Measurement of e+e- →ηJ/ψ cross section from s =3.808 GeV to 4.951 GeV

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Measurement of e+e- →ηJ/ψ cross section from s =3.808 GeV to 4.951 GeV. / BESIII Collaboration ; Мучной, Николай Юрьевич ; Николаев, Иван Борисович.

In: Physical Review D, Vol. 109, No. 9, 092012, 29.05.2024.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{f691d1b3a7614012888dc83484215b57,

title = "Measurement of e+e- →ηJ/ψ cross section from s =3.808 GeV to 4.951 GeV",

abstract = "Using data samples with an integrated luminosity of 22.42 fb-1 collected by the BESIII detector operating at the BEPCII storage ring, we measure the cross sections of the e+e-→ηJ/ψ process at center-of-mass energies from 3.808 to 4.951 GeV. Three structures are observed in the line shape of the measured cross sections. A maximum-likelihood fit with ψ(4040), two additional resonances, and a nonresonant component are performed. The mass and width of the first additional state are (4219.7±2.5±4.5) MeV/c2 and (80.7±4.4±1.4) MeV, respectively, consistent with the ψ(4230). For the second state, the mass and width are (4386±13±17) MeV/c2 and (177±32±13) MeV, respectively, consistent with the ψ(4360). The first uncertainties are statistical, and the second ones are systematic. The statistical significance of ψ(4040) is 8.0σ and those for ψ(4230) and ψ(4360) are more than 10.0σ.",

author = "{BESIII Collaboration} and Achasov, {M. N.} and Мучной, {Николай Юрьевич} and Николаев, {Иван Борисович}",

year = "2024",

month = may,

day = "29",

doi = "10.1103/PhysRevD.109.092012",

language = "English",

volume = "109",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society",

number = "9",

}

RIS

TY - JOUR

T1 - Measurement of e+e- →ηJ/ψ cross section from s =3.808 GeV to 4.951 GeV

AU - BESIII Collaboration

AU - Achasov, M. N.

AU - Мучной, Николай Юрьевич

AU - Николаев, Иван Борисович

PY - 2024/5/29

Y1 - 2024/5/29

N2 - Using data samples with an integrated luminosity of 22.42 fb-1 collected by the BESIII detector operating at the BEPCII storage ring, we measure the cross sections of the e+e-→ηJ/ψ process at center-of-mass energies from 3.808 to 4.951 GeV. Three structures are observed in the line shape of the measured cross sections. A maximum-likelihood fit with ψ(4040), two additional resonances, and a nonresonant component are performed. The mass and width of the first additional state are (4219.7±2.5±4.5) MeV/c2 and (80.7±4.4±1.4) MeV, respectively, consistent with the ψ(4230). For the second state, the mass and width are (4386±13±17) MeV/c2 and (177±32±13) MeV, respectively, consistent with the ψ(4360). The first uncertainties are statistical, and the second ones are systematic. The statistical significance of ψ(4040) is 8.0σ and those for ψ(4230) and ψ(4360) are more than 10.0σ.

AB - Using data samples with an integrated luminosity of 22.42 fb-1 collected by the BESIII detector operating at the BEPCII storage ring, we measure the cross sections of the e+e-→ηJ/ψ process at center-of-mass energies from 3.808 to 4.951 GeV. Three structures are observed in the line shape of the measured cross sections. A maximum-likelihood fit with ψ(4040), two additional resonances, and a nonresonant component are performed. The mass and width of the first additional state are (4219.7±2.5±4.5) MeV/c2 and (80.7±4.4±1.4) MeV, respectively, consistent with the ψ(4230). For the second state, the mass and width are (4386±13±17) MeV/c2 and (177±32±13) MeV, respectively, consistent with the ψ(4360). The first uncertainties are statistical, and the second ones are systematic. The statistical significance of ψ(4040) is 8.0σ and those for ψ(4230) and ψ(4360) are more than 10.0σ.

UR - https://www.mendeley.com/catalogue/60974238-ee7b-3c32-a4d7-8e67b1a2bf81/

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85195835880&origin=inward&txGid=1385c5e371e3c09978e7acc4409b390e

U2 - 10.1103/PhysRevD.109.092012

DO - 10.1103/PhysRevD.109.092012

M3 - Article

VL - 109

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 9

M1 - 092012

ER -

ID: 62700201