Pregled bibliografske jedinice broj: 735744
Lattice QCD and QCD sum rule determination of the decay constants of ηc, J/ψ and hc states
Lattice QCD and QCD sum rule determination of the decay constants of ηc, J/ψ and hc states // Nuclear physics. B, 883 (2014), 306-327 doi:10.1016/j.nuclphysb.2014.03.024 (međunarodna recenzija, članak, znanstveni)
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Naslov
Lattice QCD and QCD sum rule determination of the decay constants of ηc, J/ψ and hc states
Autori
Bečirević, Damir ; Duplančić, Goran ; Klajn, Bruno ; Melić, Blaženka ; Sanfilippo, Francesco
Izvornik
Nuclear physics. B (0550-3213) 883
(2014);
306-327
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
lattice QCD ; QCD sum rules ; charmonia
Sažetak
We compute the decay constants of the lowest View the cc¯-states with quantum numbers JPC=0−+(ηc), 1−− (J/ψ), and 1+−(hc) by using lattice QCD and QCD sum rules. We consider the coupling of J/ψ to both the vector and tensor currents. Lattice QCD results are obtained from the unquenched (Nf=2) simulations using twisted mass QCD at four lattice spacings, allowing us to take the continuum limit. On the QCD sum rule side we use the moment sum rules. The results are then used to discuss the rate of ηc→γγ decay, and to comment on the factorization in View the B→Xcc K decays, with Xcc being either ηc or J/ψ.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
POVEZANOST RADA
Projekti:
098-0982930-2864 - Fundamentalne interakcije u fizici elementarnih čestica i kozmologiji (Duplančić, Goran, MZOS ) ( CroRIS)
Ustanove:
Institut "Ruđer Bošković", Zagreb
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
