STCF conceptual design report (Volume 1): Physics &amp; detector

Achasov, M.; Ai, X. C.; An, L. P.; Aliberti, R.; An, Q.; Bai, X. Z.; Bai, Y.; Bakina, O.; Barnyakov, A.; Blinov, V.; Bobrovnikov, V.; Bodrov, D.; Bogomyagkov, A.; Bondar, A.; Boyko, I.; Bu, Z. H.; Cai, F. M.; Cai, H.; Cao, J. J.; Cao, Q. H.; Cao, X.; Cao, Z.; Chang, Q.; Chao, K. T.; Chen, D. Y.; Chen, H.; Chen, H. X.; Chen, J. F.; Chen, K.; Chen, L. L.; Chen, P.; Chen, S. L.; Chen, S. M.; Chen, S.; Chen, S. P.; Chen, W.; Chen, X.; Chen, X. F.; Chen, X. R.; Chen, Y.; Chen, Y. Q.; Cheng, H. Y.; Cheng, J.; Cheng, S.; Cheng, T. G.; Dai, J. P.; Dai, L. Y.; Dai, X. C.; Dedovich, D.; Denig, A.; Denisenko, I.; Dias, J. M.; Ding, D. Z.; Dong, L. Y.; Dong, W. H.; Druzhinin, V.; Du, D. S.; Du, Y. J.; Du, Z. G.; Duan, L. M.; Epifanov, D.; Fan, Y. L.; Fang, S. S.; Fang, Z. J.; Fedotovich, G.; Feng, C. Q.; Feng, X.; Feng, Y. T.; Fu, J. L.; Gao, J.; Gao, Y. N.; Ge, P. S.; Geng, C. Q.; Geng, L. S.; Gilman, A.; Gong, L.; Gong, T.; Gou, B.; Gradl, W.; Gu, J. L.; Guevara, A.; Gui, L. C.; Guo, A. Q.; Guo, F. K.; Guo, J. C.; Guo, J.; Guo, Y. P.; Guo, Z. H.; Guskov, A.; Han, K. L.; Han, L.; Han, M.; Hao, X. Q.; He, J. B.; He, S. Q.; He, X. G.; He, Y. L.; He, Z. B.; Heng, Z. X.; Hou, B. L.; Hou, T. J.; Hou, Y. R.; Hu, C. Y.; Hu, H. M.; Hu, K.; Hu, R. J.; Hu, W. H.; Hu, X. H.; Hu, Y. C.; Hua, J.; Huang, G. S.; Huang, J. S.; Huang, M.; Huang, Q. Y.; Huang, W. Q.; Huang, X. T.; Huang, X. J.; Huang, Y. B.; Huang, Y. S.; Hüsken, N.; Ivanov, V.; Ji, Q. P.; Jia, J. J.; Jia, S.; Jia, Z. K.; Jiang, H. B.; Jiang, J.; Jiang, S. Z.; Jiao, J. B.; Jiao, Z.; Jing, H. J.; Kang, X. L.; Kang, X. S.; Ke, B. C.; Kenzie, M.; Khoukaz, A.; Koop, I.; Kravchenko, E.; Kuzmin, A.; Lei, Y.; Levichev, E.; Li, C. H.; Li, C.; Li, D. Y.; Li, F.; Li, G.; Li, G.; Li, H. B.; Li, H.; Li, H. N.; Li, H. J.; Li, H. L.; Li, J. M.; Li, J.; Li, L.; Li, L.; Li, L. Y.; Li, N.; Li, P. R.; Li, R. H.; Li, S.; Li, T.; Li, W. J.; Li, X.; Li, X. H.; Li, X. Q.; Li, X. H.; Li, Y.; Li, Y. Y.; Li, Z. J.; Liang, H.; Liang, J. H.; Liang, Y. T.; Liao, G. R.; Liao, L. Z.; Liao, Y.; Lin, C. X.; Lin, D. X.; Lin, X. S.; Liu, B. J.; Liu, C. W.; Liu, D.; Liu, F.; Liu, G. M.; Liu, H. B.; Liu, J.; Liu, J. J.; Liu, J. B.; Liu, K.; Liu, K. Y.; Liu, K.; Liu, L.; Liu, Q.; Liu, S. B.; Liu, T.; Liu, X.; Liu, Y. W.; Liu, Y.; Liu, Y. L.; Liu, Z. Q.; Liu, Z. Y.; Liu, Z. W.; Logashenko, I.; Long, Y.; Lu, C. G.; Lu, J. X.; Lu, N.; Lü, Q. F.; Lu, Y.; Lu, Y.; Lu, Z.; Lukin, P.; Luo, F. J.; Luo, T.; Luo, X. F.; Lyu, H. J.; Lyu, X. R.; Ma, J. P.; Ma, P.; Ma, Y.; Ma, Y. M.; Maas, F.; Malde, S.; Matvienko, D.; Meng, Z. X.; Mitchell, R.; Nefediev, A.; Nefedov, Y.; Olsen, S. L.; Ouyang, Q.; Pakhlov, P.; Pakhlova, G.; Pan, X.; Pan, Y.; Passemar, E.; Pei, Y. P.; Peng, H. P.; Peng, L.; Peng, X. Y.; Peng, X. J.; Peters, K.; Pivovarov, S.; Pyata, E.; Qi, B. B.; Qi, Y. Q.; Qian, W. B.; Qian, Y.; Qiao, C. F.; Qin, J. J.; Qin, J. J.; Qin, L. Q.; Qin, X. S.; Qiu, T. L.; Rademacker, J.; Redmer, C. F.; Sang, H. Y.; Saur, M.; Shan, W.; Shan, X. Y.; Shang, L. L.; Shao, M.; Shekhtman, L.; Shen, C. P.; Shen, J. M.; Shen, Z. T.; Shi, H. C.; Shi, X. D.; Shwartz, B.; Sokolov, A.; Song, J. J.; Song, W. M.; Song, Y.; Song, Y. X.; Sukharev, A.; Sun, J. F.; Sun, L.; Sun, X. M.; Sun, Y. J.; Sun, Z. P.; Tang, J.; Tang, S. S.; Tang, Z. B.; Tian, C. H.; Tian, J. S.; Tian, Y.; Tikhonov, Y.; Todyshev, K.; Uglov, T.; Vorobyev, V.; Wan, B. D.; Wang, B. L.; Wang, B.; Wang, D. Y.; Wang, G. Y.; Wang, G. L.; Wang, H. L.; Wang, J.; Wang, J. H.; Wang, J. C.; Wang, M. L.; Wang, R.; Wang, R.; Wang, S. B.; Wang, W.; Wang, W. P.; Wang, X. C.; Wang, X. D.; Wang, X. L.; Wang, X. L.; Wang, X. P.; Wang, X. F.; Wang, Y. D.; Wang, Y. P.; Wang, Y. Q.; Wang, Y. L.; Wang, Y. G.; Wang, Z. Y.; Wang, Z. Y.; Wang, Z. L.; Wang, Z. G.; Wei, D. H.; Wei, X. L.; Wei, X. M.; Wen, Q. G.; Wen, X. J.; Wilkinson, G.; Wu, B.; Wu, J. J.; Wu, L.; Wu, P.; Wu, T. W.; Wu, Y. S.; Xia, L.; Xiang, T.; Xiao, C. W.; Xiao, D.; Xiao, M.; Xie, K. P.; Xie, Y. H.; Xing, Y.; Xing, Z. Z.; Xiong, X. N.; Xu, F. R.; Xu, J.; Xu, L. L.; Xu, Q. N.; Xu, X. C.; Xu, X. P.; Xu, Y. C.; Xu, Y. P.; Xu, Y.; Xu, Z. Z.; Xuan, D. W.; Xue, F. F.; Yan, L.; Yan, M. J.; Yan, W. B.; Yan, W. C.; Yan, X. S.; Yang, B. F.; Yang, C.; Yang, H. J.; Yang, H. R.; Yang, H. T.; Yang, J. F.; Yang, S. L.; Yang, Y. D.; Yang, Y. H.; Yang, Y. S.; Yang, Y. L.; Yang, Z. W.; Yang, Z. Y.; Yao, D. L.; Yin, H.; Yin, X. H.; Yokozaki, N.; You, S. Y.; You, Z. Y.; Yu, C. X.; Yu, F. S.; Yu, G. L.; Yu, H. L.; Yu, J. S.; Yu, J. Q.; Yuan, L.; Yuan, X. B.; Yuan, Z. Y.; Yue, Y. F.; Zeng, M.; Zeng, S.; Zhang, A. L.; Zhang, B. W.; Zhang, G. Y.; Zhang, G. Q.; Zhang, H. J.; Zhang, H. B.; Zhang, J. Y.; Zhang, J. L.; Zhang, J.; Zhang, L.; Zhang, L. M.; Zhang, Q. A.; Zhang, R.; Zhang, S. L.; Zhang, T.; Zhang, X.; Zhang, Y.; Zhang, Y. J.; Zhang, Y. X.; Zhang, Y. T.; Zhang, Y. F.; Zhang, Y. C.; Zhang, Y.; Zhang, Y.; Zhang, Y. M.; Zhang, Y. L.; Zhang, Z. H.; Zhang, Z. Y.; Zhang, Z. Y.; Zhao, H. Y.; Zhao, J.; Zhao, L.; Zhao, M. G.; Zhao, Q.; Zhao, R. G.; Zhao, R. P.; Zhao, Y. X.; Zhao, Z. G.; Zhao, Z. X.; Zhemchugov, A.; Zheng, B.; Zheng, L.; Zheng, Q. B.; Zheng, R.; Zheng, Y. H.; Zhong, X. H.; Zhou, H. J.; Zhou, H. Q.; Zhou, H.; Zhou, S. H.; Zhou, X.; Zhou, X. K.; Zhou, X. P.; Zhou, X. R.; Zhou, Y. L.; Zhou, Y.; Zhou, Y. X.; Zhou, Z. Y.; Zhu, J. Y.; Zhu, K.; Zhu, R. D.; Zhu, R. L.; Zhu, S. H.; Zhu, Y. C.; Zhu, Z. A.; Zhukova, V.; Zhulanov, V.; Zou, B. S.; Zuo, Y. B.

doi:10.1007/s11467-023-1333-z

Cited by 42 publications

(7 citation statements)

References 494 publications

Supporting

Mentioning

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Order By: Relevance

“…An improved PWA of the process e + e − → ppπ 0 is highly desirable in order to study the intermediate resonances such as N * or ∆ * coupling to pπ 0 and pπ 0 or 1 − vector states coupling to pp. These improved analyses could be achieved with the much larger data sets expected at the forthcoming advanced super taucharm facilities [30,31].…”

Section: Summary and Discussionmentioning

confidence: 99%

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.

show abstract

Section: Summary and Discussionmentioning

confidence: 99%

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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show abstract

“…The cross sections of e + e − → η ′ ψ(2S) are found to be of the same order of magnitude as those of e + e − → ηψ(2S) [22], while the cross section ratio of e + e − → η ′ J/ψ to e + e − → ηJ/ψ is about 0.1 in the ψ(4230) mass region. Future investigations using data samples with higher luminosity, such as the upgraded BEPCII [43,44] and STCF [45], are necessary to provide further insight.…”

Section: Discussionmentioning

confidence: 99%

Observation of e+e− → ηψ(2S) at center-of-mass energies from 4.236 to 4.600 GeV

Ablikim¹,

Ачасов²,

Adlarson³

et al. 2021

J. High Energ. Phys.

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Using a total of 5.25 fb−1 of e+e− collision data with center-of-mass energies from 4.236 to 4.600 GeV, we report the first observation of the process e+e−→ ηψ(2S) with a statistical significance of 4.9 standard deviations. The data sets were collected by the BESIII detector operating at the BEPCII storage ring. We measure the yield of events integrated over center-of-mass energies and also present the energy dependence of the measured cross section.

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“…The obtained results should facilitate further searches and studies of the 𝑋2 in the experiments at the planned STCF. [77] Employing the principle of detailed balance discussed above, the difference between the production and decay processes for the 𝑋2 lies in the phase space. Consequently, the production of the 𝑋2 can be expressed as the partial width for 𝑋2 → 𝛾 * 𝛾 * → 𝑒 + 𝑒 − multiplied by the appropriate phase-space factor.…”

Section: 𝜌𝜎 and 𝒮mentioning

confidence: 99%

“…[78,79] Then, using the known values of the branching fractions [13] Br[𝜓(2𝑆) → 𝜋 + 𝜋 − 𝐽/𝜓] ≃ (34.68 ± 0.30)%, Br[𝐽/𝜓 → ℓ + ℓ − ] ≃ (11.93 ± 0.07)%, (ℓ = 𝑒, 𝜇), (36) one anticipates that BESIII, working at the center-ofmass energy around 4.014 GeV, can hardly detect directly produced 𝑋2 events in the 𝐽/𝜓𝛾 and 𝜓(2𝑆)𝛾 invariant mass distributions with the 𝐽/𝜓's reconstructed from lepton pairs. In the meantime, given the expected integrated luminosity of the STCF around 1 ab −1 /year, [77] one can expect a considerable amount of approximately 7 pb × 1 ab −1 = 7 × 10 6 directly produced 𝑋2 and, depending on its nature, from 𝒪(10 2 ) to 𝒪(10 3 ) reconstructed events in the 𝐽/𝜓𝛾 or 𝜓(2𝑆)𝛾 invariant mass distributions annually, estimated using the values of the branching fraction Br[𝑋2 → 𝜓𝛾] from Table 2 and those in Eq. (36).…”

Section: 𝜌𝜎 and 𝒮mentioning

confidence: 99%

Production of the X(4014) as the Spin-2 Partner of X(3872) in e ⁺ e ⁻ Collisions

Shi,

Baru,

Guo

et al. 2024

Chinese Phys. Lett.

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In 2021, the Belle Collaboration reported the first observation of a new structure in the $\psi(2S) \gamma$ final state produced in the two-photon fusion process. In the hadronic molecule picture, this new structure can be associated with the shallow isoscalar $D^*\bar{D}^*$ bound state and as such is an excellent candidate for the spin-2 partner of the $X(3872)$ with the quantum numbers $J^{PC}=2^{++}$ conventionally named $X_2$. In this work we evaluate the electronic width of this new state and argue that its nature is sensitive to its total width, the experimental measurement currently available being unable to distinguish between different options. Our estimates demonstrate that the planned Super $\tau$-Charm Facility offers a promising opportunity to search for and study this new state in the invariant mass distributions for the final states $J/\psi\gamma$ and $\psi(2S)\gamma$.

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STCF conceptual design report (Volume 1): Physics & detector

Cited by 42 publications

References 494 publications

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

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

Observation of e+e− → ηψ(2S) at center-of-mass energies from 4.236 to 4.600 GeV

Production of the X(4014) as the Spin-2 Partner of X(3872) in e ⁺ e ⁻ Collisions

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STCF conceptual design report (Volume 1): Physics & detector

Cited by 42 publications

References 494 publications

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

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

Observation of e+e− → ηψ(2S) at center-of-mass energies from 4.236 to 4.600 GeV

Production of the X(4014) as the Spin-2 Partner of X(3872) in e + e − Collisions

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Product

Resources

About

Production of the X(4014) as the Spin-2 Partner of X(3872) in e ⁺ e ⁻ Collisions