Study of e+e- → ωχcJ at center of mass energies from 4.21 to 4.42 GeV /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 2015 Vol. 114, № 9. P. 092003-1-092003-7
Аннотация
Based on data samples collected with the BESIII detector at the BEPCII collider at nine center of mass energies from 4.21 to 4.42 GeV, we search for the production of e+e−→ωχcJ (J=0, 1, 2). The process e+e−→ωχc0 is observed for the first time, and the Born cross sections at s√=4.23 and 4.26 GeV are measured to be (55.4±6.0±5.9) and (23.7±5.3±3.5)  pb, respectively, where the first uncertainties are statistical and the second are systematic. The ωχc0 signals at the other seven energies and the e+e−→ωχc1 and ωχc2 signals are not significant, and the upper limits on the cross sections are determined. By examining the ωχc0 cross section as a function of center of mass energy, we find that it is inconsistent with the line shape of the Y(4260) observed in e+e−→π+π−J/ψ. Assuming the ωχc0 signals come from a single resonance, we extract the mass and width of the resonance to be (4230±8±6)  MeV/c2 and (38±12±2)  MeV, respectively, and the statistical significance is more than 9σ.
Всего оценка: 0
Нет записей для отображения.
 
 
 
02517nab a2200337 c 4500
001
 
 
vtls000531928
003
 
 
RU-ToGU
005
 
 
20160519075400.0
007
 
 
cr |
008
 
 
160429|2015    xxu     s         a eng dd
024
7
$a 10.1103/PhysRevLett.114.092003 $2 doi
035
$a to000531928
039
9
$a 201605190754 $b cat202 $c 201605040837 $d cat202 $c 201604291029 $d VLOAD $y 201604291009 $z VLOAD
040
$a RU-ToGU $b rus $c RU-ToGU
245
1
0
$a Study of e+e- → ωχcJ  at center of mass energies from 4.21 to 4.42 GeV $c M. Ablikim, M. N. Achasov, X. C. Ai [et.al.]
520
3
$a Based on data samples collected with the BESIII detector at the BEPCII collider at nine center of mass energies from 4.21 to 4.42 GeV, we search for the production of e+e−→ωχcJ (J=0, 1, 2). The process e+e−→ωχc0 is observed for the first time, and the Born cross sections at s√=4.23 and 4.26 GeV are measured to be (55.4±6.0±5.9) and (23.7±5.3±3.5)  pb, respectively, where the first uncertainties are statistical and the second are systematic. The ωχc0 signals at the other seven energies and the e+e−→ωχc1 and ωχc2 signals are not significant, and the upper limits on the cross sections are determined. By examining the ωχc0 cross section as a function of center of mass energy, we find that it is inconsistent with the line shape of the Y(4260) observed in e+e−→π+π−J/ψ. Assuming the ωχc0 signals come from a single resonance, we extract the mass and width of the resonance to be (4230±8±6)  MeV/c2 and (38±12±2)  MeV, respectively, and the statistical significance is more than 9σ.
653
$a BESIII, детектор
653
$a BEPCII, коллайдер
653
$a электроны
655
4
$a статьи, опубликованные в зарубежных изданиях
700
1
$a Ablikim, M.
700
1
$a Ai, X. C.
700
1
$a Chelkov, G. A.
700
1
$a Achasov, M. N.
710
2
$a Томский государственный университет $b Радиофизический факультет $b Научные подразделения РФФ
773
0
$t Physical Review Letters $d 2015 $g Vol. 114, № 9. P. 092003-1-092003-7 $x 0031-9007
852
4
$a RU-ToGU
856
7
$u http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000531928
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*7100*7730*8520*8560*9080*9992
Нет комментариев.
Предмет
статьи, опубликованные в зарубежных изданиях
Резюме
Based on data samples collected with the BESIII detector at the BEPCII collider at nine center of mass energies from 4.21 to 4.42 GeV, we search for the production of e+e−→ωχcJ (J=0, 1, 2). The process e+e−→ωχc0 is observed for the first time, and the Born cross sections at s√=4.23 and 4.26 GeV are measured to be (55.4±6.0±5.9) and (23.7±5.3±3.5)  pb, respectively, where the first uncertainties are statistical and the second are systematic. The ωχc0 signals at the other seven energies and the e+e−→ωχc1 and ωχc2 signals are not significant, and the upper limits on the cross sections are determined. By examining the ωχc0 cross section as a function of center of mass energy, we find that it is inconsistent with the line shape of the Y(4260) observed in e+e−→π+π−J/ψ. Assuming the ωχc0 signals come from a single resonance, we extract the mass and width of the resonance to be (4230±8±6)  MeV/c2 and (38±12±2)  MeV, respectively, and the statistical significance is more than 9σ.