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Annihilation effects in B -> pi pi from QCD light-cone sum rules


Khodjamirian, A.; Mannel, Th.; Melcher, M.; Melić, Blaženka
Annihilation effects in B -> pi pi from QCD light-cone sum rules // Physical Review D, 72 (2005), 9; 094012-1 doi:10.1103/PhysRevD.72.094012 (međunarodna recenzija, članak, znanstveni)


Naslov
Annihilation effects in B -> pi pi from QCD light-cone sum rules

Autori
Khodjamirian, A. ; Mannel, Th. ; Melcher, M. ; Melić, Blaženka

Izvornik
Physical Review D (0556-2821) 72 (2005), 9; 094012-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
QCD; annihilation

Sažetak
Using the method of QCD light-cone sum rules, we calculate the $B \to \pi\pi$ hadronic matrix elements with annihilation topology. We obtain a finite result, including the related strong phase. Numerically, the annihilation effects in $B\to \pi\pi$ turn out to be small with respect to the factorizable emission mechanism. Our predictions, together with the earlier sum rule estimates of emission and penguin contributions, are used for the phenomenological analysis of $B\to \pi\pi$ channels. We predict a $\Delta I=1/2$ transition amplitude which significantly differs from this amplitude extracted from the current data.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
0098002

Ustanove
Institut "Ruđer Bošković", Zagreb

Autor s matičnim brojem:
Blaženka Melić, (181332)

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • SCI-EXP, SSCI i/ili A&HCI


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