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Search for B+ -> K+nu(nu)over-bar Decays Using an Inclusive Tagging Method at Belle H

Authors
Abudinen, F.Adachi, IAdamczyk, K.Ahlburg, P.Aihara, H.Akopov, N.Aloisio, A.Ky, N. AnhAsner, D. M.Atmacan, H.Aushev, T.Aushev, VBaur, A.Babu, VBaehr, S.Bambade, P.Banerjee, SwBansal, S.Baudot, J.Becker, J.Behera, P. K.Bennett, J., VBernieri, E.Bernlochner, F. U.Bertemes, M.Bertholet, E.Bessner, M.Bettarini, S.Bianchi, F.Bilka, T.Biswas, D.Bozek, A.Bracko, M.Branchini, P.Braun, N.Browder, T. E.Budano, A.Bussino, S.Campajola, M.Cao, L.Casarosa, G.Cecchi, C.Cervenkov, D.Chang, P.Cheaib, R.Chekelian, VChen, C.Chen, Y-TCheon, B. G.Chilikin, K.Chirapatpimol, K.Cho, K.Cho, S-JChoudhury, S.Cinabro, D.Corona, L.Cremaldi, L. M.Cunliffe, S.Czank, T.Dattola, F.De La Cruz-Burelo, E.de Marino, G.De Nardo, G.De Nuccio, M.De Pietro, G.de Sangro, R.Destefanis, M.Dey, S.De Yta-Hernandez, A.Di Canto, A.Di Capua, F.Dingfelder, J.Dolezal, Z.Dominguez Jimenez, IDong, T., VDort, K.Dubey, S.Duell, S.Dujany, G.Eidelman, S.Eliachevitch, M.Epifanov, D.Ferber, T.Ferlewicz, D.Fillinger, T.Finocchiaro, G.Fiore, S.Fodor, A.Forti, F.Frey, A.Fulsom, B. G.Gabyshev, N.Ganiev, E.Garcia-Hernandez, M.Garmash, A.Gaur, VGaz, A.Gellrich, A.Giordano, R.Giri, A.Glazov, A.Gobbo, B.Godang, R.Goldenzweig, P.Golob, B.Grace, P.Gradl, W.Graziani, E.Greenwald, D.Guan, Y.Gudkova, K.Hadjivasiliou, C.Halder, S.Hara, K.Hartbrich, O.Hayasaka, K.Hayashii, H.Hazra, S.Hearty, C.Heredia de la Cruz, IHernandez Villanueva, M.Hershenhorn, A.Higuchi, T.Hill, E. C.Hirata, H.Hoek, M.Hohmann, M.Hsu, C-LHumair, T.Iijima, T.Inami, K.Inguglia, G.Jabbar, J. IrakkathilIshikawa, A.Itoh, R.Iwasaki, M.Iwasaki, Y.Jackson, P.Jacobs, W. W.Jaffe, D. E.Jin, Y.Joo, C.Junkerkalefeld, H.Kaliyar, A. B.Kandra, J.Kang, K. H.Karl, R.Karyan, G.Kawasaki, T.Ketter, C.Kichimi, H.Kiesling, C.Kim, C-HKim, D. Y.Kim, Y-KKimmel, T. D.Kodys, P.Koga, T.Kohani, S.Konno, T.Korobov, A.Korpar, S.Kovalenko, E.Kraetzschmar, T. M. G.Krinner, F.Krizan, P.Krokovny, P.Kuhr, T.Kumar, J.Kumar, M.Kumar, R.Kumara, K.Kunigo, T.Kurz, S.Kuzmin, A.Kwon, Y-JLacaprara, S.Lai, Y-TLa Licata, C.Lanceri, L.Lange, J. S.Laurenza, M.Lautenbach, K.Le Diberder, F. R.Lee, S. C.Leitl, P.Levit, D.Lewis, P. M.Li, C.Li, L. K.Li, S. X.Li, Y. B.Libby, J.Lieret, K.Liptak, Z.Liu, Q. Y.Liventsev, D.Longo, S.Lozar, A.Lueck, T.Lyu, C.Maggiora, M.Maity, S.Manfredi, R.Manoni, E.Marcello, S.Marinas, C.Martini, A.Masuda, M.Matsuda, T.Matsuoka, K.Matvienko, D.Meier, F.Merola, M.Metzner, F.Milesi, M.Miller, C.Miyabayashi, K.Miyake, H.Mizuk, R.Mohanty, G. B.Moser, H-GMrvar, M.Muller, F. J.Murphy, C.Mussa, R.Nakamura, K. R.Nakao, M.Natkaniec, Z.Natochii, A.Nayak, M.Nazaryan, G.Niebuhr, C.Nisar, N. K.Nishida, S.Nishimura, K.Ogawa, S.Onishchuk, Y.Ono, H.Onuki, Y.Oskin, P.Ozaki, H.Pakhlov, P.Pakhlova, G.Paladino, A.Pang, T.Panta, A.Paoloni, E.Pardi, S.Park, H.Park, S-HPaschen, B.Passeri, A.Pathak, A.Patra, S.Paul, S.Pedlar, T. K.Peruzzi, IPestotnik, R.Piccolo, M.Piilonen, L. E.Podesta-Lerma, P. L. M.Podobnik, T.Pokharel, S.Polat, G.Popov, VPraz, C.Prell, S.Prencipe, E.Prim, M. T.Rad, N.Rados, P.Raiz, S.Remnev, M.Ripp-Baudot, IRitter, M.Rizzo, G.Rizzuto, L. B.Robertson, S. H.Rodriguez Perez, D.Roney, J. M.Rostomyan, A.Rout, N.Russo, G.Sahoo, D.Sanders, D. A.Sandilya, S.Sangal, A.Santelj, L.Sato, Y.Savinov, VScavino, B.Schueler, J.Schwanda, C.Schwartz, A. J.Seddon, R. M.Seino, Y.Selce, A.Senyo, K.Serrano, J.Sevior, M. E.Sfienti, C.Shiu, J-GShwartz, B.Sibidanov, A.Simon, F.Sobie, R. J.Soffer, A.Sokolov, A.Solovieva, E.Spataro, S.Spruck, B.Stefkova, S.Stottler, Z. S.Stroili, R.Sumihama, M.Sumisawa, K.Summers, D. J.Sutcliffe, W.Suzuki, S. Y.Svidras, H.Tabata, M.Takahashi, M.Takizawa, M.Tamponi, U.Tanaka, S.Tanida, K.Tanigawa, H.Taniguchi, N.Taras, P.Tenchini, F.Tonelli, D.Torassa, E.Toutounji, N.Trabelsi, K.Uchida, M.Unno, Y.Uno, K.Uno, S.Urquijo, P.Ushiroda, Y.Usov, Y., VVahsen, S. E.van Tonder, R.Varner, G. S.Varvell, K. E.Vinokurova, A.Vitale, L.Wach, B.Waheed, E.Wakeling, H. M.Abdullah, W. WanWang, M-ZWang, X. L.Warburton, A.Watanuki, S.Webb, J.Welsch, M.Wessel, C.Wiechczynski, J.Windel, H.Xu, X. P.Yabsley, B. D.Yamada, S.Yan, W.Yang, S. B.Ye, H.Yelton, J.Yin, J. H.Yook, Y. M.Yoshihara, K.Yuan, C. Z.Yusa, Y.Zani, L.Zhilich, VZhou, Q. D.Zhou, X. Y.Zhukova, V., I
Issue Date
27-Oct-2021
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW LETTERS, v.127, no.18
Journal Title
PHYSICAL REVIEW LETTERS
Volume
127
Number
18
URI
http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/42173
DOI
10.1103/PhysRevLett.127.181802
ISSN
0031-9007
Abstract
A search for the flavor-changing neutral-current decay B+ -> K+nu(nu) over bar is performed at the Belle II experiment at the SuperKEKB asymmetric energy electron-positron collider. The data sample corresponds to an integrated luminosity of 63 fb(-1) collected at the Upsilon(4S) resonance and a sample of 9 fb(-1) collected at an energy 60 MeV below the resonance. Because the measurable decay signature involves only a single charged kaon, a novel measurement approach is used that exploits not only the properties of the B+ -> K+nu(nu) over bar decay, but also the inclusive properties of the other B meson in the Upsilon(4S) -> B (B) over bar event, to suppress the background from other B meson decays and light-quark pair production. This inclusive tagging approach offers a higher signal efficiency compared to previous searches. No significant signal is observed. An upper limit on the branching fraction of B+ -> K+nu(nu) over bar of 4.1 x 10(-5) is set at the 90% confidence level.
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