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

In: Physical Review D, Vol. 109, No. 3, 032006, 16.02.2024.

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

Harvard

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, vol. 109, no. 3, 032006. https://doi.org/10.1103/PhysRevD.109.032006

APA

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

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 Feb 16;109(3):032006. doi: 10.1103/PhysRevD.109.032006

Author

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. In: Physical Review D. 2024 ; Vol. 109, No. 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 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 - 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