doi:10.1140/epjc/s10052-017-5421-5
Agaev, S. S.
Azizi, K.
Sundu, H.
Spectroscopic parameters and decays of the resonance Zb(10610)
The resonance Zb(10610) is investigated as the diquark–antidiquark Zb=[bu][bd¯] state with spin–parity JP=1+ . The mass and current coupling of the resonance Zb(10610) are evaluated using QCD two-point sum rule and taking into account the vacuum condensates up to ten dimensions. We study the vertices ZbΥ(nS)π(n=1,2,3) by applying the QCD light-cone sum rule to compute the corresponding strong couplings gZbΥ(nS)π and widths of the decays Zb→Υ(nS)π . We explore also the vertices Zbhb(mP)π(m=1,2) and calculate the couplings gZbhb(mP)π and the widths of the decay channels Zb→hb(mP)π . To this end, we calculate the mass and decay constants of the hb(1P) and hb(2P) mesons. The results obtained are compared with experimental data of the Belle Collaboration.
Springer/Società Italiana di Fisica
2017-12-7
http://repo.scoap3.org/record/22648
10.1140/epjc/s10052-017-5421-5
http://repo.scoap3.org/record/22648