Observation of a vector charmoniumlike state in  e + e − → D + s D s 1 ( 2536 ) − + c . c .

Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/1676

Title:	Observation of a vector charmoniumlike state in e + e − → D + s D s 1 ( 2536 ) − + c . c .
Authors:	Patra, S.
Keywords:	Hybrid mesons Quarkonia Lepton colliders
Issue Date:	2019
Publisher:	American Physical Society
Citation:	Physical Review D, 100(11).
Abstract:	Using a data sample of 921.9 fb − 1 collected with the Belle detector, we study the process of e + e − → D + s D s 1 ( 2536 ) − + c . c . via initial-state radiation. We report the first observation of a vector charmoniumlike state decaying to D + s D s 1 ( 2536 ) − + c . c . with a significance of 5.9 σ , including systematic uncertainties. The measured mass and width are ( 4625.9 + 6.2 − 6.0 ( stat ) ± 0.4 ( syst ) ) MeV / c 2 and ( 49.8 + 13.9 − 11.5 ( stat ) ± 4.0 ( syst ) ) MeV , respectively. The product of the e + e − → D + s D s 1 ( 2536 ) − + c . c . cross section and the branching fraction of D s 1 ( 2536 ) − → ¯ D * 0 K − is measured from the D s ¯ D s 1 ( 2536 ) threshold to 5.59 GeV.
Description:	Only IISERM authors are available in the record.
URI:	https://journals.aps.org/prd/abstract/10.1103/PhysRevD.100.111103 http://hdl.handle.net/123456789/1676
Appears in Collections:	Research Articles

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