Measurement of the matrix element for the decay eta ' -> eta pi(+)pi(-)

M. Ablikim; M. N. Achasov; O. Bondarenko; M. Kavatsyuk; Y. T. Liang; H. Loehner; J. G. Messchendorp; BESIII Collaboration

doi:10.1103/PhysRevD.83.012003

Measurement of the matrix element for the decay eta ' -> eta pi(+)pi(-)

M. Ablikim^*
, M. N. Achasov
, O. Bondarenko
, M. Kavatsyuk
, Y. T. Liang
, H. Loehner
, J. G. Messchendorp
, BESIII Collaboration

^*Corresponding author for this work

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

52 Citations (Scopus)

Abstract

The Dalitz plot of eta' -> eta pi(+)pi(-) decay is studied using (225.2 +/- 2.8) x 10(6) J/psi events collected with the BESIII detector at the BEPCII e(+)e(-) collider. With the largest sample of eta' decays to date, the parameters of the Dalitz plot are determined in a generalized and a linear representation. Also, the branching fraction of J/psi -> gamma eta' is determined to be (4.84 +/- 0.03 +/- 0.24) x 10(-3), where the first error is statistical and the second systematic.

Original language	English
Article number	012003
Number of pages	10
Journal	Physical Review D
Volume	83
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevD.83.012003
Publication status	Published - 18-Jan-2011

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Measurement of the matrix element for the decay
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title = "Measurement of the matrix element for the decay eta ' -> eta pi(+)pi(-)",

abstract = "The Dalitz plot of eta' -> eta pi(+)pi(-) decay is studied using (225.2 +/- 2.8) x 10(6) J/psi events collected with the BESIII detector at the BEPCII e(+)e(-) collider. With the largest sample of eta' decays to date, the parameters of the Dalitz plot are determined in a generalized and a linear representation. Also, the branching fraction of J/psi -> gamma eta' is determined to be (4.84 +/- 0.03 +/- 0.24) x 10(-3), where the first error is statistical and the second systematic.",

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author = "M. Ablikim and Achasov, \{M. N.\} and O. Bondarenko and M. Kavatsyuk and Liang, \{Y. T.\} and H. Loehner and Messchendorp, \{J. G.\} and \{BESIII Collaboration\}",

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doi = "10.1103/PhysRevD.83.012003",

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AU - Ablikim, M.

AU - Achasov, M. N.

AU - Bondarenko, O.

AU - Kavatsyuk, M.

AU - Liang, Y. T.

AU - Loehner, H.

AU - Messchendorp, J. G.

AU - BESIII Collaboration

PY - 2011/1/18

Y1 - 2011/1/18

N2 - The Dalitz plot of eta' -> eta pi(+)pi(-) decay is studied using (225.2 +/- 2.8) x 10(6) J/psi events collected with the BESIII detector at the BEPCII e(+)e(-) collider. With the largest sample of eta' decays to date, the parameters of the Dalitz plot are determined in a generalized and a linear representation. Also, the branching fraction of J/psi -> gamma eta' is determined to be (4.84 +/- 0.03 +/- 0.24) x 10(-3), where the first error is statistical and the second systematic.

AB - The Dalitz plot of eta' -> eta pi(+)pi(-) decay is studied using (225.2 +/- 2.8) x 10(6) J/psi events collected with the BESIII detector at the BEPCII e(+)e(-) collider. With the largest sample of eta' decays to date, the parameters of the Dalitz plot are determined in a generalized and a linear representation. Also, the branching fraction of J/psi -> gamma eta' is determined to be (4.84 +/- 0.03 +/- 0.24) x 10(-3), where the first error is statistical and the second systematic.

KW - MONTE-CARLO

U2 - 10.1103/PhysRevD.83.012003

DO - 10.1103/PhysRevD.83.012003

M3 - Article

SN - 1550-7998

VL - 83

JO - Physical Review D

JF - Physical Review D

IS - 1

M1 - 012003

ER -

Measurement of the matrix element for the decay eta ' -> eta pi(+)pi(-)

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