Measurement of the branching fractions of $$$$ \overline{B} $$$$ → D(*)K−$$$$ {K}_{(S)}^{\left(\ast \right)0} $$$$ and $$$$ \overline{B} $$$$ → D(*)$$$$ {D}_s^{-} $$$$ decays at Belle II

Journal Article · Thu Aug 01 00:00:00 EDT 2024 · Journal of High Energy Physics (Online)

DOI:https://doi.org/10.1007/jhep08(2024)206· OSTI ID:2576121

Adachi, I.; Aggarwal, L.; Aihara, H.; Akopov, N.; Aloisio, A.; Althubiti, N.; Anh Ky, N.; Asner, D.; Atmacan, H.; Aushev, T.; 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.; Bernlochner, F.; Bertacchi, V.; Bertemes, M.; Bertholet, E.; Bessner, M.; Bettarini, S.; Bhuyan, B.; Bianchi, F.; Bierwirth, L.; Bilka, T.; Biswas, D.; Bobrov, A.; Bodrov, D.; Bolz, A.; Boschetti, A.; Bozek, A.; Bračko, M.; Branchini, P.; Briere, R.; Browder, T.; Budano, A.; Bussino, S.; Campagna, Q.; Campajola, M.; Cao, L.; Casarosa, G.; Cecchi, C.; Cerasoli, J.; Chang, M.; Chang, P.; Cheema, P.; Cheon, B.; Chilikin, K.; Chirapatpimol, K.; Cho, H.; Cho, K.; Cho, S.; Choi, S.; Choudhury, S.; Corona, L.; Cui, J.; Dattola, F.; De La Cruz-Burelo, E.; De La Motte, S.; de Marino, G.; De Nardo, G.; De Nuccio, M.; De Pietro, G.; de Sangro, R.; Destefanis, M.; Dey, S.; Dhamija, R.; Di Canto, A.; Di Capua, F.; Dingfelder, J.; Doležal, Z.; Domínguez Jiménez, I.; Dong, T.; Dorigo, M.; Dorner, D.; Dort, K.; Dossett, D.; Dreyer, S.; Dubey, S.; Dugic, K.; Dujany, G.; Ecker, P.; Eliachevitch, M.; Epifanov, D.; Feichtinger, P.; Ferber, T.; Fillinger, T.; Finck, C.; Finocchiaro, G.; Fodor, A.; Forti, F.; Frey, A.; Fulsom, B.; Garcia-Hernandez, M.; Garg, R.; Gaudino, G.; Gaur, V.; Gaz, A.; Gellrich, A.; Ghevondyan, G.; Ghosh, D.; Ghumaryan, H.; Giakoustidis, G.; Giordano, R.; Giri, A.; Glazov, A.; Gobbo, B.; Godang, R.; Gogota, O.; Goldenzweig, P.; Gradl, W.; Graziani, E.; Greenwald, D.; Gruberová, Z.; Gu, T.; Gudkova, K.; Haide, I.; Halder, S.; Han, Y.; Hara, T.; Harris, C.; Hayasaka, K.; Hayashii, H.; Hazra, S.; Hearty, C.; Hedges, M.; Heidelbach, A.; Heredia de la Cruz, I.; Hernández Villanueva, M.; Higuchi, T.; Hoek, M.; Hohmann, M.; Horak, P.; Hsu, C.; Humair, T.; Iijima, T.; Inami, K.; Ipsita, N.; Ishikawa, A.; Itoh, R.; Iwasaki, M.; Jacobs, W.; Jaffe, D.; Jang, E.; Jia, S.; Jin, Y.; Johnson, A.; Joo, K.; Junkerkalefeld, H.; Kaliyar, A.; Kandra, J.; Kang, K.; Kang, S.; Karyan, G.; Kawasaki, T.; Keil, F.; Kiesling, C.; Kim, C.; Kim, D.; Kim, K.; Kim, Y.; Kindo, H.; Kinoshita, K.; Kodyš, P.; Koga, T.; Kohani, S.; Kojima, K.; Konno, T.; Korobov, A.; Korpar, S.; Kovalenko, E.; Kowalewski, R.; Križan, P.; Krokovny, P.; Kuhr, T.; Kulii, Y.; Kumar, J.; Kumar, M.; Kumar, R.; Kumara, K.; Kunigo, T.; Kuzmin, A.; Kwon, Y.; Lacaprara, S.; Lalwani, K.; Lam, T.; Lange, J.; Laurenza, M.; Lautenbach, K.; Leboucher, R.; Le Diberder, F.; Lee, M.; Lemettais, C.; Leo, P.; Levit, D.; Lewis, P.; Li, L.; Li, S.; Li, Y.; Li, Y.; Libby, J.; Liptak, Z.; Liu, M.; Liu, Q.; Liu, Z.; Liventsev, D.; Longo, S.; Lueck, T.; Lyu, C.; Ma, Y.; Maggiora, M.; Maharana, S.; Maiti, R.; Maity, S.; Mancinelli, G.; Manfredi, R.; Manoni, E.; Mantovano, M.; Marcantonio, D.; Marcello, S.; Marinas, C.; Martellini, C.; Martens, A.; Martini, A.; Martinov, T.; Massaccesi, L.; Masuda, M.; Matsuoka, K.; Matvienko, D.; Maurya, S.; McKenna, J.; Meier, F.; Merola, M.; Miller, C.; Mirra, M.; Mitra, S.; Miyabayashi, K.; Mizuk, R.; Mohanty, G.; Mondal, S.; Moneta, S.; Moser, H.; Mrvar, M.; Mussa, R.; Nakamura, I.; Nakao, M.; Nakazawa, Y.; Naruki, M.; Narwal, D.; Natkaniec, Z.; Natochii, A.; Nayak, L.; Nayak, M.; Nazaryan, G.; Neu, M.; Niiyama, M.; Nishida, S.; Ogawa, S.; Onishchuk, Y.; Ono, H.; Pakhlova, G.; Pardi, S.; Parham, K.; Park, H.; Park, J.; Park, S.; Paschen, B.; Passeri, A.; Patra, S.; Paul, S.; Pedlar, T.; Peschke, R.; Pestotnik, R.; Piccolo, M.; Piilonen, L.; Pinna Angioni, G.; Podesta-Lerma, P.; Podobnik, T.; Pokharel, S.; Praz, C.; Prell, S.; Prencipe, E.; Prim, M.; Purwar, H.; Rados, P.; Raeuber, G.; Raiz, S.; Rauls, N.; Reif, M.; Reiter, S.; Remnev, M.; Reuter, L.; Ripp-Baudot, I.; Rizzo, G.; Roehrken, M.; Roney, J.; Rostomyan, A.; Rout, N.; Sandilya, S.; Santelj, L.; Sato, Y.; Savinov, V.; Scavino, B.; Schmitt, C.; Schneider, S.; Schnepf, M.; Schwanda, C.; Seino, Y.; Selce, A.; Senyo, K.; Serrano, J.; Sevior, M.; Sfienti, C.; Shan, W.; Sharma, C.; Shen, C.; Shi, X.; Shillington, T.; Shimasaki, T.; Shiu, J.; Shtol, D.; Sibidanov, A.; Simon, F.; Singh, J.; Skorupa, J.; Sobie, R.; Sobotzik, M.; Soffer, A.; Sokolov, A.; Solovieva, E.; Spataro, S.; Spruck, B.; Starič, M.; Stavroulakis, P.; Stefkova, S.; Stroili, R.; Sumihama, M.; Svidras, H.; Takizawa, M.; Tamponi, U.; Tanaka, S.; Tanida, K.; Tenchini, F.; Thaller, A.; Tittel, O.; Tiwary, R.; Tonelli, D.; Torassa, E.; Trabelsi, K.; Ueda, I.; Uglov, T.; Unger, K.; Unno, Y.; Uno, K.; Uno, S.; Ushiroda, Y.; Vahsen, S.; van Tonder, R.; Varvell, K.; Veronesi, M.; Vinokurova, A.; Vismaya, V.; Vitale, L.; Vobbilisetti, V.; Volpe, R.; Vossen, A.; Wach, B.; Wakai, M.; Wallner, S.; Wang, E.; Wang, M.; Wang, Z.; Warburton, A.; Watanabe, M.; Watanuki, S.; Wessel, C.; Wiechczynski, J.; Won, E.; Xu, X.; Yabsley, B.; Yamada, S.; Yang, S.; Yelton, J.; Yin, J.; Yook, Y.; Yoshihara, K.; Yuan, C.; Zani, L.; Zeng, F.; Zhang, B.; Zhilich, V.; Zhou, J.; Zhou, Q.; Zhukova, V.; Žlebčík, R.

Abstract

We present measurements of the branching fractions of eight$$$$ {\overline{B}}^0 $$$$ ${\overline{B}}^0$ →D^(*)+K⁻$$$$ {K}_{(S)}^{\left(\ast \right)0} $$$$ $K_{\left(S\right)}^{\left(\ast \right)0}$ ,B⁻→D^(*)0K⁻$$$$ {K}_{(S)}^{\left(\ast \right)0} $$$$ $K_{\left(S\right)}^{\left(\ast \right)0}$ decay channels. The results are based on data from SuperKEKB electron-positron collisions at the Υ(4S) resonance collected with the Belle II detector, corresponding to an integrated luminosity of 362 fb⁻¹. The event yields are extracted from fits to the distributions of the difference between expected and observedBmeson energy, and are efficiency-corrected as a function ofm(K⁻$$$$ {K}_{(S)}^{\left(\ast \right)0} $$$$ $K_{\left(S\right)}^{\left(\ast \right)0}$ ) andm(D^(*)$$$$ {K}_{(S)}^{\left(\ast \right)0} $$$$ $K_{\left(S\right)}^{\left(\ast \right)0}$ ) in order to avoid dependence on the decay model. These results include the first observation of$$$$ {\overline{B}}^0 $$$$ ${\overline{B}}^0$ →D⁺K⁻$$$$ {K}_S^0 $$$$ $K_S^0$ ,B⁻→D*⁰K⁻$$$$ {K}_S^0 $$$$ $K_S^0$ , and$$$$ {\overline{B}}^0 $$$$ ${\overline{B}}^0$ →D*⁺K⁻$$$$ {K}_S^0 $$$$ $K_S^0$ decays and a significant improvement in the precision of the other channels compared to previous measurements. The helicity-angle distributions and the invariant mass distributions of theK⁻$$$$ {K}_{(S)}^{\left(\ast \right)0} $$$$ $K_{\left(S\right)}^{\left(\ast \right)0}$ systems are compatible with quasi-two-body decays via a resonant transition with spin-parityJ^P= 1⁻for theK⁻$$$$ {K}_S^0 $$$$ $K_S^0$ systems andJ^P= 1⁺for theK⁻K*⁰systems. We also present measurements of the branching fractions of four$$$$ {\overline{B}}^0 $$$$ ${\overline{B}}^0$ →D^(*)+$$$$ {D}_s^{-} $$$$ $D_s^{-}$ ,B⁻→D^(*)0$$$$ {D}_s^{-} $$$$ $D_s^{-}$ decay channels with a precision compatible to the current world averages.

• Research Organization: Battelle Memorial Institute, Columbus, OH (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States); Carnegie Mellon Univ., Pittsburgh, PA (United States); Duke Univ., Durham, NC (United States); Univ. of Cincinnati, OH (United States); Univ. of Florida, Gainesville, FL (United States); Univ. of Hawaii, Honolulu, HI (United States); Univ. of Louisville, KY (United States); Univ. of Mississippi, Oxford, MS (United States); Univ. of South Alabama, Mobile, AL (United States); Univ. of South Carolina, Columbia, SC (United States); Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States); Wayne State Univ., Detroit, MI (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• Grant/Contract Number: AC06-76RL01830; SC0007983; SC0009824; SC0009973; SC0010007; SC0010073; SC0010118; SC0010504; SC0011784; SC0012704; SC0019230; SC0021274; SC0021616; SC0022350; SC0023470
• OSTI ID: 2576121
• Journal Information: Journal of High Energy Physics (Online), Journal Name: Journal of High Energy Physics (Online) Journal Issue: 8 Vol. 2024; ISSN 1029-8479
• Publisher: Springer Nature
• Country of Publication: United States
• Language: EN

Related Subjects

Physics