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Titolo:
Final-state interactions and s-quark helicity conservation in B -> J vertical bar psi K* - art. no. 117503
Autore:
Suzuki, M;
Indirizzi:
Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA Univ Calif Berkeley Berkeley CA USA 94720 pt Phys, Berkeley, CA 94720 USA Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA Univ Calif Berkeley Berkeley CA USA 94720 ley Lab, Berkeley, CA 94720 USA
Titolo Testata:
PHYSICAL REVIEW D
fascicolo: 11, volume: 6411, anno: 2001,
pagine: 7503 -
SICI:
0556-2821(200112)6411:11<7503:FIASHC>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
HEAVY MESON DECAYS; SEMILEPTONIC DECAYS; QCD FACTORIZATION; FORM-FACTORS; B-DECAYS; AMPLITUDES; CHARMONIUM; PHASES; MODEL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: Suzuki, M Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA Univ Calif Berkeley Berkeley CA USA 94720 erkeley, CA 94720 USA
Citazione:
M. Suzuki, "Final-state interactions and s-quark helicity conservation in B -> J vertical bar psi K* - art. no. 117503", PHYS REV D, 6411(11), 2001, pp. 7503

Abstract

The latest BaBar Collaboration measurement has confirmed substantial strong phases for the B-J/psiK* decal amplitudes, implying violation of factorization in this decay mode. In the absence of a polarization measurement or alepton pair from J/psi, however the relative phases of the spin amplitudesstill have a twofold ambiguity. In one set of the allowed phases the s-quark helicity is conserved approximately despite final-state interactions. Inthe other set, the s-quark helicity is badly violated hy long-distance interactions. We cannot rule out the latter mince the validity of pertubative QCD is questionable for this decay. We examine the large final-state interactions vith a statistical model. Toward a resolution of the ambiguity without a lepton polarization measurement, we discuss the relevance of other B-l(-) l(-) decay modes that involve the same feature.

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Documento generato il 09/04/20 alle ore 00:26:44