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Measurement of the tau lepton polarization and R(D*) in the decay (B)over-bar -> D*tau(-)(nu)over-bar(tau) with one-prong hadronic tau decays at Belleopen accessMeasurement of the τ lepton polarization and R(D*) in the decay B¯→D*τ−ν¯τ with one-prong hadronic τ decays at Belle

Other Titles
Measurement of the τ lepton polarization and R(D*) in the decay B¯→D*τ−ν¯τ with one-prong hadronic τ decays at Belle
Authors
Hirose, S.Iijima, T.Adachi, I.Adamczyk, K.Aihara, H.Al Said, S.Asner, D. M.Atmacan, H.Aushev, T.Ayad, R.Aziz, T.Babu, V.Badhrees, I.Bakich, A. M.Bansal, V.Berger, M.Bhardwaj, V.Bhuyan, B.Biswal, J.Bondar, A.Bozek, A.Bracko, M.Browder, T. E.Cervenkov, D.Chang, M. -C.Chang, P.Chekelian, V.Chen, A.Cheon, Byung GuChilikin, K.Cho, K.Choi, S. -K.Choi, Y.Choudhury, S.Cinabro, D.Czank, T.Dash, N.Di Carlo, S.Dolezal, Z.Dutta, D.Eidelman, S.Fast, J. E.Ferber, T.Fulsom, B. G.Garg, R.Gaur, V.Gabyshev, N.Garmash, A.Gelb, M.Giri, A.Goldenzweig, P.Golob, B.Guan, Y.Guido, E.Haba, J.Hara, K.Hayasaka, K.Hayashii, H.Hedges, M. T.Higuchi, T.Hou, W. -S.Hsu, C. -L.Inami, K.Inguglia, G.Ishikawa, A.Itoh, R.Iwasaki, M.Jaegle, I.Jeon, H. B.Jin, Y.Julius, T.Kang, K. H.Karyan, G.Kawasaki, T.Kim, D. Y.Kim, J. B.Kim, S. H.Kim, Y. J.Kinoshita, K.Kodys, P.Korpar, S.Kotchetkov, D.Krizan, P.Kroeger, R.Krokovny, P.Kuhr, T.Kulasiri, R.Kumar, R.Kuzmin, A.Kwon, Y. -J.Lange, J. S.Lee, I. S.Li, L. K.Li, Y.Gioi, L. LiLibby, J.Liventsev, D.Lubej, M.Matsuda, T.Miyabayashi, K.Miyata, H.Mohanty, G. B.Mohanty, S.Moon, H. K.Mori, T.Mussa, R.Nakamura, K. R.Nakao, M.Nanut, T.Nath, K. J.Natkaniec, Z.Niiyama, M.Nisar, N. K.Nishida, S.Ogawa, S.Okuno, S.Ono, H.Pal, B.Pardi, S.Park, C. W.Park, H.Paul, S.Pestotnik, R.Piilonen, L. E.Popov, V.Ritter, M.Rostomyan, A.Rozanska, M.Sakai, Y.Salehi, M.Sandilya, S.Sato, Y.Schneider, O.Schnell, G.Schwanda, C.Schwartz, A. J.Seino, Y.Senyo, K.Sevior, M. E.Shebalin, V.Shibata, T. -A.Shimizu, N.Shiu, J. -G.Simon, F.Sokolov, A.Solovieva, E.Staric, M.Strube, J. F.Stypula, J.Sumihama, M.Sumisawa, K.Sumiyoshi, T.Takizawa, M.Tamponi, U.Tanida, K.Tenchini, F.Trabelsi, K.Uchida, M.Uglov, T.Uno, S.Urquijo, P.Van Hulse, C.Varner, G.Varvell, K. E.Vorobyev, V.Vossen, A.Wang, C. H.Wang, M. -Z.Wang, P.Wang, X. L.Wehle, S.Widmann, E.Won, E.Yamamoto, H.Yamashita, Y.Ye, H.Yuan, C. Z.Yusa, Y.Zakharov, S.Zhang, Z. P.Zhilich, V.Zhukova, V.Zhulanov, V.Zupanc, A.
Issue Date
Jan-2018
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW D, v.97, no.1, pp.1 - 17
Indexed
SCOPUS
Journal Title
PHYSICAL REVIEW D
Volume
97
Number
1
Start Page
1
End Page
17
URI
https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/150753
DOI
10.1103/PhysRevD.97.012004
ISSN
1550-7998
Abstract
With the full data sample of 772 x 10(6) B (B) over bar pairs recorded by the Belle detector at the KEKB electron-positron collider, the decay (B) over bar -> D+ tau(-)(nu) over bar (tau) is studied with the hadronic tau decays tau(-) -> pi(-)nu(tau) and tau(-) -> rho(-)nu(tau). The tau polarization P-tau(D*) in two-body hadronic tau decays is measured, as well as the ratio of the branching fractions R(D*) = B((B) over bar -> D*tau(-) (nu) over bar (tau))/B((B) over bar -> D*l(-) (nu) over bar (l),where l(-) denotes an electron or a muon. Our results, P-tau (D*) = - 0.38 +/- 0.51(stat)(+0.21)(-0.16) (syst) and R(D*) = 0.270 +/- 0.035(stat)(+0.028)(-0.025)(syst), are consistent with the theoretical predictions of the standard model. The polarization values of P-tau(D*) > +0.5 are excluded at the 90% confidence level.
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