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Titolo:
Recoil phase effect in exclusive B decays: Implications for CP violation
Autore:
Ward, BFL;
Indirizzi:
Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA Univ Tennessee Knoxville TN USA 37996 s & Astron, Knoxville, TN 37996 USA Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA Stanford Univ Stanford CA USA 94309 celerator Ctr, Stanford, CA 94309 USA CERN, Div Theory, CH-1211 Geneva, Switzerland CERN Geneva Switzerland CH-1211 Div Theory, CH-1211 Geneva, Switzerland
Titolo Testata:
ACTA PHYSICA POLONICA B
fascicolo: 6, volume: 32, anno: 2001,
pagine: 1835 - 1846
SICI:
0587-4254(200106)32:6<1835:RPEIEB>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
NONLEPTONIC DECAYS; PENGUIN DIAGRAMS; FACTORIZATION; MESONS; ASYMMETRIES; ELECTROWEAK;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
28
Recensione:
Indirizzi per estratti:
Indirizzo: Ward, BFL Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA UnivTennessee Knoxville TN USA 37996 , Knoxville, TN 37996 USA
Citazione:
B.F.L. Ward, "Recoil phase effect in exclusive B decays: Implications for CP violation", ACT PHY P B, 32(6), 2001, pp. 1835-1846

Abstract

In the perturbative QCD approach to exclusive B decays to two light mesons, the leading twist contribution corresponds to those diagrams in the Lepage-Brodsky expansion in which the would be spectator quark receives its recoil momentum via one gluon exchange. We show that the resulting amplitude, which in the spectator model is real, acquires an imaginary part which may be comparable in size to its real part. Thus, this source of the strong interaction phase in the amplitude must be taken into account in general to discuss, reliably, the expectations for CP violation in B decays at any B-factory type scenario.

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Documento generato il 29/01/20 alle ore 19:06:34