Observation of the doubly radiative decay η' → γγπ0 /M. Ablikim, M. N. Achasov, S. Ahmed [et.al.]

Электронный ресурс
Другой Автор
Ablikim, M.
Ahmed, S.
Chelkov, G. A.
Achasov, M. N.
Источник
Physical Review D 2017 Vol. 96, № 1. P. 012005-1-012005-8
Аннотация
Based on a sample of 1.31 billion J/ψ events collected with the BESIII detector, we report the study of the doubly radiative decay η′→γγπ0 for the first time, where the η′ meson is produced via the J/ψ→γη′ decay. The branching fraction of η′→γγπ0 inclusive decay is measured to be B(η′→γγπ0)Incl=(3.20±0.07(stat)±0.23(sys))×10−3, while the branching fractions of the dominant process η′→γω and the nonresonant component are determined to be B(η′→γω)×B(ω→γπ0)=(23.7±1.4(stat)±1.8(sys))×10−4 and B(η′→γγπ0)NR=(6.16±0.64(stat)±0.67(sys))×10−4, respectively. In addition, the Mγγ2-dependent partial widths of the inclusive decay are also presented.
Всего оценка: 0
Нет записей для отображения.
 
 
 
01919nab a2200325 c 4500
001
 
 
vtls000626128
003
 
 
RU-ToGU
005
 
 
20180510102900.0
007
 
 
cr |
008
 
 
180503|2017    xxu     s         a eng d
024
7
$a 10.1103/PhysRevD.96.012005 $2 doi
035
$a to000626128
039
9
$a 201805101029 $b cat202 $c 201805031609 $d VLOAD $y 201805031537 $z VLOAD
040
$a RU-ToGU $b rus $c RU-ToGU
245
1
0
$a Observation of the doubly radiative decay η' → γγπ0 $c M. Ablikim, M. N. Achasov, S. Ahmed [et.al.]
504
$a Библиогр.: 21 назв.
520
3
$a Based on a sample of 1.31 billion J/ψ events collected with the BESIII detector, we report the study of the doubly radiative decay η′→γγπ0 for the first time, where the η′ meson is produced via the J/ψ→γη′ decay. The branching fraction of η′→γγπ0 inclusive decay is measured to be B(η′→γγπ0)Incl=(3.20±0.07(stat)±0.23(sys))×10−3, while the branching fractions of the dominant process η′→γω and the nonresonant component are determined to be B(η′→γω)×B(ω→γπ0)=(23.7±1.4(stat)±1.8(sys))×10−4 and B(η′→γγπ0)NR=(6.16±0.64(stat)±0.67(sys))×10−4, respectively. In addition, the Mγγ2-dependent partial widths of the inclusive decay are also presented.
653
$a BESIII, детектор
653
$a мезоны
655
4
$a статьи в журналах
700
1
$a Ablikim, M.
700
1
$a Ahmed, S.
700
1
$a Chelkov, G. A.
700
1
$a Achasov, M. N.
773
0
$t Physical Review D $d 2017 $g Vol. 96, № 1. P. 012005-1-012005-8 $x 1550-7998
852
4
$a RU-ToGU
856
7
$u http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000626128
908
$a статья
999
$a VIRTUA               
999
$a VTLSSORT0010*0030*0050*0070*0080*0240*0350*0390*0400*2450*5040*5200*6530*6531*6550*7000*7003*7001*7002*7730*8520*8560*9080*9992
Нет комментариев.
Предмет
статьи в журналах
Резюме
Based on a sample of 1.31 billion J/ψ events collected with the BESIII detector, we report the study of the doubly radiative decay η′→γγπ0 for the first time, where the η′ meson is produced via the J/ψ→γη′ decay. The branching fraction of η′→γγπ0 inclusive decay is measured to be B(η′→γγπ0)Incl=(3.20±0.07(stat)±0.23(sys))×10−3, while the branching fractions of the dominant process η′→γω and the nonresonant component are determined to be B(η′→γω)×B(ω→γπ0)=(23.7±1.4(stat)±1.8(sys))×10−4 and B(η′→γγπ0)NR=(6.16±0.64(stat)±0.67(sys))×10−4, respectively. In addition, the Mγγ2-dependent partial widths of the inclusive decay are also presented.