Observation of a Charged Charmoniumlike Structure in e⁺e⁻ → (D*D̅*)^± π^∓ at √s=4.26 GeV

DSpace/Manakin Repository

Observation of a Charged Charmoniumlike Structure in e⁺e⁻ → (D*D̅*)^± π^∓ at √s=4.26 GeV

Show full item record

Title: Observation of a Charged Charmoniumlike Structure in e⁺e⁻ → (D*D̅*)^± π^∓ at √s=4.26 GeV
Author(s):
Ablikim, M.;
Achasov, M. N.;
Albayrak, O.;
Ambrose, D. J.;
An, F. F.;
An, Q.;
Bai, J. Z.;
Lou, Xinchou (UT Dallas)
Sponsors: BESIII Collaboration
Item Type: Article
Keywords: Atomic mass
Phase space (PHSP)
Abstract: We study the process e⁺e⁻ → (D*D̅*)^± π^∓ at a center-of-mass energy of 4.26 GeV using a 827 pb⁻¹ data sample obtained with the BESIII detector at the Beijing Electron Positron Collider. Based on a partial reconstruction technique, the Born cross section is measured to be (137 ± 9 ± 15) pb. We observe a structure near the (D*D̅*)^± threshold in the π^∓ recoil mass spectrum, which we denote as the Z_c ^±(4025). The measured mass and width of the structure are (4026.3 ± 2.6 ± 3.7) MeV/c² and (24.8 ± 5.6 ± 7.7) MeV, respectively. Its production ratio σ(e⁺ e⁻ → Z_c ^±(4025)π^∓ → (D*D̅*)^± π^∓ / σ(e⁺ e⁻ → ((D*D̅*)^± π^∓ is determined to be 0.65 ± 0.09 ± 0.06. The first uncertainties are statistical and the second are systematic.
Publisher: American Physical Society
ISSN: 0031-9007
Persistent Link: http://dx.doi.org/10.1103/PhysRevLett.112.132001
http://hdl.handle.net/10735.1/4043
Terms of Use: © American Physical Society

Files in this item

Files Size Format View
NSM-FR-XLou-271064.03.pdf 715.5Kb PDF View/Open Article

This item appears in the following Collection(s)


Show full item record