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Ablikim, M.; Yang, H. X.; Zhang, Z.P.; Hussain, T.; Yu, H. W.; Held, T.; Liu, C.L.; Varner, G.; Liu, F.H.; Li, T.; Gong, W. X.; Braun, S.; He, Z. Y.; Tang, X.; Shan, W.; Malik, Q. A.; Zhao, Ling; Qiu, J. F.; Zhang, Z.Y.; Briere, R. A.; Liu, H.B.; Zhemchugov, A.; Goetzen, K.; Yu, J. S.; Olsen, S. L.; Hu, H. M.; Kavatsyuk, M.; Peters, K.; Tapan, I.; Xie, Y.; Wang, L.S.; Chen, X.; Wang, Y.F.; Deng, Z. Y.; Çetin, S. A.; Zhang, J.W.; Wang, M.; Pacetti, S.; Zheng, B.; Chu, Y. P.; Zhao, Z.; Mao, Y.; Boyko, I. R.; Du, S. X.; Dai, H. L.; Destefanis, M.; Huang, G. M.; Cheng, H. P.; Luo, T.; Albrecht, M.; Wang, D.; Leyhe, M.; Guo, Y. P.; Zhao, Y. B.; Li, Cheng; Zhao, X.; Wang, P.L.; Ma, Tian; Kupść, A.; Gao, Q.; Zhang, H.Y.; Liu, K.Y.; Zhang, C.C.; Fuks, O.; Huang, Y.; Zhang, J.Y.; Ачасов, М. Н.; Lin, D. X.; Li, C.H.; Moriya, K.; Liu, K.; Wiedner, U.; Wang, Z.H.; Mo, Y. J.; Guan, Y. H.; Zhang, B.Y.; Hu, T.; Wang, X.F.; Dong, C.; Huang, X. T.; Li, Z.B.; Jiao, Z.; Huang, Hongxia; Li, J.C.; Ping, J. L.; Mitchell, R. E.; Rong, G.; Zhang, Z.H.; Li, Lei; Sheng, H. Y.; Li, D.M.; Zhu, Y.; Ning, Z.; Sun, Y. J.; Calcaterra, A.; Liu, Feng; Li, X.L.; Zhao, T. C.; Wu, N.; Fang, S. S.; Ma, F.C.; Uman, I.; Guo, A. Q.; Liu, B.J.; Sarantsev, A.; Yuan, C. Z.; Xia, L.; Li, W.G.; Liu, Qin; Liu, H.H.; An, Q.; Li, Zhou; Denig, A.; Lange, J. S.; Song, X. Y.; Zhou, X. Y.; Huang, J. S.; Zallo, A.; Yu, C. X.; Wang, D.Y.; Zhang, H.H.; Fu, C. D.; Çakır, O.; He, K. L.; Thorndike, E. H.; Zheng, J. P.; Zang, S. L.; Shao, M.; Zhu, Z. A.; Qi, M.; Liu, Z.A.; Wen, S. P.; Cao, G. F.; Schoenning, K.; Bondarenko, O.; Xue, Z.; Albayrak, O.; Zhou, X. K.; Shen, X. Y.; Zhang, J.Z.; Liu, Y.B.; Xu, G. F.; Qiao, C. F.; Chen, X.R.; Wang, Z.Y.; Gu, Y. T.; Chen, J.C.; Li, H.B.; Jiao, J. B.; Nefedov, Y.; Maas, F. E.; Ji, Xiangdong; Ye, M.; Fava, L.; An, F. F.; Lü, H. J.; Zhang, C.B.; Jiang, L. L.; Niu, X. Y.; Ferroli, R. Baldini; Liu, Han; Zheng, Y.; Wang, Y.Q.; Zhang, J.Q.; Wu, L. H.; He, M.; Sun, Z. T.; Yu, B. X.; Qin, Z. H.; Zhao, S. J.; Ding, Y.; Zhao, G.; Wang, Z.; Cai, Xinxia; Luo, C. L.; Li, D.; Jiang, L. W.; Ouyang, Q.; Zhang, Y.; Shen, C. P.; Yan, L.; Spruck, B.; Peng, H.; Li, P.R.; Luo, M. X.; Redmer, C. F.; Zhu, Y. S.; Zhang, Y.H.; Liu, Q.; Pelizaeus, M.; Ji, Q.; Wang, Y.D.; Ai, X.; Ma, H.L.; Fang, J.; Ye, H.; Sun, Z. J.; Li, W.D.; Luo, X. L.; Liu, Dong; Wei, J. B.; Zhong, B.; Poling, R.; Liu, S.B.; Jiang, Min; Zhou, X. K.; Gradl, W.; Min, T. J.; Kang, X. L.; Liu, P.L.; Guo, L. B.; Zhao, Q.; Yan, W.; Zou, B. S.; Li, Cui; Feng, C. Q.; Jiang, X. S.; Ji, X. L.; Loehner, H.; Johansson, T.; Muramatsu, H.; Li, G.; Tang, C. J.; Liu, C.X.; Ullrich, M.; Boger, E.; Maggiora, M.; Dong, J.; Mao, Z. P.; Yuncu, A.; Liu, Zhiqiang; Yan, Y. H.; Xiao, D.; Chang, J. F.; Kühn, W.; Liu, H.M.; Chen, M.L.; Qian, S.; Shepherd, M. R.; Wang, Z.G.; Liu, Zhiqing; Ripka, M.; Chen, Hu; Wang, B.; Chen, Y.B.; Harris, F. A.; Xu, X. P.; Zhang, X.J.; Wang, S.G.; Wang, K.; Ma, Xiaoyan; Sun, J. F.; Yang, L.; Sun, Y.; Geng, C.; Nisar, S.; Morales, C. Morales; Sun, S. S.; Bertani, M.; Zhang, C.; Bai, J. Z.; Ye, M.H.; Ma, Qiang; Rashid, K. H.; Lou, X. C.; Wang, Q.J.; Jin, D. P.; Ban, Y.; Kalantar‐Nayestanaki, N.; Zhao, M. G.; Kang, X. S.; Zhu, K. J.; Dedovich, D. V.; Zhao, J. W.; Bian, J. M.; Li, K.; Cronin-Hennessy, D.; Zeng, Y.; Yang, Y.; Wang, P.; Wei, D. H.; Gu, M. H.; Moeini, H.; Liu, Fang; Messchendorp, J. G.; Ping, R. G.; Lu, G. R.; Chen, H.S.; Lu, Y.; Yu, Shiqi; Fan, J.; Muchnoi, N. Yu.; Zhang, D.H.; Zou, J. H.; Greco, M.; Li, X.N.; Liang, Y. F.; Weidenkaff, P.; Ruan, X. D.; Ji, C. S.; Wu, Z.; Huang, G. S.; Li, X.Q.; Bennett, J. V.; Xu, Q. J.; Wang, W.; Zhou, X. R.; Denysenko, I.; Zhang, S.H.; Xia, Y.; Yuan, W. L.; Gao, Y.; Kornicer, M.; Nikolaev, I. B.; Chen, G.; Guo, Tingting; Song, W. M.; Larin, P.; Schumann, S.; Huang, L. Q.; Zhang, J.J.; Liu, Zhao; Dong, M. Y.; Lv, M.; Lai, W.; Mo, X. H.; Qin, X. S.; Hu, J.; Qin, Yao; Kloss, B.; Li, Q.J.; Toth, D.; Wang, L.L.; Liu, J.; Spataro, S.; Fang, Y.; Chen, S.J.; Chu, X. K.; Li, Xu; Wolke, M.; Zhang, X.Y.; Li, F.; Xiao, Z. J.; Liang, Y. T.; Zhang, B.X.; Dai, J. P.; Xu, Q.; Lu, J. G.; Werner, M.; Lü, X. R.; Liu, X.; Zafar, A. A.; Kopf, B.; Zhuang, J.; Jin, S.; Lara, M.; Yuan, Y.; Xiu, Q. L.; Yang, Yifan; Hou, Z. L.; Chelkov, G. A.; Cai, H.; Ambrose, D.; Ding, W. M.; Zhu, X.; Heng, Y. K.; Sun, G. X.; Liu, J.P.; Lü, H.; Han, Y. L.; Ma, Songde

doi:10.1103/physrevd.90.032007

Cited by 16 publications

(12 citation statements)

References 21 publications

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“…To estimate the background from the process e þ e − → ppπ 0 ðγÞ, we use the difference of the θ miss distributions between signal and background events. The MC samples generated based on the measured angular distributions of the process e þ e − → ppπ 0 [40,41] are used. Figure 8 shows the distributions of θ miss , the polar angle of the missing momentum, for data events and simulated signal and e þ e − → ppπ 0 background events.…”

Section: A Numbers Of Events From Thementioning

confidence: 99%

Study of the process e+e−→pp¯

Ablikim¹,

Ачасов²,

Adlarson³

et al. 2019

Phys. Rev. D

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The Born cross section for the process e þ e − → pp is measured using the initial state radiation technique with an undetected photon. This analysis is based on datasets corresponding to an integrated luminosity of 7.5 fb −1 , collected with the BESIII detector at the BEPCII collider at center of mass energies between 3.773 and 4.600 GeV. The Born cross section for the process e þ e − → pp and the proton effective form factor are determined in the pp invariant mass range between 2.0 and 3.8 GeV=c 2 divided into 30 intervals. The proton form factor ratio (jG E j=jG M j) is measured in 3 intervals of the pp invariant mass between 2.0 and 3.0 GeV=c 2 .

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Section: A Numbers Of Events From Thementioning

confidence: 99%

Study of the process e+e−→pp¯

Ablikim¹,

Ачасов²,

Adlarson³

et al. 2019

Phys. Rev. D

Self Cite

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“…Yet, since the phase space to DD is not excessively large, it is likely that the missing decays are simply the sum of all the many Okubo-Zweig-Iizuka (OZI)-suppressed hadronic decays, that have not been studied systematically in the theory. Estimations for the ψ(3770) production via pp annihilation are made in [23,24,25], which may possibly be measured at the PANDA experiment [26]. 40 Mass estimations for the ψ(3770) have also been made on the lattice [27,28].…”

Section: Introductionmentioning

confidence: 99%

Line-shape and poles of the ψ(3770)

Coito

Giacosa

2019

Nuclear Physics A

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We study the non-Breit-Wigner line-shape of the ψ(3770) resonance, predominantly a 1 3 D 1c c state, using an unitarized effective Lagrangian approach, including the one-loop effects of the nearby thresholds D + D − and D 0D0 . A fit of the theoretical result to the total cross-section e + e − → DD is performed, leading to a good description of data (χ 2 /d.o.f. ∼ 1.03). The partial cross sections e + e − → D 0D0 and e + e − → D + D − turn out to be separately in good agreement with the experiment. We find a pole at 3777−i12 MeV, that is within the Particle Data Group (PDG) mass and width estimation for this state. Quite remarkably, we find an additional, dynamically generated, companion pole at 3741 − i19 MeV, which is responsible for the deformation on the lower energy side of the line-shape. The width for the leptonic decay ψ(3770) → e + e − is 112 eV, hence smaller than the PDG fit of 262 ± 18 eV, yet in agreement with a recent experimental study. 45 monium seed state, which gets dressed by "clouds" of D + D − and D 0D0 mesons.Our aim is to study the deformation seen on the left side of the resonance in Ref.[9] with mesonic loops combined with the nearby thresholds. To this end, we use an effective relativistic Lagrangian approach in which a single vector state ψ ≡ ψ(3770) is coupled to channels D + D − and D 0D0 , as well as to lepton 50 pairs. The propagator of ψ is calculated at the resummed one-loop level and fulfills unitarization requirements. Then, we perform a fit of the four parameters of our approach, i.e. the effective couplings of ψ to DD and of ψ to leptons, the mass of ψ, and a cutoff responsible for the finite dimension of the ψ meson, to the experimental cross-section of the reaction e + e − → DD in Refs. [7] and 55[5], in the energy region up to 100 MeV above the D 0D0 threshold. We assume that the ψ(3770) resonance dominates in this energy range. We obtain a very good description of the data, which in turn allows us to determine in a novel and independent way the mass, width, and branching ratios of the ψ(3770).Moreover, we study in detail, to our knowledge for the first time, the poles of 60 this state. In fact, a pole was found in Ref. [16], using Fano resonances, at about 3778 − i14 MeV, though in lesser detail. Quite remarkably, we find two poles for this resonance, one which roughly corresponds to the peak of the resonance, the seed pole, and one additional dynamically generated pole, responsible for the enhancement left from the peak, which emerges due to the strong coupling function, turns out to be rather small, possibly due to the fact that the ψ(3770)

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“…CLEO Collaboration also studied ψ(2S) → ppπ 0 channel and got a similar strong N * (1440) peak [32]. There is no obvious N * (1440) peak for e + e − → ppπ 0 in the vicinity of the ψ(3770) [31].…”

Section: N * Production From CC Decaysmentioning

confidence: 91%

“…, and ψ(3770) → ppπ 0 [31]. Some interesting insights on the N * s have been gained through this novel source of information.…”

Section: N * Production From CC Decaysmentioning

confidence: 99%

$N^*$ Production from $e^+e^-$ Annihilations

Zou¹

2018

Preprint

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Up to now, the N * production from e + e − annihilations has been studied only around charmonium region. Charmonium decays to N * s are analogous to (time-like) EM form factors in that the charm quark annihilation provides a nearly pointlike (ggg) current. Complementary to other sources, such as πN , eN and γN reactions, this new source for N * spectroscopy has a few advantages, such as an isospin filter and a low spin filter. The experimental results on N * from e + e − annihilations and their phenomenological implications are reviewed. Possible new sources on N * production from e + e − annihilations are discussed.

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Study ofe+e−→pp

Cited by 16 publications

References 21 publications

Study of the process e+e−→pp¯

Study of the process e+e−→pp¯

Line-shape and poles of the ψ(3770)

$N^*$ Production from $e^+e^-$ Annihilations

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