Analysis of the mass and width of the Y(4274) as axialvector molecule-like state

2016/12/31 by Zhi-Gang Wang
Physics and Astronomy · #hep-ph

paper · pdf · doi:10.1140/epjc/s10052-017-4751-7

published as Eur. Phys. J. C77 (2017) 174 · 16 pages, 4 figures. arXiv admin note: text overlap with arXiv:1607.00701

arxiv created 2017/02/17 · arxiv updated 2017/03/21

Abstract

In this article, we assign the Y(4274) to be the color octet-octet type axialvector molecule-like state with J^PC=1⁺⁺ tentatively, and construct the color octet-octet type axialvector current to study its mass and width with the QCD sum rules in details. The predicted mass favors assigning the Y(4274) to be the color octet-octet type molecule-like state, but the predicted width disfavors assigning the Y(4274) to be the color octet-octet type molecule-like state strongly. The Y(4274) may be the conventional charmonium state χ_c1(\rm 3P), and it is important to observe the decay Y(4274)→ J/ψω to diagnose the nature of the Y(4274).

Citations

• Reanalysis of the X(4140) as axialvector tetraquark state with QCD sum rules