", EUR PHY J C, 11(4), 1999, pp. 695-702

Abstract

We extract the B, D, and D* meson wave functions from the CLEO data of thedecays B --> K*gamma and B --> D-(*())pi in the perturbative QCD framework. In this formalism, various logarithmic corrections are organized to give the Wilson evolution from the W boson mass down to the characteristic scaleof a dccay process, which is of order of the b quark mass, and the Sudakovevolution from the characteristic scale to a lower factorization scale of order Lambda(QCD) With large logarithms organized, the b quark decay amplitudes are evaluated reliably in perturbation theory. Below the factorizationscale, QCD dynamics is regarded as being nonperturbative, and absorbed into meson wave functions. Because of their universality, the heavy-meson wavefunctions determined in this work, can be employed to make predictions of other decay modes. Mie also observe that the dependence of heavy meson wavefunctions on intrinsic parton transverse momenta plays an important role in the explanation of data.

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Documento generato il 07/04/20 alle ore 03:24:46