Observation of \(e^+e^-\to\omega\chi_{bJ}(1P)\) and search for \(X_b \to \omega\Upsilon(1S)\) at \(\sqrt{s}\) near 10.75 GeV

Observation of \(e^+e^-\to\omega\chi_{bJ}(1P)\) and search for \(X_b \to \omega\Upsilon(1S)\) at \(\sqrt{s}\) near 10.75 GeV

We study the processes \(e^+e^-\to\omega\chi_{bJ}(1P)\) (\(J\) = 0, 1, or 2) using samples at center-of-mass energies \(\sqrt{s}\) = 10.701, 10.745, and 10.805 GeV, corresponding to 1.6, 9.8, and 4.7 fb\(^{-1}\) of integrated luminosity, respectively. These data were collected with the Belle II dete...

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Veröffentlicht in:arXiv.org 2023-01
Hauptverfasser: Aloisio, A, Aushev, V, Bae, H, Bambade, P, Banerjee, Sw, Beaubien, A, Behera, P K, Bernlochner, F U, Bertacchi, V, Bessner, M, Bettarini, S, Bhuyan, B, Bianchi, F, Bolz, A, Borah, J, Bracko, M, Budano, A, Cheema, P, Chilikin, K, H -E Cho, Das, S, S A De La Motte, De Nardo, G, De Nuccio, M, de Sangro, R, Destefanis, M, A Di Canto, Dolezal, Z, Dong, T V, Ferlewicz, D, Fodor, A, Garmash, A, Gaz, A, Gobbo, B, T Gu, Guilliams, J, Hayasaka, K, M Hernandez Villanueva, Hill, E C, Hohmann, M, C -L Hsu, Iwasaki, M, Junkerkalefeld, H, Kaliyar, A B, Kodys, P, Koga, T, Kraetzschmar, T M G, Krizan, P, Kumara, K, Kuzmin, A, Y -J Kwon, Lacaprara, S, Lanceri, L, Lautenbach, K, Leboucher, R, Liventsev, D, Longo, S, Lueck, T, Maiti, R, Martel, L, Masuda, M, Maurya, S K, Merola, M, Metzner, F, Miyabayashi, K, Mrvar, M, Nakao, M, Natkaniec, Z, Nayak, L, Nisar, N K, Ogawa, S, Paul, S, Peschke, R, Pestotnik, R, Piccolo, M, Piilonen, L E, Prim, M T, A Ramirez Morales, Reiter, S, Roney, J M, Russo, G, Sangal, A, Sato, Y, Sfienti, C, Solovieva, E, Spataro, S, Staric, M, Stroili, R, Sutcliffe, W, Suzuki, S Y, Tanida, K, Tanigawa, H, Tonelli, D, Toutounji, N, Uematsu, Y, Vobbilisetti, V, H Ye, Yin, J H, Zhilich, V, Zhukova, V I
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Sprache:eng
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Luminosity
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Zusammenfassung:We study the processes \(e^+e^-\to\omega\chi_{bJ}(1P)\) (\(J\) = 0, 1, or 2) using samples at center-of-mass energies \(\sqrt{s}\) = 10.701, 10.745, and 10.805 GeV, corresponding to 1.6, 9.8, and 4.7 fb\(^{-1}\) of integrated luminosity, respectively. These data were collected with the Belle II detector during special operations of the SuperKEKB collider above the \(\Upsilon(4S)\) resonance. We report the first observation of \(\omega\chi_{bJ}(1P)\) signals at \(\sqrt{s}\) = 10.745 GeV. By combining Belle II data with Belle results at \(\sqrt{s}\) = 10.867 GeV, we find energy dependencies of the Born cross sections for \(e^+e^-\to \omega\chi_{b1,b2}(1P)\) to be consistent with the shape of the \(\Upsilon(10753)\) state. These data indicate that the internal structures of the \(\Upsilon(10753)\) and \(\Upsilon(10860)\) states may differ. Including data at \(\sqrt{s}\) = 10.653 GeV, we also search for the bottomonium equivalent of the \(X(3872)\) state decaying into \(\omega\Upsilon(1S)\). No significant signal is observed for masses between 10.45 and 10.65 GeV/\(c^2\).
ISSN:2331-8422
DOI:10.48550/arxiv.2208.13189