Observation of a Neutral Charmoniumlike State Z_c(4025)⁰ in e⁺e⁻ → (D*D̅*)⁰ π⁰
| dc.contributor.ORCID | 0000-0003-0867-2189 (Lou, X.) | en_US |
| dc.contributor.author | Ablikim, M. | en_US |
| dc.contributor.author | Achasov, M. N. | en_US |
| dc.contributor.author | Ai, X. C. | en_US |
| dc.contributor.author | Albayrak, O. | en_US |
| dc.contributor.author | Albrecht, M. | en_US |
| dc.contributor.author | Ambrose, D. J. | en_US |
| dc.contributor.author | Amoroso, A. | en_US |
| dc.contributor.author | Lou, Xinchou | en_US |
| dc.contributor.author | BESIII Collaboration | en_US |
| dc.contributor.utdAuthor | Lou, Xinchou | en_US |
| dc.date.accessioned | 2016-07-05T21:46:14Z | |
| dc.date.available | 2016-07-05T21:46:14Z | |
| dc.date.created | 2015-10 | en_US |
| dc.date.issued | 2015-10 | en_US |
| dc.description.abstract | We report a study of the process e⁺e⁻ → (D*D̅*)⁰ π⁰ using e⁺e⁻ collision data samples with integrated luminosities of 1092 pb⁻¹ at √s̅ = 4.23 GeV and 826 pb⁻¹ at √s̅ = 4.26 GeV collected with the BESIII detector at the BEPCII storage ring. We observe a new neutral structure near the (D*D̅*)⁰ mass threshold in the π⁰ recoil mass spectrum, which we denote as Z_c(4025)⁰. Assuming a Breit-Wigner line shape, its pole mass and pole width are determined to be (4025.5_{-4.7}^{+2.0) ± 3.1) MeV/c² and (23.0 ± 6.0 ± 1.0) MeV, respectively. The Born cross sections of e⁺e⁻→ Z_c(4025)⁰π⁰ → (D*D̅*)⁰ π⁰ are measured to be (61.6 ± 8.2 ± 9.0) pb at √s̅ = 4.23 GeV and (43.4 ± 8.0 ± 5.4) pb at √s̅ = 4.26 GeV. The first uncertainties are statistical and the second are systematic. | en_US |
| dc.identifier.bibliographicCitation | Ablikim, M., M. N. Achasov, X. C. Ai, O. Albayrak, et al. 2015. "Observation of a Neutral Charmoniumlike State Z_c(4025)⁰ in e⁺e⁻ → (D*D̅*)⁰ π⁰." Physical Review Letters 115(18), doi:10.1103/PhysRevLett.115.182002 | en_US |
| dc.identifier.issn | 0031-9007 | en_US |
| dc.identifier.issue | 18 | en_US |
| dc.identifier.uri | http://hdl.handle.net/10735.1/4866 | |
| dc.identifier.volume | 115 | en_US |
| dc.relation.uri | http://dx.doi.org/10.1103/PhysRevLett.115.182002 | |
| dc.rights | ©2015 American Physical Society | en_US |
| dc.source | Physical Review Letters | |
| dc.subject | Semileptonic decays | en_US |
| dc.subject | Branching fractions (Nuclear physics) | en_US |
| dc.subject | Leptons (Nuclear physics)--Decay | en_US |
| dc.subject | Causality (Physics) | en_US |
| dc.subject | Atomic mass | en_US |
| dc.title | Observation of a Neutral Charmoniumlike State Z_c(4025)⁰ in e⁺e⁻ → (D*D̅*)⁰ π⁰ | en_US |
| dc.type | Text | en_US |
| dc.type.genre | Article | en_US |