학술논문

Measurement of the branching fractions of $\bar{B}\to D^{(*)} K^- K^{(*)0}_{(S)}$ and $\bar{B}\to D^{(*)}D_s^{-}$ decays at Belle II
Document Type
Working Paper
Author
Belle II CollaborationAdachi, I.Aggarwal, L.Aihara, H.Akopov, N.Aloisio, A.Althubiti, N.Ky, N. AnhAsner, D. M.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. V.Bernlochner, F. U.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. A.Browder, T. E.Budano, A.Bussino, S.Campagna, Q.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.Cui, J. X.Dattola, F.De La Cruz-Burelo, E.De La Motte, S. A.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.Jiménez, I. DomínguezDong, T. V.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. G.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. T.Heidelbach, A.de la Cruz, I. HerediaVillanueva, M. HernándezHiguchi, T.Hoek, M.Hohmann, M.Horak, P.Hsu, C. -L.Humair, T.Iijima, T.Inami, K.Ipsita, N.Ishikawa, A.Itoh, R.Iwasaki, M.Jacobs, W. W.Jaffe, D. E.Jang, E. -J.Jia, S.Jin, Y.Johnson, A.Joo, K. K.Junkerkalefeld, H.Kaliyar, A. B.Kandra, J.Kang, K. H.Kang, S.Karyan, G.Kawasaki, T.Keil, F.Kiesling, C.Kim, C. -H.Kim, D. Y.Kim, K. -H.Kim, Y. -K.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. -J.Lacaprara, S.Lalwani, K.Lam, T.Lange, J. S.Laurenza, M.Lautenbach, K.Leboucher, R.Diberder, F. R. LeLee, M. J.Lemettais, C.Leo, P.Levit, D.Lewis, P. M.Li, L. K.Li, S. X.Li, Y.Li, Y. B.Libby, J.Liptak, Z.Liu, M. H.Liu, Q. Y.Liu, Z. Q.Liventsev, D.Longo, S.Lueck, T.Lyu, C.Ma, Y.Maggiora, M.Maharana, S. P.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. K.McKenna, J. A.Meier, F.Merola, M.Miller, C.Mirra, M.Mitra, S.Miyabayashi, K.Mizuk, R.Mohanty, G. B.Mondal, S.Moneta, S.Moser, H. -G.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. -H.Paschen, B.Passeri, A.Patra, S.Paul, S.Pedlar, T. K.Peschke, R.Pestotnik, R.Piccolo, M.Piilonen, L. E.Angioni, G. PinnaPodesta-Lerma, P. L. M.Podobnik, T.Pokharel, S.Praz, C.Prell, S.Prencipe, E.Prim, M. T.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. M.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. E.Sfienti, C.Shan, W.Sharma, C.Shen, C. P.Shi, X. D.Shillington, T.Shimasaki, T.Shiu, J. -G.Shtol, D.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.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. E.van Tonder, R.Varvell, K. E.Veronesi, M.Vinokurova, A.Vismaya, V. S.Vitale, L.Vobbilisetti, V.Volpe, R.Vossen, A.Wach, B.Wakai, M.Wallner, S.Wang, E.Wang, M. -Z.Wang, Z.Warburton, A.Watanabe, M.Watanuki, S.Wessel, C.Wiechczynski, J.Won, E.Xu, X. P.Yabsley, B. D.Yamada, S.Yang, S. B.Yelton, J.Yin, J. H.Yook, Y. M.Yoshihara, K.Yuan, C. Z.Zani, L.Zeng, F.Zhang, B.Zhilich, V.Zhou, J. S.Zhou, Q. D.Zhukova, V. I.Žlebčík, R.
Source
Subject
High Energy Physics - Experiment
Language
Abstract
We present measurements of the branching fractions of eight $\overline B{}^0\to D^{(*)+} K^- K^{(*)0}_{(S)}$, $B^{-}\to D^{(*)0} K^- K^{(*)0}_{(S)}$ decay channels. The results are based on data from SuperKEKB electron-positron collisions at the $\Upsilon(4S)$ resonance collected with the Belle II detector, corresponding to an integrated luminosity of $362~\text{fb}^{-1}$. The event yields are extracted from fits to the distributions of the difference between expected and observed $B$ meson energy, and are efficiency-corrected as a function of $m(K^-K^{(*)0}_{(S)})$ and $m(D^{(*)}K^{(*)0}_{(S)})$ in order to avoid dependence on the decay model. These results include the first observation of $\overline B{}^0\to D^+K^-K_S^0$, $B^-\to D^{*0}K^-K_S^0$, and $\overline B{}^0\to D^{*+}K^-K_S^0$ 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 the $K^- K^{(*)0}_{(S)}$ systems are compatible with quasi-two-body decays via a resonant transition with spin-parity $J^P=1^-$ for the $K^-K_S^0$ systems and $J^P= 1^+$ for the $K^-K^{*0}$ systems. We also present measurements of the branching fractions of four $\overline B{}^0\to D^{(*)+} D_s^-$, $B^{-}\to D^{(*)0} D_s^- $ decay channels with a precision compatible to the current world averages.
Comment: Prepared for submission to JHEP. 34 pages, 14 figures