Measurement of the matrix element for the decay<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>η</mml:mi><mml:mo>′</mml:mo></mml:msup><mml:mo>→</mml:mo><mml:mi>η</mml:mi><mml:msup><mml:mi>π</mml:mi><mml:mo>+</mml:mo></mml:msup><mml:msup><mml:mi>π</mml:mi><mml:mo>−</mml:mo></mml:msup></mml:math>

Ablikim, M.; Ачасов, М. Н.; An, L.; An, Q.; An, Zhongfu; Bai, J. Z.; Baldini, R.; Ban, Y.; Becker, J.; Berger, N.; Bertani, M.; Bian, J. M.; Bondarenko, O.; Boyko, I. R.; Briere, R. A.; Bytev, V.; Cai, X.; Cao, G. F.; Cao, X. X.; Chang, J. F.; Chelkov, G.; G., Chen,; Chen, H. S.; Chen, J. C.; Chen, M. L.; Chen, Shulei; Chen, Y.; Chen, Y. B.; Cheng, H. P.; Chu, Y. P.; Cronin-Hennessy, D.; Dai, H. L.; Dai, J. P.; Dedovich, D.; Deng, Z. Y.; Denysenko, I.; Destefanis, M.; Ding, Y.; Dong, L. Y.; Dong, M. Y.; Du, S. X.; Duan, Mai-Ying; Fan, Rui; Fang, J.; Fang, S. S.; Feng, C. Q.; Fu, C. D.; Fu, J.; Gao, Y.; Geng, C.; Goetzen, K.; Gong, W. X.; Greco, M.; Grishin, S. V.; Gu, M. H.; Gu, Y. T.; Guan, Y. H.; Guo, A. Q.; Guo, L. B.; Guo, Y. P.; Hao, X. Q.; Harris, F. A.; He, K. L.; He, Miao; He, Z. Y.; Heng, Y. K.; Hou, Z. L.; Hu, H. M.; Hu, J. F.; Hu, T.; Huang, Bin; Huang, G. M.; Huang, J. S.; Huang, X. T.; Huang, Y.; Hussain, T.; Ji, C. S.; Ji, Q.; Ji, X. B.; Ji, X. L.; Jia, L. K.; Jiang, L. L.; Jiang, X. S.; Jiao, J. B.; Jiao, Z.; Jin, D. P.; Jin, S.; Jing, F.; Kavatsyuk, M.; Komamiya, S.; Kuehn, W.; Lange, J. S.; Leung, J. K. C.; Li, Cheng; Li, Cui; Li, D. M.; Li, F.; Li, G.; Li, H. B.; Li, J. C.; Li, Lei; Li, N. B.; Li, Q. J.; Li, W. D.; Li, W. G.; Li, X. L.; Li, X. N.; Li, X. Q.; Li, X. R.; Li, Z. B.; Liang, H.; Liang, Y. F.; Liang, Y. T.; Liao, G. R.; Liao, X. T.; Liu, B. J.; Liu, C. L.; Liu, C. X.; Liu, C. Y.; Liu, F. H.; Liu, Fang; Liu, Feng; Liu, G. C.; Liu, H.; Liu, H. B.; Liu, H. M.; Liu, H. W.; Liu, J. P.; Liu, K.; Liu, K. Y.; Liu, Q.; Liu, S. B.; Liu, X.; Liu, X. H.; Liu, Yangxuan; Liu, Y. W.; Liu, Yong; Liu, Z. A.; Liu, Z. Q.; Loehner, H.; Lu, G. R.; Lü, H. J.; Lu, J. G.; Lü, Q. W.; Lü, X. R.; Lu, Y. P.; Luo, C. L.; Luo, M. X.; Luo, T.; Luo, X. L.; L., C.; C., F.; L., H.; M., Q.; Ma, Tian; Ma, X.B.; Y., X.; Maggiora, M.; Malik, Q. A.; Mao, H. S.; Mao, Y.; Mao, Z. P.; Messchendorp, J. G.; Min, J.; Mitchell, R. E.; Mo, X. H.; Muchnoi, N. Yu.; Nefedov, Y.; Ning, Z.; Olsen, S. L.; Ouyang, Q.; Pacetti, S.; Pelizaeus, M.; Peters, K.; Ping, J. L.; Ping, R. G.; Poling, R.; Pun, C. S. J.; Qi, M.; Qian, S.; Qiao, C. F.; Qin, X. S.; Qiu, J. F.; Rashid, K. H.; Rong, G.; Ruan, X. D.; Sarantsev, A.; Schulze, J.; Shao, M.; Shen, C. P.; Shen, X. Y.; Sheng, H. Y.; Shepherd, M. R.; Song, X. Y.; Sonoda, S.; Spataro, S.; Spruck, B.; Sun, D. H.; Sun, G. X.; Sun, J. F.; Sun, S. S.; Sun, X.; Sun, Y. J.; Sun, Y. Z.; Sun, Z. J.; Sun, Z. T.; Tang, C. J.; Tang, X.; Tian, H. L.; Toth, D.; Varner, G.; Wan, X.; Wang, B. Q.; K., Wang,; Wang, L. L.; Wang, L. S.; Wang, M.; Wang, P.; Wang, P. L.; Wang, Q.; Wang, S. G.; Wang, X. L.; Wang, Y. D.; Wang, Y. F.; Wang, Y. Q.; Wang, Z.; Wang, Z. G.; Wang, Z. Y.; Wei, D. H.; Wen, Q. G.; Wen, S. P.; Wiedner, U.; Wu, L. H.; Wu, N.; Wu, W.; Wu, Z.; Xiao, Z. J.; Xie, Y.; Xu, G. F.; Xu, G.; Xu, H.; Xu, Y.; Zhao-yu, XU; Xu, Z. Z.; Xue, Z.; Yan, L.; Yan, W. B.; Yan, Y. H.; Yang, H. X.; Yang, Mao-Zhi; Yang, Tao; Yang, Y.; Yang, Yifan; Ye, M.; Ye, M. H.; Yu, B. X.; Yu, C. X.; Yu, L.; Yuan, C. Z.; Yuan, W. L.; Yuan, Y.; Zafar, A. A.; Zallo, A.; Zeng, Yun; Zhang, B. X.; Zhang, B. Y.; Zhang, C. C.; Zhang, Doujuan; Zhang, H. H.; Zhang, H. Y.; Zhang, J.; Zhang, J. W.; Zhang, J. Y.; Zhang, J. Z.; Zhang, L.; Zhang, S. H.; Zhang, T. R.; Zhang, X. J.; Zhang, X. Y.; Y., Zhang,; Zhang, Y. H.; Zhang, Z. P.; Zhang, Z. Y.; Zhao, G.; Zhao, H. S.; Zhao, Jiawei; Zhao, J. W.; Liu, Zhao; Zhao, Ling; Zhao, M. G.; Zhao, Q.; Zhao, S. J.; Zhao, T. C.; Zhao, X.; Zhao, Y. B.; Zhao, Z.; Zhao, Z.; Zhemchugov, A.; Zheng, B.; Zheng, J. P.; Zheng, Y.; Zheng, Z. P.; Zhong, B.; Zhong, J.; Zhong, L.; Li, Zhou; Zhou, Xiang; Zhou, X. R.; Zhu, C.; Zhu, K. J.; Zhu, S. H.; Zhu, X.; Zhu, X.; Zhu, Y. S.; Zhu, Z. A.; Zhuang, J.; Zou, B. S.; Zou, J. H.; Zuo, J. X.; Zweber, P.

doi:10.1103/physrevd.83.012003

Cited by 36 publications

(26 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…More recent measurements of γη (′) branching fractions have been reported by CLEO-c [51]. The last update of the ψ → γη ′ branching fraction has been given by BESIII [52] and reads B(ψ → γη (′) ) = (4.84 ± 0.03(stat) ± 0.24(sys)) x 10 −3 , which is consistent with the BESII value within 1.5σ and with the CLEO value within 1.4σ. The ψ ′ → γη (′) decays have also been observed by BESIII [53], but no new mixing angle estimate has been reported by the Collaboration.…”

Section: Present Statusmentioning

confidence: 99%

η−η′mixing: From electromagnetic transitions to weak decays of charm and beauty hadrons

2012

View full text Add to dashboard Cite

It has been realized for a long time that knowing the η and η ′ wave functions in terms of quark and gluon components probes our understanding of nonperturbative QCD dynamics. Great effort has been given to this challenge, yet no clear picture has emerged even with the most recent KLOE data. We point out which measurements would be most helpful in arriving at a more definite conclusion. A better knowledge of these wave functions will significantly help to disentangle the weight of different decay subprocesses in semileptonic decays of D + , D + s and B + mesons. The resulting insights will be instrumental in treating even nonleptonic B transitions involving η and η ′ and their CP asymmetries; thus they can sharpen the case for or against new physics intervening there.

show abstract

Section: Present Statusmentioning

confidence: 99%

η−η′mixing: From electromagnetic transitions to weak decays of charm and beauty hadrons

2012

View full text Add to dashboard Cite

show abstract

“…Dalitz plot parameters of the η → η π + π − decay from the BESIII [12] experiment were used as input parameters for the generated events. A total of 10 5 γ + p → η p events, each with a photon beam energy of 2.5 GeV were generated in the phase space model for this analysis.…”

Section: Model To Fold the Detector Resolutionsmentioning

confidence: 99%

“…It is, therefore, important to measure the Dalitz plot parameters precisely with good statistics and resolution. The Dalitz plot parameters of the η → η π + π − decay have been measured in the experiments of the VES [11] and the BESIII [12] collaborations. GAMS-4π [13] and IHEP-IISN-LANL-LAPP collaborations [7] have reported the Dalitz plot parameters for the neutral decay mode (η π 0 π 0 ) of the η meson.…”

Section: Introductionmentioning

confidence: 99%

An improvement to the measurement of Dalitz plot parameters

Ghosh

Roy

2017

Pap. Phys.

View full text Add to dashboard Cite

Precise measurement of the Dalitz plot parameters of the η → η π + π − decay gives a better insight of the dynamics of the heavy pseudo-scalar meson. Various measurements of the Dalitz plot parameters of the η meson have been performed with the detection of all the final state particles including the neutral decay of η → 2γ. In many experiments, reconstruction of the η meson from the neutral decay modes comes with the disadvantage of poor resolution and low efficiency compared to that of the charged particles. In this article, a study of the Dalitz plot parameters keeping the η meson as a missing particle is presented. The method is found to be advantageous in the case of poor photon resolution. Effect of the charged particle resolution on the Dalitz variable Y is also examined. This work may provide guidance to select a suitable method for the Dalitz plot analysis, depending on the detector resolution.

show abstract

“…The total number of J/ψ events is (2.252 ± 0.028) × 10 8 , determined from inclusive J/ψ hadronic decays [15], and the total number of ψ ′ events is (1.06 ± 0.04)× 10 8 , determined from inclusive ψ ′ hadronic events [16]. The uncertainty on the number of J/ψ events is 1.3%, and the uncertainty on the number of ψ ′ events is 4%.…”

Section: Systematic Uncertaintiesmentioning

confidence: 99%