Measurement of the e + e − → π + π − π 0 cross section in the energy range 0.62–3.50 GeV at Belle II

Adachi, I.; Aggarwal, L.; Aihara, H.; Akopov, N.; Aloisio, A.; Anh Ky, N.; Asner, D. M.; Atmacan, H.; Aushev, V.; Aversano, M.; Ayad, R.; Babu, V.; Bae, H.; Bahinipati, S.; Bambade, P.; Banerjee, Sw.; Bansal, S.; Barrett, M.; Baudot, J.; Baur, A.; Beaubien, A.; Becherer, F.; Becker, J.; Bennett, J. V.; Bernlochner, F. U.; Bertacchi, V.; Bertemes, M.; Bertholet, E.; Bessner, M.; Bettarini, S.; Bianchi, F.; Bilka, T.; Biswas, D.; Bobrov, A.; Bodrov, D.; Bolz, A.; Bondar, A.; Bozek, A.; Bračko, M.; Branchini, P.; Browder, T. E.; Budano, A.; Bussino, S.; Campajola, M.; Cao, L.; Casarosa, G.; Cecchi, C.; Cerasoli, J.; Chang, M. -C.; Chang, P.; Cheema, P.; Cheon, B. G.; Chilikin, K.; Chirapatpimol, K.; Cho, H. -E.; Cho, K.; Cho, S. -J.; Choi, S. -K.; Choudhury, S.; Corona, L.; Dattola, F.; De La Cruz-Burelo, E.; De La Motte, S. A.; de Marino, G.; De Nardo, G.; De Pietro, G.; de Sangro, R.; Destefanis, M.; Dey, S.; Dhamija, R.; Di Canto, A.; Di Capua, F.; Dingfelder, J.; Doležal, Z.; Dong, T. V.; Dorigo, M.; Dort, K.; Dreyer, S.; Dubey, S.; Dugic, K.; Dujany, G.; Ecker, P.; Epifanov, D.; Feichtinger, P.; Ferber, T.; Ferlewicz, D.; Fillinger, T.; Finck, C.; Finocchiaro, G.; Fodor, A.; Forti, F.; Fulsom, B. G.; Gabrielli, A.; Ganiev, E.; Garcia-Hernandez, M.; Gaudino, G.; Gaur, V.; Gaz, A.; Gellrich, A.; Ghosh, D.; Ghumaryan, H.; Giakoustidis, G.; Giordano, R.; Giri, A.; Glazov, A.; Gobbo, B.; Godang, R.; Gogota, O.; Goldenzweig, P.; Gradl, W.; Granderath, S.; Graziani, E.; Greenwald, D.; Gruberová, Z.; Gu, T.; Guan, Y.; Gudkova, K.; Hara, K.; Hayasaka, K.; Hayashii, H.; Hazra, S.; Hearty, C.; Hedges, M. T.; Heidelbach, A.; Heredia de la Cruz, I.; Hernández Villanueva, M.; Higuchi, T.; Hoek, M.; Hohmann, M.; Horak, P.; Hsu, C. -L.; Iijima, T.; Inami, K.; Ipsita, N.; Ishikawa, A.; Itoh, R.; Iwasaki, M.; Jacobs, W. W.; Jang, E. -J.; Ji, Q. P.; Jia, S.; Jin, Y.; Junkerkalefeld, H.; Kaleta, M.; Kalita, D.; Kaliyar, A. B.; Kandra, J.; Kang, S.; Karyan, G.; Kawasaki, T.; Keil, F.; Kiesling, C.; Kim, C. -H.; Kim, D. Y.; Kim, K. -H.; Kim, Y. -K.; Kinoshita, K.; Kodyš, P.; Koga, T.; Kohani, S.; Kojima, K.; Korobov, A.; Korpar, S.; Kovalenko, E.; Kowalewski, R.; Kraetzschmar, T. M. G.; Križan, P.; Krokovny, P.; Kuhr, T.; Kulii, Y.; Kumar, J.; Kumara, K.; Kunigo, T.; Kuzmin, A.; Kwon, Y. -J.; Lacaprara, S.; Lalwani, K.; Lam, T.; Lanceri, L.; Lange, J. S.; Laurenza, M.; Lautenbach, K.; Leboucher, R.; Le Diberder, F. R.; Lee, M. J.; Leo, P.; Levit, D.; Li, L. K.; Li, Y.; Libby, J.; Liu, Q. Y.; Liu, Y.; Liu, Z. Q.; Liventsev, D.; Longo, S.; Lueck, T.; Lyu, C.; Maggiora, M.; Maharana, S. P.; Maiti, R.; Maity, S.; Mancinelli, G.; Manfredi, R.; Manoni, E.; Mantovano, M.; Marcantonio, D.; Marinas, C.; Martellini, C.; Martens, A.; Martinov, T.; Massaccesi, L.; Masuda, M.; Matsuoka, K.; Matvienko, D.; Maurya, S. K.; Mawas, F.; McKenna, J. A.; Mehta, R.; Meier, F.; Merola, M.; Miller, C.; Mirra, M.; Mitra, S.; Miyabayashi, K.; Mohanty, G. B.; Moneta, S.; Moser, H. -G.; Mussa, R.; Nakamura, I.; Nakamura, K. R.; Nakao, M.; Nakazawa, Y.; Narimani Charan, A.; Naruki, M.; Natkaniec, Z.; Natochii, A.; Nayak, L.; Nayak, M.; Nazaryan, G.; Neu, M.; Niebuhr, C.; Ninkovic, J.; Nishida, S.; Novosel, A.; Ogawa, S.; Onishchuk, Y.; Ono, H.; Pakhlov, P.; Pakhlova, G.; Pardi, S.; Park, S. -H.; Paschen, B.; Passeri, A.; Patra, S.; Pedlar, T. K.; Peschke, R.; Pestotnik, R.; Piilonen, L. E.; Pinna Angioni, G.; Podobnik, T.; Pokharel, S.; Praz, C.; Prell, S.; Prencipe, E.; Prim, M. T.; Prudiiev, I.; Purwar, H.; Rados, P.; Raeuber, G.; Raiz, S.; Rauls, N.; Reif, M.; Reiter, S.; Ripp-Baudot, I.; Rizzo, G.; Roney, J. M.; Rostomyan, A.; Rout, N.; Sanders, D. A.; Sandilya, S.; Santelj, L.; Sato, Y.; Scavino, B.; Schwanda, C.; Schwartz, A. J.; Seino, Y.; Selce, A.; Senyo, K.; Sevior, M. E.; Sfienti, C.; Shan, W.; Shi, X. D.; Shillington, T.; Shiu, J. -G.; Shtol, D.; Shwartz, B.; Sibidanov, A.; Simon, F.; Singh, J. B.; Skorupa, J.; Sobie, R. J.; Sobotzik, M.; Soffer, A.; Sokolov, A.; Solovieva, E.; Spataro, S.; Spruck, B.; Starič, M.; Stavroulakis, P.; Stefkova, S.; Stroili, R.; Sue, Y.; Sumihama, M.; Sumisawa, K.; Suwonjandee, N.; Svidras, H.; Takizawa, M.; Tamponi, U.; Tanida, K.; Tenchini, F.; Tittel, O.; Tiwary, R.; Tonelli, D.; Torassa, E.; Trabelsi, K.; Tsaklidis, I.; Ueda, I.; Uematsu, Y.; Uglov, T.; Unger, K.; Unno, Y.; Uno, K.; Uno, S.; Ushiroda, Y.; Vahsen, S. E.; van Tonder, R.; Varvell, K. E.; Veronesi, M.; Vinokurova, A.; Vitale, L.; Vossen, A.; Wallner, S.; Wang, E.; Wang, M. -Z.; Warburton, A.; Watanabe, M.; Watanuki, S.; Wessel, C.; Xu, X. P.; Yabsley, B. D.; Yamada, S.; Yan, W.; Yang, S. B.; Yin, J. H.; Yoshihara, K.; Yuan, C. Z.; Zani, L.; Zeng, F.; Zhang, B.; Zhang, Y.; Zhilich, V.; Zhou, Q. D.; Zhukova, V. I.; Žlebčík, R.

doi:10.1103/PhysRevD.110.112005

Title: Measurement of the $e^{+} e^{-} \to π^{+} π^{-} π^{0}$ cross section in the energy range 0.62–3.50 GeV at Belle II

Journal Article · 03 December 2024 · Physical Review. D.

DOI: https://doi.org/10.1103/PhysRevD.110.112005 · OSTI ID:2479801

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We report a measurement of the $e^{+} e^{-} \to π^{+} π^{-} π^{0}$ cross section in the energy range from 0.62 to 3.50 GeV using an initial-state radiation technique. We use an $e^{+} e^{-}$ data sample corresponding to $191 {fb}^{- 1}$ of integrated luminosity, collected at a center-of-mass energy at or near the $ϒ (4 S)$ resonance with the Belle II detector at the SuperKEKB collider. Signal yields are extracted by fitting the two-photon mass distribution in $e^{+} e^{-} \to π^{+} π^{-} π^{0} γ$ events, which involve a $π^{0} \to γ γ$ decay and an energetic photon radiated from the initial state. Signal efficiency corrections with an accuracy of 1.6% are obtained from several control data samples. The uncertainty on the cross section at the $ω$ and $ϕ$ resonances is dominated by the systematic uncertainty of 2.2%. The resulting cross sections in the 0.62–1.80 GeV energy range yield $a_{μ}^{3 π} = [48.91 \pm 0.23 (stat) \pm 1.07 (syst)] \times 10^{- 10}$ for the leading-order hadronic vacuum polarization contribution to the muon anomalous magnetic moment. This result differs by 2.5 standard deviations from the most precise current determination. Published by the American Physical Society 2024

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Sponsoring Organization:: USDOE

Grant/Contract Number:: AC06-76RL01830

OSTI ID:: 2479801

Journal Information:: Physical Review. D., Journal Name: Physical Review. D. Journal Issue: 11 Vol. 110; ISSN PRVDAQ; ISSN 2470-0010

Publisher:: American Physical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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