Observation of a vector charmoniumlike state in e+e−→D+sDs1(2536)−+c.c.

S, Jia and C P, Shen and Giri, Anjan Kumar and et al, . (2019) Observation of a vector charmoniumlike state in e+e−→D+sDs1(2536)−+c.c. arXiv.org.

Full text not available from this repository. (Request a copy)

Abstract

Using a data sample of 921.9 fb−1 collected with the Belle detector, we study the process of e+e−→D+sDs1(2536)−+c.c. via initial-state radiation. We report the first observation of a vector charmoniumlike state decaying to D+sDs1(2536)−+c.c. with a significance of 5.9σ, including the systematic uncertainties. The measured mass and width are (4625.9+6.2−6.0(stat.)±0.4(syst.)) MeV/c2 and (49.8+13.9−11.5(stat.)±4.0(syst.)) MeV, respectively. The product of the e+e−→D+sDs1(2536)−+c.c. cross section and the branching fraction of Ds1(2536)−→D¯∗0K− is measured from the DsD¯s1(2536) threshold to 5.59~GeV.

[error in script]

IITH Creators: