Precision measurement of the matrix elements for η→π+π−π0 and η→π0π0π0 decays

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Precision measurement of the matrix elements for η→π+π−π0 and η→π0π0π0 decays. / The BESIII Collaboration ; Мучной, Николай Юрьевич ; Николаев, Иван Борисович.

в: Physical Review D, Том 107, № 9, 18.05.2023.

Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование

BibTeX

@article{5e6d39c2df264fd09f1e41b1132ba0ad,

title = "Precision measurement of the matrix elements for η→π+π−π0 and η→π0π0π0 decays",

abstract = "A precision measurement of the matrix elements for η→π+π-π0 and η→π0π0π0 decays is performed using a sample of (10087±44)×106 J/ψ decays collected with the BESIII detector. The decay J/ψ→γη is used to select clean samples of 631,686 η→π+π-π0 decays and 272,322 η→π0π0π0 decays. The matrix elements for both channels are in reasonable agreement with previous measurements. The nonzero gX2Y term for the decay mode η→π+π-π0 is confirmed, as reported by the KLOE Collaboration, while the other higher-order terms are found to be insignificant. Dalitz plot asymmetries in the η→π+π-π0 decay are also explored and are found to be consistent with charge conjugation invariance. In addition, a cusp effect is investigated in the η→π0π0π0 decay, and no obvious structure around the π+π- mass threshold is observed.",

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

note = "Precision measurement of the matrix elements for η→π+π−π0 and η→π0π0π0 decays / BESIII Collaboration // Physical Review D. – 2023. – Vol. 107, No. 9. – P. 092007. – DOI 10.1103/physrevd.107.092007.",

year = "2023",

month = may,

day = "18",

doi = "10.1103/PhysRevD.107.092007",

language = "English",

volume = "107",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society",

number = "9",

}

RIS

TY - JOUR

T1 - Precision measurement of the matrix elements for η→π+π−π0 and η→π0π0π0 decays

AU - BESIII Collaboration

AU - Ablikim, M.

AU - Achasov, M. n.

AU - Мучной, Николай Юрьевич

AU - Николаев, Иван Борисович

N1 - Precision measurement of the matrix elements for η→π+π−π0 and η→π0π0π0 decays / BESIII Collaboration // Physical Review D. – 2023. – Vol. 107, No. 9. – P. 092007. – DOI 10.1103/physrevd.107.092007.

PY - 2023/5/18

Y1 - 2023/5/18

N2 - A precision measurement of the matrix elements for η→π+π-π0 and η→π0π0π0 decays is performed using a sample of (10087±44)×106 J/ψ decays collected with the BESIII detector. The decay J/ψ→γη is used to select clean samples of 631,686 η→π+π-π0 decays and 272,322 η→π0π0π0 decays. The matrix elements for both channels are in reasonable agreement with previous measurements. The nonzero gX2Y term for the decay mode η→π+π-π0 is confirmed, as reported by the KLOE Collaboration, while the other higher-order terms are found to be insignificant. Dalitz plot asymmetries in the η→π+π-π0 decay are also explored and are found to be consistent with charge conjugation invariance. In addition, a cusp effect is investigated in the η→π0π0π0 decay, and no obvious structure around the π+π- mass threshold is observed.

AB - A precision measurement of the matrix elements for η→π+π-π0 and η→π0π0π0 decays is performed using a sample of (10087±44)×106 J/ψ decays collected with the BESIII detector. The decay J/ψ→γη is used to select clean samples of 631,686 η→π+π-π0 decays and 272,322 η→π0π0π0 decays. The matrix elements for both channels are in reasonable agreement with previous measurements. The nonzero gX2Y term for the decay mode η→π+π-π0 is confirmed, as reported by the KLOE Collaboration, while the other higher-order terms are found to be insignificant. Dalitz plot asymmetries in the η→π+π-π0 decay are also explored and are found to be consistent with charge conjugation invariance. In addition, a cusp effect is investigated in the η→π0π0π0 decay, and no obvious structure around the π+π- mass threshold is observed.

UR - https://www.elibrary.ru/item.asp?id=61417423

UR - https://www.mendeley.com/catalogue/b1cc747c-ac8f-36de-92b3-b866fd5f235a/

U2 - 10.1103/PhysRevD.107.092007

DO - 10.1103/PhysRevD.107.092007

M3 - Article

VL - 107

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 9

ER -

ID: 68350246