Measurement of Energy-Dependent Pair-Production Cross Section and Electromagnetic Form Factors of a Charmed Baryon

Ablikim, M.; Achasov, M. N.; Adlarson, P.; Ai, X. C.; Aliberti, R.; Amoroso, A.; An, M. R.; An, Q.; Bai, Y.; Bakina, O.; Balossino, I.; Ban, Y.; Batozskaya, V.; Begzsuren, K.; Berger, N.; Berlowski, M.; Bertani, M.; Bettoni, D.; Bianchi, F.; Bianco, E.; Bortone, A.; Boyko, I.; Briere, R. A.; Brueggemann, A.; Cai, H.; Cai, X.; Calcaterra, A.; Cao, G. F.; Cao, N.; Cetin, S. A.; Chang, J. F.; Chang, T. T.; Chang, W. L.; Che, G. R.; Chelkov, G.; Chen, C.; Chen, Chao; Chen, G.; Chen, H. S.; Chen, M. L.; Chen, S. J.; Chen, S. M.; Chen, T.; Chen, X. R.; Chen, X. T.; Chen, Y. B.; Chen, Y. Q.; Chen, Z. J.; Cheng, W. S.; Choi, S. K.; Chu, X.; Cibinetto, G.; Coen, S. C.; Cossio, F.; Cui, J. J.; Dai, H. L.; Dai, J. P.; Dbeyssi, A.; de Boer, R. E.; Dedovich, D.; Deng, Z. Y.; Denig, A.; Denysenko, I.; Destefanis, M.; De Mori, F.; Ding, B.; Ding, X. X.; Ding, Y.; Ding, Y.; Dong, J.; Dong, L. Y.; Dong, M. Y.; Dong, X.; Du, M. C.; Du, S. X.; Duan, Z. H.; Egorov, P.; Fan, Y. H. Y.; Fan, Y. L.; Fang, J.; Fang, S. S.; Fang, W. X.; Fang, Y.; Farinelli, R.; Fava, L.; Feldbauer, F.; Felici, G.; Feng, C. Q.; Feng, J. H.; Fischer, K.; Fritsch, M.; Fritzsch, C.; Fu, C. D.; Fu, J. L.; Fu, Y. W.; Gao, H.; Gao, Y. N.; Gao, Yang; Garbolino, S.; Garzia, I.; Ge, P. T.; Ge, Z. W.; Geng, C.; Gersabeck, E. M.; Gilman, A.; Goetzen, K.; Gong, L.; Gong, W. X.; Gradl, W.; Gramigna, S.; Greco, M.; Gu, M. H.; Guan, C. Y.; Guan, Z. L.; Guo, A. Q.; Guo, L. B.; Guo, M. J.; Guo, R. P.; Guo, Y. P.; Guskov, A.; Han, T. T.; Han, W. Y.; Hao, X. Q.; Harris, F. A.; He, K. K.; He, K. L.; Heinsius, F. H. H.; Heinz, C. H.; Heng, Y. K.; Herold, C.; Holtmann, T.; Hong, P. C.; Hou, G. Y.; Hou, X. T.; Hou, Y. R.; Hou, Z. L.; Hu, H. M.; Hu, J. F.; Hu, T.; Hu, Y.; Huang, G. S.; Huang, K. X.; Huang, L. Q.; Huang, X. T.; Huang, Y. P.; Hussain, T.; Hüsken, N.; Imoehl, W.; Jackson, J.; Jaeger, S.; Janchiv, S.; Jeong, J. H.; Ji, Q.; Ji, Q. P.; Ji, X. B.; Ji, X. L.; Ji, Y. Y.; Jia, X. Q.; Jia, Z. K.; Jiang, H. J.; Jiang, P. C.; Jiang, S. S.; Jiang, T. J.; Jiang, X. S.; Jiang, Y.; Jiao, J. B.; Jiao, Z.; Jin, S.; Jin, Y.; Jing, M. Q.; Johansson, T.; Kabana, S.; Kalantar-Nayestanaki, N.; Kang, X. L.; Kang, X. S.; Kappert, R.; Kavatsyuk, M.; Ke, B. C.; Khoukaz, A.; Kiuchi, R.; Kliemt, R.; Kolcu, O. B.; Kopf, B.; Kuessner, M.; Kupsc, A.; Kühn, W.; Lane, J. J.; Larin, P.; Lavania, A.; Lavezzi, L.; Lei, T. T.; Lei, Z. H.; Leithoff, H.; Lellmann, M.; Lenz, T.; Li, C.; Li, C.; Li, C. H.; Li, Cheng; Li, D. M.; Li, F.; Li, G.; Li, H.; Li, H. B.; Li, H. J.; Li, H. N.; Li, Hui; Li, J. R.; Li, J. S.; Li, J. W.; Li, K. L.; Li, Ke; Li, L. J.; Li, L. K.; Li, Lei; Li, M. H.; Li, P. R.; Li, Q. X.; Li, S. X.; Li, T.; Li, W. D.; Li, W. G.; Li, X. H.; Li, X. L.; Li, Xiaoyu; Li, Y. G.; Li, Z. J.; Liang, C.; Liang, H.; Liang, H.; Liang, H.; Liang, Y. F.; Liang, Y. T.; Liao, G. R.; Liao, L. Z.; Liao, Y. P.; Libby, J.; Limphirat, A.; Lin, D. X.; Lin, T.; Liu, B. J.; Liu, B. X.; Liu, C.; Liu, C. X.; Liu, F. H.; Liu, Fang; Liu, Feng; Liu, G. M.; Liu, H.; Liu, H. M.; Liu, Huanhuan; Liu, Huihui; Liu, J. B.; Liu, J. L.; Liu, J. Y.; Liu, K.; Liu, K. Y.; Liu, Ke; Liu, L.; Liu, L. C.; Liu, Lu; Liu, M. H.; Liu, P. L.; Liu, Q.; Liu, S. B.; Liu, T.; Liu, W. K.; Liu, W. M.; Liu, X.; Liu, Y.; Liu, Y.; Liu, Y. B.; Liu, Z. A.; Liu, Z. Q.; Lou, X. C.; Lu, F. X.; Lu, H. J.; Lu, J. G.; Lu, X. L.; Lu, Y.; Lu, Y. P.; Lu, Z. H.; Luo, C. L.; Luo, M. X.; Luo, T.; Luo, X. L.; Lyu, X. R.; Lyu, Y. F.; Ma, F. C.; Ma, H. L.; Ma, J. L.; Ma, L. L.; Ma, M. M.; Ma, Q. M.; Ma, R. Q.; Ma, R. T.; Ma, X. Y.; Ma, Y.; Ma, Y. M.; Maas, F. E.; Maggiora, M.; Malde, S.; Malik, Q. A.; Mangoni, A.; Mao, Y. J.; Mao, Z. P.; Marcello, S.; Meng, Z. X.; Messchendorp, J. G.; Mezzadri, G.; Miao, H.; Min, T. J.; Mitchell, R. E.; Mo, X. H.; Muchnoi, N. Yu.; Muskalla, J.; Nefedov, Y.; Nerling, F.; Nikolaev, I. B.; Ning, Z.; Nisar, S.; Niu, Y.; Olsen, S. L.; Ouyang, Q.; Pacetti, S.; Pan, X.; Pan, Y.; Pathak, A.; Patteri, P.; Pei, Y. P.; Pelizaeus, M.; Peng, H. P.; Peters, K.; Ping, J. L.; Ping, R. G.; Plura, S.; Pogodin, S.; Prasad, V.; Qi, F. Z.; Qi, H.; Qi, H. R.; Qi, M.; Qi, T. Y.; Qian, S.; Qian, W. B.; Qiao, C. F.; Qiao, X. K.; Qin, J. J.; Qin, L. Q.; Qin, X. P.; Qin, X. S.; Qin, Z. H.; Qiu, J. F.; Qu, S. Q.; Redmer, C. F.; Ren, K. J.; Rivetti, A.; Rodin, V.; Rolo, M.; Rong, G.; Rosner, Ch.; Ruan, S. N.; Salone, N.; Sarantsev, A.; Schelhaas, Y.; Schoenning, K.; Scodeggio, M.; Shan, K. Y.; Shan, W.; Shan, X. Y.; Shangguan, J. F.; Shao, L. G.; Shao, M.; Shen, C. P.; Shen, H. F.; Shen, W. H.; Shen, X. Y.; Shi, B. A.; Shi, H. C.; Shi, J. L.; Shi, J. Y.; Shi, Q. Q.; Shi, R. S.; Shi, X.; Song, J. J.; Song, T. Z.; Song, W. M.; Song, Y. J.; Song, Y. X.; Sosio, S.; Spataro, S.; Stieler, F.; Su, Y. J.; Sun, G. B.; Sun, G. X.; Sun, H.; Sun, H. K.; Sun, J. F.; Sun, K.; Sun, L.; Sun, S. S.; Sun, T.; Sun, W. Y.; Sun, Y.; Sun, Y. J.; Sun, Y. Z.; Sun, Z. T.; Tan, Y. X.; Tang, C. J.; Tang, G. Y.; Tang, J.; Tang, Y. A.; Tao, L. Y.; Tao, Q. T.; Tat, M.; Teng, J. X.; Thoren, V.; Tian, W. H.; Tian, W. H.; Tian, Y.; Tian, Z. F.; Uman, I.; Wang, S. J.; Wang, B.; Wang, B. L.; Wang, Bo; Wang, C. W.; Wang, D. Y.; Wang, F.; Wang, H. J.; Wang, H. P.; Wang, J. P.; Wang, K.; Wang, L. L.; Wang, M.; Wang, Meng; Wang, S.; Wang, S.; Wang, T.; Wang, T. J.; Wang, W.; Wang, W.; Wang, W. P.; Wang, X.; Wang, X. F.; Wang, X. J.; Wang, X. L.; Wang, Y.; Wang, Y. D.; Wang, Y. F.; Wang, Y. H.; Wang, Y. N.; Wang, Y. Q.; Wang, Yaqian; Wang, Yi; Wang, Z.; Wang, Z. L.; Wang, Z. Y.; Wang, Ziyi; Wei, D.; Wei, D. H.; Weidner, F.; Wen, S. P.; Wenzel, C. W.; Wiedner, U.; Wilkinson, G.; Wolke, M.; Wollenberg, L.; Wu, C.; Wu, J. F.; Wu, L. H.; Wu, L. J.; Wu, X.; Wu, X. H.; Wu, Y.; Wu, Y. J.; Wu, Z.; Xia, L.; Xian, X. M.; Xiang, T.; Xiao, D.; Xiao, G. Y.; Xiao, S. Y.; Xiao, Y. L.; Xiao, Z. J.; Xie, C.; Xie, X. H.; Xie, Y.; Xie, Y. G.; Xie, Y. H.; Xie, Z. P.; Xing, T. Y.; Xu, C. F.; Xu, C. J.; Xu, G. F.; Xu, H. Y.; Xu, Q. J.; Xu, Q. N.; Xu, W.; Xu, W. L.; Xu, X. P.; Xu, Y. C.; Xu, Z. P.; Xu, Z. S.; Yan, F.; Yan, L.; Yan, W. B.; Yan, W. C.; Yan, X. Q.; Yang, H. J.; Yang, H. L.; Yang, H. X.; Yang, Tao; Yang, Y.; Yang, Y. F.; Yang, Y. X.; Yang, Yifan; Yang, Z. W.; Yao, Z. P.; Ye, M.; Ye, M. H.; Yin, J. H.; You, Z. Y.; Yu, B. X.; Yu, C. X.; Yu, G.; Yu, J. S.; Yu, T.; Yu, X. D.; Yuan, C. Z.; Yuan, L.; Yuan, S. C.; Yuan, X. Q.; Yuan, Y.; Yuan, Z. Y.; Yue, C. X.; Zafar, A. A.; Zeng, F. R.; Zeng, X.; Zeng, Y.; Zeng, Y. J.; Zhai, X. Y.; Zhai, Y. C.; Zhan, Y. H.; Zhang, A. Q.; Zhang, B. L.; Zhang, B. X.; Zhang, D. H.; Zhang, G. Y.; Zhang, H.; Zhang, H. H.; Zhang, H. H.; Zhang, H. Q.; Zhang, H. Y.; Zhang, J. J.; Zhang, J. L.; Zhang, J. Q.; Zhang, J. W.; Zhang, J. X.; Zhang, J. Y.; Zhang, J. Z.; Zhang, Jianyu; Zhang, Jiawei; Zhang, L. M.; Zhang, L. Q.; Zhang, Lei; Zhang, P.; Zhang, Q. Y.; Zhang, Shuihan; Zhang, Shulei; Zhang, X. D.; Zhang, X. M.; Zhang, X. Y.; Zhang, Xuyan; Zhang, Y.; Zhang, Y.; Zhang, Y. T.; Zhang, Y. H.; Zhang, Yan; Zhang, Yao; Zhang, Z. H.; Zhang, Z. L.; Zhang, Z. Y.; Zhang, Z. Y.; Zhao, G.; Zhao, J.; Zhao, J. Y.; Zhao, J. Z.; Zhao, Lei; Zhao, Ling; Zhao, M. G.; Zhao, S. J.; Zhao, Y. B.; Zhao, Y. X.; Zhao, Z. G.; Zhemchugov, A.; Zheng, B.; Zheng, J. P.; Zheng, W. J.; Zheng, Y. H.; Zhong, B.; Zhong, X.; Zhou, H.; Zhou, L. P.; Zhou, X.; Zhou, X. K.; Zhou, X. R.; Zhou, X. Y.; Zhou, Y. Z.; Zhu, J.; Zhu, K.; Zhu, K. J.; Zhu, L.; Zhu, L. X.; Zhu, S. H.; Zhu, S. Q.; Zhu, T. J.; Zhu, W. J.; Zhu, Y. C.; Zhu, Z. A.; Zou, J. H.; Zu, J.; ,

doi:10.1103/physrevlett.131.191901

Cited by 18 publications

(15 citation statements)

References 56 publications

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“…[19] Very recently, the BESIII Collaboration published the new measurements of the 𝑒 + 𝑒 − → 𝛬 + 𝑐 Λ− 𝑐 reaction. [21] It is found that there is no peak around the energy of 𝑌 (4630), but, a long platform behavior from the reaction threshold to 4.66 GeV was observed, diverging from the Belle measurements around that energy region. This new experimental result stimulates further research on the EMFFs of 𝛬 + 𝑐 and the 𝑒 + 𝑒 − → 𝛬 + 𝑐 Λ− 𝑐 reaction near threshold.…”

Section: λ−mentioning

confidence: 84%

“…𝑐 reaction within the VMD model. It is found that the new measurements of the total cross sections (corresponding to the 𝛬 + 𝑐 effective form factors) from threshold up to 4.95 GeV and the 𝛬 + 𝑐 electromagnetic form factors [21] can be well described.…”

Section: λ−mentioning

confidence: 94%

“…This new experimental result stimulates further research on the EMFFs of 𝛬 + 𝑐 and the 𝑒 + 𝑒 − → 𝛬 + 𝑐 Λ− 𝑐 reaction near threshold. [22,23] In the present work, based on the new measurements by the BESIII Collaboration on the 𝑒 + 𝑒 − → 𝛬 + 𝑐 Λ− 𝑐 reaction, [21] we devoted to studying the EMFFs in the time-like region of 𝛬 + 𝑐 within an extended vector meson dominance model. In the VMD model, the electromagnetic form factors of the baryons are attributed to both the couplings of the virtual photon to the vector mesons and the vector mesons to the baryons.…”

Section: λ−mentioning

confidence: 99%

“…𝑐 reaction by the BESIII Collaboration. [21] Table Based on the above discussions, we take 𝜓(4500), 𝜓(4660), 𝜓(4790), and 𝜓(4900) into account in this work.…”

Section: λ−mentioning

confidence: 99%

“…𝑐 reaction and the magnetic form factors |𝐺M| of 𝛬 + 𝑐 from the reaction threshold to 4.96 GeV measured by the BESIII Collaboration. [16,21] There are 28 data points in total. The fitted parameters and errors are given in Table 2, with a reasonable small 𝜒 2 /d.o.f.…”

Section: λ−mentioning

confidence: 99%

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e+e−→Λc+Λ¯c− Cross Sections and the Λc+ Electromagnetic Form Factors within the Extended Vector Meson Dominance Model

Chen 陈,

Yan 闫,

Xie 谢

2024

Chinese Phys. Lett.

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Within the extended vector meson dominance model, we investigate the $e^+ e^- \to \Lambda^+_c \bar{\Lambda}^-_c$ reaction and the electromagnetic form factors of the charmed baryon $\Lambda_c^+$. The model parameters are determined by fitting them to the cross sections of the process $e^+e^-\rightarrow \Lambda_c^+ \bar{\Lambda}_c^-$ and the magnetic form factor $|G_M|$ of $\Lambda^+_c$. By considering four charmoniumlike states, called $\psi(4500)$, $\psi(4660)$, $\psi(4790)$, and $\psi(4900)$, we can well describe the current data on the $e^+ e^- \to \Lambda^+_c \bar{\Lambda}^-_c$ reaction from the reaction threshold up to $4.96 \ \mathrm{GeV}$. In addition to the total cross sections and $|G_M|$, the ratio $|G_E/G_M|$ and the effective form factor $|G_{\mathrm{eff}}|$ for $\Lambda^+_c$ are also calculated, and found that these calculations are consistent with the experimental data. Within the fitted model parameters, we have also estimated the charge radius of the charmed $\Lambda_c^+$ baryon.

show abstract

Section: λ−mentioning

confidence: 84%

Section: λ−mentioning

confidence: 94%

Section: λ−mentioning

confidence: 99%

“…𝑐 reaction by the BESIII Collaboration. [21] Table Based on the above discussions, we take 𝜓(4500), 𝜓(4660), 𝜓(4790), and 𝜓(4900) into account in this work.…”

Section: λ−mentioning

confidence: 99%

Section: λ−mentioning

confidence: 99%

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e+e−→Λc+Λ¯c− Cross Sections and the Λc+ Electromagnetic Form Factors within the Extended Vector Meson Dominance Model

Chen 陈,

Yan 闫,

Xie 谢

2024

Chinese Phys. Lett.

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Measurement of e+e− → ωπ+π− cross section at $$ \sqrt{s} $$ = 2.000 to 3.080 GeV

Ablikim

Ачасов

Adlarson

et al. 2023

J. High Energ. Phys.

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A partial wave analysis on the process e+e− → ωπ+π− is performed using 647 pb−1 of data sample collected by using the BESIII detector operating at the BEPCII storage ring at center-of-mass (c.m.) energies from 2.000 GeV to 3.080 GeV. The Born cross section of the e+e− → ωπ+π− process is measured, with precision improved by a factor of 3 compared to that of previous studies. A structure near 2.25 GeV is observed in the energy-dependent cross sections of e+e− → ωπ+π− and ωπ0π0 with a statistical significance of 7.6σ, and its determined mass and width are 2232 ± 19 ± 27 MeV/c2 and 93 ± 53 ± 20 MeV, respectively, where the first and second uncertainties are statistical and systematic, respectively. By analyzing the cross sections of subprocesses e+e− → ωf0(500), ωf0(980), ωf0(1370), ωf2(1270), and b1(1235)π, a structure, with mass M = 2200 ± 11 ± 17 MeV/c2 and width Γ = 74 ± 20 ± 24 MeV, is observed with a combined statistical significance of 7.9σ. The measured resonance parameters will help to reveal the nature of vector states around 2.25 GeV.

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Measurement of the branching fractions of the singly Cabibbo-suppressed decays $$ {\Lambda}_{\textrm{c}}^{+}\to \textrm{p}\eta $$ and $$ {\Lambda}_{\textrm{c}}^{+}\to \textrm{p}\omega $$

Ablikim,

Achasov,

Adlarson

et al. 2023

J. High Energ. Phys.

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Based on 4.5 fb−1e+e− collision data collected with BESIII detector at seven energy points between 4.600 and 4.699 GeV, the branching fractions for $$ {\Lambda}_c^{+}\to p\eta $$ Λ c + → pη and $$ {\Lambda}_c^{+}\to p\omega $$ Λ c + → pω were measured by means of single-tag method. The branching fractions of $$ {\Lambda}_c^{+}\to p\eta $$ Λ c + → pη and $$ {\Lambda}_c^{+}\to p\omega $$ Λ c + → pω are determined to be (1.57 ± 0.11stat± 0.04syst) × 10−3 and (1.11 ± 0.20stat± 0.07syst) × 10−3, with a statistical significance of greater than 10σ and 5.7σ, respectively. These results are consistent with the previous measurements by BESIII, LHCb and Belle, and the result of $$ {\Lambda}_c^{+}\to p\eta $$ Λ c + → pη is the most precise to date.

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Measurement of Energy-Dependent Pair-Production Cross Section and Electromagnetic Form Factors of a Charmed Baryon

Cited by 18 publications

References 56 publications

e+e−→Λc+Λ¯c− Cross Sections and the Λc+ Electromagnetic Form Factors within the Extended Vector Meson Dominance Model

e+e−→Λc+Λ¯c− Cross Sections and the Λc+ Electromagnetic Form Factors within the Extended Vector Meson Dominance Model

Measurement of e+e− → ωπ+π− cross section at $$ \sqrt{s} $$ = 2.000 to 3.080 GeV

Measurement of the branching fractions of the singly Cabibbo-suppressed decays $$ {\Lambda}_{\textrm{c}}^{+}\to \textrm{p}\eta $$ and $$ {\Lambda}_{\textrm{c}}^{+}\to \textrm{p}\omega $$

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