Spectroscopic parameters and decays of the resonance Z(b)(10610)
Üst veriTüm öğe kaydını göster
KünyeAgaev, S. S., Azizi, K., Sundu, H. (2017). Spectroscopic parameters and decays of the resonance Z(b)(10610). The European Physical Journal C, 77(12), 1-12. http://dx.doi.org/10.1140/epjc/s10052-017-5421-5
The resonance Zb(10610) is investigated as the diquark-antidiquark Zb = [bu][(b) over bar(d) over bar] state with spin-parity J(P) = 1(+). The mass and current coupling of the resonance Z(b)(10610) are evaluated using QCD two-point sum rule and taking into account the vacuum condensates up to ten dimensions. We study the vertices Z(b)r(nS)pi (n = 1, 2, 3) by applying the QCD light-cone sum rule to compute the corresponding strong couplings gZb.(nS) p and widths of the decays Z(b)-> r(nS)pi. We explore also the vertices Z(b)h(b)(mP)pi (m = 1, 2) and calculate the couplings gZ(b)h(b)(mP) p and the widths of the decay channels Z(b) -> hb(mP)pi To this end, we calculate the mass and decay constants of the h(b)(1P) and h(b)(2P) mesons. The results obtained are compared with experimental data of the Belle Collaboration.