Pregled bibliografske jedinice broj: 214484
Annihilation effects in B -> pi pi from QCD light-cone sum rules
Annihilation effects in B -> pi pi from QCD light-cone sum rules // Physical review. D, Particles, fields, gravitation, and cosmology, 72 (2005), 9; 094012, 20 doi:10.1103/PhysRevD.72.094012 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 214484 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Annihilation effects in B -> pi pi from QCD light-cone sum rules
Autori
Khodjamirian, Alexander ; Mannel, Thomas ; Melcher, M. ; Melić, Blaženka
Izvornik
Physical review. D, Particles, fields, gravitation, and cosmology (1550-7998) 72
(2005), 9;
094012, 20
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
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
