Study of $e^{+}e^{-}\to h^{+}h^{-}J/ψ~(h=π,~K,~p)$ via initial-state radiation at Belle~II

Using a data sample of 427.9 fb$^{-1}$ collected by the Belle~II detector at or near the $Υ(4S)$ and $Υ(10753)$ resonances, the cross sections for $e^+e^-\to h^+h^-J/ψ$$(h=π/K/p)$ at center-of-mass energies ranging from 3.8 GeV or the production threshold to 5.5/6.0/7.0 GeV have been measured via initial-state radiation. The cross sections for the processes $e^+e^-\to π^+π^-J/ψ$ and $e^+e^-\to K^+K^-J/ψ$ are consistent with previously published results. The cross sections for these channels obtained by combining with previous Belle results are also given. The process $e^+e^-\to p\bar p J/ψ$ is investigated for the first time. The yields are small and no significant structure is observed in the cross section versus energy. Searches for vector charmonium-like states in the $h^+h^-J/ψ$ systems, and for associated intermediate states in the $h^{\pm} J/ψ$ systems, are also presented.

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Desy publication database (The Deutsches Elektronen-Synchrotron)
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2026-01-01
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Quantum Chromodynamics and Particle Interactions
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article

Study of $e^{+}e^{-}\to h^{+}h^{-}J/ψ~(h=π,~K,~p)$ via initial-state radiation at Belle~II

D. Matvienko, K. Chilikin, T. Shimasaki, X. P. Xu et al.
Desy publication database (The Deutsches Elektronen-Synchrotron)
Quantum Chromodynamics and Particle Interactions
article

Study of $e^{+}e^{-}\to h^{+}h^{-}J/ψ~(h=π,~K,~p)$ via initial-state radiation at Belle~II

D. Matvienko, K. Chilikin, T. Shimasaki, X. P. Xu, O. Tittel, M. J. Lee, A. Kuzmin, G. De Pietro, J. Baudot, M. Takizawa, I. Nakamura, T. Shillington, L. Aggarwal, Z. Liptak, M. E. Sevior, F. R. Le Diberder, D. Marcantonio, W. Z. Li, D. Greenwald, S. K. Maurya, F. Meier, S. E. Vahsen, M. Bračko, A. Thaller, W. C. Yan, S. Patra, M. Garcia-Hernandez, K. Trabelsi, N. Akopov, C. Lyu, S. Spataro, W. Gradl, T. Koga, M. Veronesi, E. Won, S. Reiter, H.-J. Li, D. Liventsev, E. Kovalenko, H. Bae, V. S. Vismaya, A. Gabrielli, J. H. Yin, D. Shtol, A. Frey, E. Ganiev, M. Mantovano, J. Libby, A. Aloisio, Y. P. Liao, X. D. Shi, P. Gironella Gironell, M. Wakai, M. H. Liu, S. P. Maharana, R. Žlebčík, S. Bettarini, K. Ravindran, R. van Tonder, F. Otani, P. L. M. Podesta-Lerma, S. Bussino, Z. Natkaniec, S.-K. Choi, M. Bartl, J. Serrano, D. Ricalde Herrmann, A. I. Bobrov, H. Aihara, M. Marfoli, T. Bilka, K. Parham, M. Barrett, P. Jackson, S. Korpar, I. Tsaklidis, A. Gellrich, A. Rostomyan, M. Merola, B. Spruck, K. Unger, I. Consigny, I. Ripp-Baudot, N. Suwonjandee, Q. M. Li, A. Di Canto, M. Mrvar, S. Saha, M. Destefanis, J. Borah, R. Okubo, G. Dujany, S. Dey, Y. Jin, A. Johnson, D. Biswas, V. Vobbilisetti, R. Itoh, R. Garg, G. Giakoustidis, J. Park, S. Schneider, H. Chetri, D. Bodrov, Y. Seino, M. Masuda, T. Ferber, A. Gaz, E. De La Cruz-Burelo, C. P. Shen, C. Miller, A. Beaubien, N. Anh Ky, D. A. Sanders, N. Althubiti, Y. Han, R. Giordano, A. Lozar, M. Mirra, Y. Kulii, M. Piccolo, F. Becherer, C. Marinas, A. B. Kaliyar, M. Iwasaki, Y. Guan, B. Zhang, P. Horak, S. Alghamdi, Sw. Banerjee, G. Ghevondyan, K. Kojima, V. Bhardwaj, E. Graziani, L. Santelj, T. Kunigo, L. Corona, C. Antonioli, L. Chen, S. Hazra, Q. Campagna, J. M. Roney, P. Branchini, K. E. Varvell, C. Finck, A. Soffer, D. Y. Kim, E. Solovieva, S. A. De La Motte, R. Mizuk, J. A. Colorado-Caicedo, S. Pardi, R. Mehta, S. Wallner, M. Sobotzik, P. Križan, X. T. Hou, P. Kodyš, J. Yelton, M. Sumihama, M. Nakao, G. Finocchiaro, F. Zeng, M. Maggiora, P. Rados, G. Heine, Belle-II Collaboration, S. Kang, L. Vitale, B. G. Cheon, M. Reif, L. Massaccesi, L. Stoetzer, H. Ahmed, K. Kinoshita, C. Ketter, Y. Ahn, B. Scavino, A. Heidelbach, R. Dhayal, A. Sibidanov, T. Lueck, A. Bozek, Z. Q. Liu, K. Uno, C. Santos, S. Marcello, S. Chutia, A. Giri, F. Tenchini, P. Ecker, S. J. Tanaka, M. Alhakami, A. Natochii, A. T. Prakash, S. H. Robertson, H. Ono, K. Amos, R. Maiti, T. K. Pedlar, T. Aushev, K.-H. Kim, S.-J. Cho, S. Uno, J. S. Lange, E. Bertholet, L. Salutari, S. Nishida, H. Purwar, F. Forti, K. Špenko, Q. P. Ji, T. Iijima, O. Gogota, Z. Mediankin Gruberová, F. Bianchi, J. L. Ma, D. Jacobi, I. Haide, M. Starič, Y. Ma, B. D. Yabsley, A. Warburton, M. Hoek, Q. Y. Liu, M. Nayak, T. V. Dong, A. Bondar, J. Lin, W. Shan, M. Maushart, P. Leo, J. Skorupa, K. Miyabayashi, C. Sfienti, J. Eppelt, L. Zani, S. Prell, R. Leboucher, M. Dorigo, F. F. Trantou, D. Epifanov, V. Savinov, K. Sumisawa, J. Kandra, G. De Nardo, A. Panta, V. Bertacchi, C. Cheshta, R. J. Sobie, G. Karyan, S. Stefkova, S. S. Tang, M. Takahashi, L. K. Li, G. Rizzo, K. Schoenning, R. Tiwary, T. E. Browder, S. Jia, R. Farkas, P. Krokovny, P. M. Lewis, K. Yoshihara, H.-G. Moser, M. Watanabe, N. Rout, G. Bonvicini, Y. Ushiroda, P. Stavroulakis, K. Tanida, S. Kohani, C. Lemettais, T. Fillinger, G. Sharma, X. Dong, J. S. Zhou, I. Domínguez Jiménez, E. Manoni, C. Wessel, A. Budano, R. Kowalewski, J. P. Yuan, J. Dingfelder, S. Bahinipati, Z. Doležal, V. Babu, Y. B. Li, K. Yi, F. U. Bernlochner, E.-J. Jang, A. Korobov, J. Becker, T. Martinov, A. Boschetti, A. Baur, H. Kindo, F. Keil, R. Hoppe, Y.-J. Kwon, C. Hearty, A. Sokolov, J. Chin, R. Nomaru, T. Lam, F. Simon, A. Ishikawa, R. A. Briere, S. Watanuki, S. Moneta, M.-C. Chang, I. Heredia de la Cruz, C. Praz, T. Higuchi, C. Schwanda, B. Shwartz, K. Inami, H. Hayashii, M. Campajola, Q. D. Zhou, R. Godang, B. G. Fulsom, S. Choudhury, I. Ueda, R. Mussa, J. A. McKenna, E. Prencipe, M. Bertemes, S. Lacaprara, S. Privalov, P. Pakhlov, M. T. Prim, R. Ayad, M. Schnepf, N. Sushree Ipsita, J. Cochran, P. Bambade, E. Torassa, R. Stroili, H. Atmacan, T. Kuhr, M. Hernández Villanueva, R. Pestotnik, K. Senyo, H. Lee, C. Kiesling, M. Abumusabh, M. Naruki, R. de Sangro, L. E. Piilonen, C. Cecchi, A. Passeri, M. T. Hedges, C. Chen, B. Gobbo, K. H. Kang, J. X. Cui, D. Ghosh, A. Gale, W. W. Jacobs, P. Cheema, N. K. Baghel, T. Humair, Y. Unno, T. S. Lau, P. Goldenzweig, V. Gautam, J. U. Rehman, K. Park, G. Mancinelli, G. Pakhlova, K. Gudkova, H. Murakami, J.-Y. Kim, F. Testa, H. Jin Kim, M. Bessner, P. Urquijo, T. Tien Manh, D Suresh Kumar, P. Feichtinger, P. Chang, M.-Z. Wang, C.-L. Hsu, S.-H. Park, M. Neu, S. Sandilya, T. Podobnik, I. Adachi, S. Ogawa, M. Hohmann, J. V. Bennett, G. Gaudino, R. Volpe, H. Miyake, Y. Nakazawa, K. Chirapatpimol, L. Reuter, H. Ghumaryan, J.-G. Shiu, K. Kumara, U. Tamponi, C. Martellini, V. Gaur, S. Longo, A. Aggarwal, S. Prince Makarios Paul, H.-E. Cho, A. Martens, R. Manfredi, L. Z. Zhu, S. Raiz, G. Casarosa, C. Li, K. Cho, D. Meleshko, C. Z. Yuan, D. M. Asner, V. Zhilich
article en

Abstract

Using a data sample of 427.9 fb$^{-1}$ collected by the Belle~II detector at or near the $Υ(4S)$ and $Υ(10753)$ resonances, the cross sections for $e^+e^-\to h^+h^-J/ψ$$(h=π/K/p)$ at center-of-mass energies ranging from 3.8 GeV or the production threshold to 5.5/6.0/7.0 GeV have been measured via initial-state radiation. The cross sections for the processes $e^+e^-\to π^+π^-J/ψ$ and $e^+e^-\to K^+K^-J/ψ$ are consistent with previously published results. The cross sections for these channels obtained by combining with previous Belle results are also given. The process $e^+e^-\to p\bar p J/ψ$ is investigated for the first time. The yields are small and no significant structure is observed in the cross section versus energy. Searches for vector charmonium-like states in the $h^+h^-J/ψ$ systems, and for associated intermediate states in the $h^{\pm} J/ψ$ systems, are also presented.

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