Observation of a resonant structure in e+e− → ωη and another in e+e− → ωπ0 at center-of-mass energies between 2.00 and 3.08 GeV

BESIII Collaboration; M. Ablikim; M.N. Achasov; P. Adlarson; S. Ahmed; M. Albrecht; A. Amoroso; Q. An; Nasser Kalantar-Nayestanaki; Rosa Kappert; Myroslav Kavatsyuk; Johan Messchendorp; Viktor Rodin

doi:10.1016/j.physletb.2020.136059

Observation of a resonant structure in e⁺e⁻ → ωη and another in e⁺e⁻ → ωπ⁰ at center-of-mass energies between 2.00 and 3.08 GeV

BESIII Collaboration, M. Ablikim, M.N. Achasov, P. Adlarson, S. Ahmed, M. Albrecht, A. Amoroso, Q. An, Nasser Kalantar-Nayestanaki, Rosa Kappert, Myroslav Kavatsyuk, Johan Messchendorp, Viktor Rodin

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Born cross sections for the processes e+e−→ωη and e+e−→ωπ0 have been determined for center-of-mass energies between 2.00 and 3.08 GeV with the BESIII detector at the BEPCII collider. The results obtained in this work are consistent with previous measurements but with improved precision. Two resonant structures are observed. In the e+e−→ωη cross sections, a resonance with a mass of (2176±24±3)MeV/c2 and a width of (89±50±5)MeV is observed with a significance of 6.2σ. Its properties are consistent with the ϕ(2170). In the e+e−→ωπ0 cross sections, a resonance denoted Y(2040) is observed with a significance of more than 10σ. Its mass and width are determined to be (2034±13±9)MeV/c2 and (234±30±25)MeV, respectively, where the first uncertainties are statistical and the second ones are systematic.

Originele taal-2	English
Artikelnummer	136059
Aantal pagina's	11
Tijdschrift	Physics Letters B
Volume	813
DOI's	https://doi.org/10.1016/j.physletb.2020.136059
Status	Published - 10-feb.-2021

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Observation of a resonant structure in e+e− → ωη and another in e+e− → ωπ0 at center-of-mass energies between 2.00 and 3.08 GeVFinal publisher's version, 785 KBLicentie: CC BY

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BESIII Collaboration, Ablikim, M., Achasov, M. N., Adlarson, P., Ahmed, S., Albrecht, M., Amoroso, A., An, Q., Kalantar-Nayestanaki, N., Kappert, R., Kavatsyuk, M., Messchendorp, J., & Rodin, V. (2021). Observation of a resonant structure in e⁺e⁻ → ωη and another in e⁺e⁻ → ωπ⁰ at center-of-mass energies between 2.00 and 3.08 GeV. Physics Letters B, 813, Artikel 136059. https://doi.org/10.1016/j.physletb.2020.136059

@article{76c65abfbc5a4dfc9d2185bbaa824bbe,

title = "Observation of a resonant structure in e+e− → ωη and another in e+e− → ωπ0 at center-of-mass energies between 2.00 and 3.08 GeV",

abstract = "Born cross sections for the processes e+e−→ωη and e+e−→ωπ0 have been determined for center-of-mass energies between 2.00 and 3.08 GeV with the BESIII detector at the BEPCII collider. The results obtained in this work are consistent with previous measurements but with improved precision. Two resonant structures are observed. In the e+e−→ωη cross sections, a resonance with a mass of (2176±24±3)MeV/c2 and a width of (89±50±5)MeV is observed with a significance of 6.2σ. Its properties are consistent with the ϕ(2170). In the e+e−→ωπ0 cross sections, a resonance denoted Y(2040) is observed with a significance of more than 10σ. Its mass and width are determined to be (2034±13±9)MeV/c2 and (234±30±25)MeV, respectively, where the first uncertainties are statistical and the second ones are systematic.",

author = "{BESIII Collaboration} and M. Ablikim and M.N. Achasov and P. Adlarson and S. Ahmed and M. Albrecht and A. Amoroso and Q. An and Nasser Kalantar-Nayestanaki and Rosa Kappert and Myroslav Kavatsyuk and Johan Messchendorp and Viktor Rodin",

year = "2021",

month = feb,

day = "10",

doi = "10.1016/j.physletb.2020.136059",

language = "English",

volume = "813",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "ELSEVIER SCIENCE BV",

}

BESIII Collaboration, Ablikim, M, Achasov, MN, Adlarson, P, Ahmed, S, Albrecht, M, Amoroso, A, An, Q, Kalantar-Nayestanaki, N, Kappert, R, Kavatsyuk, M , Messchendorp, J & Rodin, V 2021, 'Observation of a resonant structure in e⁺e⁻ → ωη and another in e⁺e⁻ → ωπ⁰ at center-of-mass energies between 2.00 and 3.08 GeV', Physics Letters B, vol. 813, 136059. https://doi.org/10.1016/j.physletb.2020.136059

TY - JOUR

T1 - Observation of a resonant structure in e+e− → ωη and another in e+e− → ωπ0 at center-of-mass energies between 2.00 and 3.08 GeV

AU - BESIII Collaboration

AU - Ablikim, M.

AU - Achasov, M.N.

AU - Adlarson, P.

AU - Ahmed, S.

AU - Albrecht, M.

AU - Amoroso, A.

AU - An, Q.

AU - Kalantar-Nayestanaki, Nasser

AU - Kappert, Rosa

AU - Kavatsyuk, Myroslav

AU - Messchendorp, Johan

AU - Rodin, Viktor

PY - 2021/2/10

Y1 - 2021/2/10

N2 - Born cross sections for the processes e+e−→ωη and e+e−→ωπ0 have been determined for center-of-mass energies between 2.00 and 3.08 GeV with the BESIII detector at the BEPCII collider. The results obtained in this work are consistent with previous measurements but with improved precision. Two resonant structures are observed. In the e+e−→ωη cross sections, a resonance with a mass of (2176±24±3)MeV/c2 and a width of (89±50±5)MeV is observed with a significance of 6.2σ. Its properties are consistent with the ϕ(2170). In the e+e−→ωπ0 cross sections, a resonance denoted Y(2040) is observed with a significance of more than 10σ. Its mass and width are determined to be (2034±13±9)MeV/c2 and (234±30±25)MeV, respectively, where the first uncertainties are statistical and the second ones are systematic.

AB - Born cross sections for the processes e+e−→ωη and e+e−→ωπ0 have been determined for center-of-mass energies between 2.00 and 3.08 GeV with the BESIII detector at the BEPCII collider. The results obtained in this work are consistent with previous measurements but with improved precision. Two resonant structures are observed. In the e+e−→ωη cross sections, a resonance with a mass of (2176±24±3)MeV/c2 and a width of (89±50±5)MeV is observed with a significance of 6.2σ. Its properties are consistent with the ϕ(2170). In the e+e−→ωπ0 cross sections, a resonance denoted Y(2040) is observed with a significance of more than 10σ. Its mass and width are determined to be (2034±13±9)MeV/c2 and (234±30±25)MeV, respectively, where the first uncertainties are statistical and the second ones are systematic.

U2 - 10.1016/j.physletb.2020.136059

DO - 10.1016/j.physletb.2020.136059

M3 - Article

SN - 0370-2693

VL - 813

JO - Physics Letters B

JF - Physics Letters B

M1 - 136059

ER -

Observation of a resonant structure in e+e− → ωη and another in e+e− → ωπ0 at center-of-mass energies between 2.00 and 3.08 GeV

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Observation of a resonant structure in e⁺e⁻ → ωη and another in e⁺e⁻ → ωπ⁰ at center-of-mass energies between 2.00 and 3.08 GeV