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Improved measurement of the decays η′→π+π−π+(0)π−(0) and search for the rare decay η′→4π0. / The BESIII Collaboration ; Николаев, Иван Борисович; Мучной, Николай Юрьевич.

в: Physical Review D, Том 109, № 3, 032006, 16.02.2024.

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

Harvard

The BESIII Collaboration, Николаев, ИБ & Мучной, НЮ 2024, 'Improved measurement of the decays η′→π+π−π+(0)π−(0) and search for the rare decay η′→4π0', Physical Review D, Том. 109, № 3, 032006. https://doi.org/10.1103/PhysRevD.109.032006

APA

The BESIII Collaboration, Николаев, И. Б., & Мучной, Н. Ю. (2024). Improved measurement of the decays η′→π+π−π+(0)π−(0) and search for the rare decay η′→4π0. Physical Review D, 109(3), [032006]. https://doi.org/10.1103/PhysRevD.109.032006

Vancouver

The BESIII Collaboration, Николаев ИБ, Мучной НЮ. Improved measurement of the decays η′→π+π−π+(0)π−(0) and search for the rare decay η′→4π0. Physical Review D. 2024 февр. 16;109(3):032006. doi: 10.1103/PhysRevD.109.032006

Author

The BESIII Collaboration ; Николаев, Иван Борисович ; Мучной, Николай Юрьевич. / Improved measurement of the decays η′→π+π−π+(0)π−(0) and search for the rare decay η′→4π0. в: Physical Review D. 2024 ; Том 109, № 3.

BibTeX

@article{6162a025722548268c0833c4be6c9029,
title = "Improved measurement of the decays η′→π+π−π+(0)π−(0) and search for the rare decay η′→4π0",
abstract = "Using a sample of 10 billion J/ψ events collected with the BESIII detector, the decays η′→π+π-π+π-, η′→π+π-π0π0 and η′→4π0 are studied via the process J/ψ→γη′. The branching fractions of η′→π+π-π+π- and η′→π+π-π0 π0 are measured to be (8.56±0.25(stat)±0.23(syst))×10-5 and (2.12±0.12(stat)±0.10(syst))×10-4, respectively, which are consistent with previous measurements but with improved precision. No significant η′→4π0 signal is observed, and the upper limit on the branching fraction of this decay is determined to be less than 1.24×10-5 at the 90% confidence level. In addition, an amplitude analysis of η′→π+π-π+π- is performed to extract the doubly virtual isovector form factor α for the first time. The measured value of α=1.22±0.33(stat)±0.04(syst), is in agreement with the prediction of the vector meson dominance model.",
author = "{BESIII Collaboration} and M. Ablikim and M. n. Achasov and P. Adlarson and X. c. Ai and R. Aliberti and A. Amoroso and M. r. An and Q. An and Y. Bai and O. Bakina and I. Balossino and Y. Ban and H.-R. Bao and V. Batozskaya and K. Begzsuren and N. Berger and M. Berlowski and M. Bertani and D. Bettoni and F. Bianchi and E. Bianco and A. Bortone and R. a. Briere and A. Brueggemann and H. Cai and X. Cai and Николаев, {Иван Борисович} and Мучной, {Николай Юрьевич}",
year = "2024",
month = feb,
day = "16",
doi = "10.1103/PhysRevD.109.032006",
language = "English",
volume = "109",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "American Physical Society",
number = "3",

}

RIS

TY - JOUR

T1 - Improved measurement of the decays η′→π+π−π+(0)π−(0) and search for the rare decay η′→4π0

AU - BESIII Collaboration

AU - Ablikim, M.

AU - Achasov, M. n.

AU - Adlarson, P.

AU - Ai, X. c.

AU - Aliberti, R.

AU - Amoroso, A.

AU - An, M. r.

AU - An, Q.

AU - Bai, Y.

AU - Bakina, O.

AU - Balossino, I.

AU - Ban, Y.

AU - Bao, H.-R.

AU - Batozskaya, V.

AU - Begzsuren, K.

AU - Berger, N.

AU - Berlowski, M.

AU - Bertani, M.

AU - Bettoni, D.

AU - Bianchi, F.

AU - Bianco, E.

AU - Bortone, A.

AU - Briere, R. a.

AU - Brueggemann, A.

AU - Cai, H.

AU - Cai, X.

AU - Николаев, Иван Борисович

AU - Мучной, Николай Юрьевич

PY - 2024/2/16

Y1 - 2024/2/16

N2 - Using a sample of 10 billion J/ψ events collected with the BESIII detector, the decays η′→π+π-π+π-, η′→π+π-π0π0 and η′→4π0 are studied via the process J/ψ→γη′. The branching fractions of η′→π+π-π+π- and η′→π+π-π0 π0 are measured to be (8.56±0.25(stat)±0.23(syst))×10-5 and (2.12±0.12(stat)±0.10(syst))×10-4, respectively, which are consistent with previous measurements but with improved precision. No significant η′→4π0 signal is observed, and the upper limit on the branching fraction of this decay is determined to be less than 1.24×10-5 at the 90% confidence level. In addition, an amplitude analysis of η′→π+π-π+π- is performed to extract the doubly virtual isovector form factor α for the first time. The measured value of α=1.22±0.33(stat)±0.04(syst), is in agreement with the prediction of the vector meson dominance model.

AB - Using a sample of 10 billion J/ψ events collected with the BESIII detector, the decays η′→π+π-π+π-, η′→π+π-π0π0 and η′→4π0 are studied via the process J/ψ→γη′. The branching fractions of η′→π+π-π+π- and η′→π+π-π0 π0 are measured to be (8.56±0.25(stat)±0.23(syst))×10-5 and (2.12±0.12(stat)±0.10(syst))×10-4, respectively, which are consistent with previous measurements but with improved precision. No significant η′→4π0 signal is observed, and the upper limit on the branching fraction of this decay is determined to be less than 1.24×10-5 at the 90% confidence level. In addition, an amplitude analysis of η′→π+π-π+π- is performed to extract the doubly virtual isovector form factor α for the first time. The measured value of α=1.22±0.33(stat)±0.04(syst), is in agreement with the prediction of the vector meson dominance model.

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85185762745&origin=inward&txGid=575cc349cd28df981092b3ea3a11c443

U2 - 10.1103/PhysRevD.109.032006

DO - 10.1103/PhysRevD.109.032006

M3 - Article

VL - 109

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 3

M1 - 032006

ER -

ID: 62718402