Observation of hc Radiative Decay hc → γη' and Evidence for hc → γη /M. Ablikim, M. N. Achasov, X. C. Ai [et.al.]

Электронный ресурс
Другой Автор
Ablikim, M.
Ai, X. C.
Chelkov, G. A.
Achasov, M. N.
Источник
Physical Review Letters 2016 Vol. 116, № 25. P. 251802-1-251802-7
Аннотация
A search for radiative decays of the P-wave spin singlet charmonium resonance hc is performed based on 4.48×108 ψ′ events collected with the BESIII detector operating at the BEPCII storage ring. Events of the reaction channels hc→γη′ and γη are observed with a statistical significance of 8.4σ and 4.0σ, respectively, for the first time. The branching fractions of hc→γη′ and hc→γη are measured to be B(hc→γη′)=(1.52±0.27±0.29)×10−3 and B(hc→γη)=(4.7±1.5±1.4)×10−4, respectively, where the first errors are statistical and the second are systematic uncertainties.
Всего оценка: 0
Нет записей для отображения.
 
 
 
01838nab a2200325 c 4500
001
 
 
vtls000552764
003
 
 
RU-ToGU
005
 
 
20181202154300.0
007
 
 
cr |
008
 
 
181202|2016    xxu     s         a eng dd
024
7
$a 10.1103/PhysRevLett.116.251802 $2 doi
035
$a to000552764
039
9
$a 201812021543 $b staff $c 201612120817 $d cat202 $c 201612081322 $d VLOAD $y 201612081310 $z VLOAD
040
$a RU-ToGU $b rus $c RU-ToGU
245
1
0
$a Observation of hc Radiative Decay hc → γη' and Evidence for hc → γη $c M. Ablikim, M. N. Achasov, X. C. Ai [et.al.]
520
3
$a A search for radiative decays of the P-wave spin singlet charmonium resonance hc is performed based on 4.48×108 ψ′ events collected with the BESIII detector operating at the BEPCII storage ring. Events of the reaction channels hc→γη′ and γη are observed with a statistical significance of 8.4σ and 4.0σ, respectively, for the first time. The branching fractions of hc→γη′ and hc→γη are measured to be B(hc→γη′)=(1.52±0.27±0.29)×10−3 and B(hc→γη)=(4.7±1.5±1.4)×10−4, respectively, where the first errors are statistical and the second are systematic uncertainties.
653
$a BESIII, детектор
653
$a чармоний
653
$a BEPCII, коллайдер
655
4
$a статьи в журналах
700
1
$a Ablikim, M.
700
1
$a Ai, X. C.
700
1
$a Chelkov, G. A.
700
1
$a Achasov, M. N.
773
0
$t Physical Review Letters $d 2016 $g Vol. 116, № 25. P. 251802-1-251802-7 $x 0031-9007
852
4
$a RU-ToGU
856
7
$u http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000552764
908
$a статья
999
$a VIRTUA
999
$a VTLSSORT0010*0030*0050*0070*0080*0240*0350*0390*0400*2450*5200*6530*6531*6532*6550*7000*7003*7001*7002*7730*8520*8560*9080*9992
Нет комментариев.
Предмет
статьи в журналах
Резюме
A search for radiative decays of the P-wave spin singlet charmonium resonance hc is performed based on 4.48×108 ψ′ events collected with the BESIII detector operating at the BEPCII storage ring. Events of the reaction channels hc→γη′ and γη are observed with a statistical significance of 8.4σ and 4.0σ, respectively, for the first time. The branching fractions of hc→γη′ and hc→γη are measured to be B(hc→γη′)=(1.52±0.27±0.29)×10−3 and B(hc→γη)=(4.7±1.5±1.4)×10−4, respectively, where the first errors are statistical and the second are systematic uncertainties.