Measurement of the D∗− polarization in the decay B0 → D∗−τ+ντ
A. Abdesselam,I. Adachi,K. Adamczyk,J.K. Ahn,H. Aihara,S. Al Said, K. Arinstein,Y. Arita,D.M. Asner, H. Atmacan, V. Aulchenko,T. Aushev,R. Ayad,T. Aziz, V. Babu,I. Badhrees,S. Bahinipati,A.M. Bakich, Y. Ban,V. Bansal, E. Barberio,M. Barrett,W. Bartel,P. Behera, C. Beleño, K. Belous,M. Berger,F. Bernlochner,D. Besson,V. Bhardwaj,B. Bhuyan, T. Bilka, J. Biswal, T. Bloomfield, A. Bobrov,A. Bondar, G. Bonvicini,A. Bozek, M. Bračko,N. Braun, F. Breibeck, T.E. Browder, M. Campajola,L. Cao,G. Caria, D. Červenkov,M.-C. Chang, P. Chang, Y. Chao,R. Cheaib, V. Chekelian, A. Chen, K.-F. Chen, B.G. Cheon, K. Chilikin, R. Chistov,H.E. Cho,K. Cho,V. Chobanova,S.-K. Choi, Y. Choi, S. Choudhury, D. Cinabro, J. Crnkovic,S. Cunliffe, T. Czank, M. Danilov,N. Dash,S. Di Carlo, J. Dingfelder,Z. Doležal,T.V. Dong, D. Dossett, Z. Drásal, A. Drutskoy,S. Dubey, D. Dutta,S. Eidelman,D. Epifanov,J.E. Fast,M. Feindt,T. Ferber,A. Frey,O. Frost, B.G. Fulsom,R. Garg,V. Gaur, N. Gabyshev, A. Garmash,M. Gelb, J. Gemmler, D. Getzkow,F. Giordano,A. Giri, P. Goldenzweig, B. Golob, D. Greenwald,M.G. Perdekamp, J. Grygier,O. Grzymkowska, Y. Guan,E. Guido,H. Guo, J. Haba, P. Hamer, K. Hara, T. Hara,Y. Hasegawa,J. Hasenbusch, K. Hayasaka,H. Hayashii,X.H. He,M. Heck,M.T. Hedges,D. Heffernan, M. Heider,A. Heller, T. Higuchi,S. Hirose,T. Horiguchi,Y. Hoshi,K. Hoshina,W.-S. Hou,Y.B. Hsiung,C.-L. Hsu, K. Huang, M. Huschle,Y. Igarashi, T. Iijima,M. Imamura,K. Inami,G. Inguglia, A. Ishikawa, K. Itagaki, R. Itoh,M. Iwasaki, Y. Iwasaki,S. Iwata,W.W. Jacobs, I. Jaegle,H.B. Jeon, S. Jia, Y. Jin,D. Joffe,M. Jones,C.W. Joo, K.K. Joo,T. Julius,J. Kahn, H. Kakuno,A.B. Kaliyar,J.H. Kang,K.H. Kang,P. Kapusta,G. Karyan,S.U. Kataoka,E. Kato,Y. Kato,P. Katrenko, H. Kawai, T. Kawasaki,T. Keck, H. Kichimi, C. Kiesling, B.H. Kim,C.H. Kim,D.Y. Kim,H.J. Kim,J.B. Kim,K.T. Kim, S.H. Kim, S.K. Kim,Y.J. Kim, T. Kimmel,H. Kindo,K. Kinoshita, C. Kleinwort, J. Klucar,N. Kobayashi, P. Kodyš,Y. Koga,T. Konno, S. Korpar, D. Kotchetkov,R.T. Kouzes, P. Križan,R. Kroeger, J.-F. Krohn, P. Krokovny,B. Kronenbitter, T. Kuhr, R. Kulasiri, R. Kumar, T. Kumita, E. Kurihara,Y. Kuroki, A. Kuzmin, P. Kvasnička,Y.-J. Kwon, Y.-T. Lai,K. Lalwani, J.S. Lange,I.S. Lee,J.K. Lee, J.Y. Lee, S.C. Lee,M. Leitgab,R. Leitner,D. Levit,P. Lewis, C.H. Li,H. Li,L.K. Li, Y. Li, Y.B. Li,L. Li Gioi, J. Libby, K. Lieret, A. Limosani,Z. Liptak,C. Liu, Y. Liu, D. Liventsev, A. Loos, R. Louvot, P.-C. Lu,M. Lubej,T. Luo,J. MacNaughton,M. Masuda,T. Matsuda,D. Matvienko, J.T. McNeil,M. Merola, F. Metzner,Y. Mikami, K. Miyabayashi,Y. Miyachi,H. Miyake,H. Miyata,Y. Miyazaki, R. Mizuk, G.B. Mohanty,S. Mohanty, H.K. Moon, T.J. Moon,T. Mori,T. Morii, H.-G. Moser,M. Mrvar,T. Müller,N. Muramatsu,R. Mussa, Y. Nagasaka, Y. Nakahama,I. Nakamura, K.R. Nakamura, E. Nakano,H. Nakano,T. Nakano, M. Nakao, H. Nakayama,H. Nakazawa,T. Nanut, K.J. Nath, Z. Natkaniec,M. Nayak, K. Neichi,C. Ng,C. Niebuhr, M. Niiyama,N.K. Nisar, S. Nishida,K. Nishimura,O. 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Sinha,K. Smith,A. Sokolov,Y. Soloviev, E. Solovieva,S. Stanič, M. Starič, M. Steder, Z. Stottler, J.F. Strube,J. Stypula,S. Sugihara,A. Sugiyama, M. Sumihama, K. Sumisawa, T. Sumiyoshi, W. Sutcliffe, K. Suzuki,S. Suzuki,S.Y. Suzuki, Z. Suzuki, H. Takeichi,M. Takizawa,U. Tamponi, M. Tanaka,S. Tanaka, K. Tanida,N. Taniguchi,Y. Tao, G.N. Taylor, F. Tenchini,Y. Teramoto, K. Trabelsi,T. Tsuboyama,M. Uchida,T. Uchida,I. Ueda, S. Uehara,T. Uglov, Y. Unno,S. Uno, P. Urquijo,Y. Ushiroda,Y. Usov,S.E. Vahsen,C. Van Hulse, R. Van Tonder, P. Vanhoefer, G. Varner, K.E. Varvell,K. Vervink, A. Vinokurova,V. Vorobyev,A. Vossen, M.N. Wagner,E. Waheed,B. Wang,C.H. Wang, M.-Z. Wang, P. Wang,X.L. Wang,M. Watanabe,Y. Watanabe,S. Watanuki,R. Wedd, S. Wehle,E. Widmann, J. Wiechczynski, K.M. Williams,E. Won,B.D. Yabsley,S. Yamada, H. Yamamoto, Y. Yamashita, S.B. Yang, S. Yashchenko,H. Ye, J. Yelton, J.H. Yin, Y. Yook,C.Z. Yuan, Y. Yusa,S. Zakharov, C.C. Zhang, J. Zhang,L.M. Zhang, Z.P. Zhang, L. Zhao,V. Zhilich,V. Zhukova, V. Zhulanov,T. Zivko, A. Zupanc,N. Zwahlen
user-5f8411ab4c775e9685ff56d3（2018）
引用 27|浏览13
摘要
We report the first measurement of the D∗− meson polarization in the decay B0 → D∗−τ+ντ using the full data sample of 772×106 BB¯ pairs recorded with the Belle detector at the KEKB electron-positron collider. Our result, FLD∗ = 0.60 ±0.08(stat) ±0.04(sys), where FLD∗ denotes the D∗− meson longitudinal polarization fraction, agrees within about 1.7 standard deviations of the standard model prediction.
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关键词
KEKB,Meson,Polarization (waves),Particle physics,Physics,Detector,Standard deviation,Full data
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