Study on the Resonant Parameters of Y (4220) and Y (4390)

Many vector charmonium-like states have been reported recently in the cross sections of e+e-→ωχc0, π+π-hc, π+π-J/ψ, π+π-ψ(3686), and π+D0D⁎-+c.c. To better understand the nature of these states, a combined fit is performed to these cross sections by using three resonances Y(4220), Y(4390), and Y(466...

Full description

Saved in:
Bibliographic Details
Published in:Advances in high energy physics 2018-01, Vol.2018 (2018), p.1-7
Main Authors: Zhang, Jielei, Wang, Rumin, Yuan, Limin
Format: Article
Language:English
Subjects:
Collaboration
Cosmology
Cross-sections
Experiments
Parameters
Physics
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Many vector charmonium-like states have been reported recently in the cross sections of e+e-→ωχc0, π+π-hc, π+π-J/ψ, π+π-ψ(3686), and π+D0D⁎-+c.c. To better understand the nature of these states, a combined fit is performed to these cross sections by using three resonances Y(4220), Y(4390), and Y(4660). The resonant parameters for the three resonances are obtained. We emphasize that two resonances Y(4220) and Y(4390) are sufficient to explain these cross sections below 4.6 GeV. The lower limits of Y(4220) and Y(4390)’s leptonic decay widths are also determined to be (36.4±2.0±4.2) and (123.8±6.5±9.0) eV.
ISSN:1687-7357
1687-7365
DOI:10.1155/2018/5428734