Measurement of the D∗− polarization in the decay B0 → D∗−τ+ντ

Belle Collaboration

Measurement of the D^∗− polarization in the decay B⁰ → D^∗−τ⁺ν_τ

Belle Collaboration

University of Tabuk
The Graduate University for Advanced Studies
High Energy Accelerator Research Organization, Tsukuba
H. Niewodniczanski Institute of Nuclear Physics
Korea University
The University of Tokyo
King Abdulaziz University
RAS - Budker Institute of Nuclear Physics
Novosibirsk State University
Nagoya University
Brookhaven National Laboratory
University of South Carolina
Moscow Institute of Physics and Technology
Tata Institute of Fundamental Research
King Abdulaziz City for Science and Technology
Indian Institute of Technology Bhubaneswar
The University of Sydney
Peking University
Pacific Northwest National Laboratory
University of Melbourne
Wayne State University
German Electron Synchrotron
Indian Institute of Technology Madras
University of Göttingen
Institute for High Energy Physics
Austrian Academy of Sciences
University of Bonn
Moscow Engineering Physics Institute
Indian Institute of Science Education and Research Mohali
Indian Institute of Technology Guwahati
Charles University
Jožef Stefan Institute
University of Maribor
Karlsruhe Institute of Technology
University of Hawai'i at Mānoa
National Institute for Nuclear Physics
University of Naples Federico II
Fu Jen Catholic University
National Taiwan University

Research output: Contribution to conference › Paper › peer-review

Abstract

We report the first measurement of the D^∗− meson polarization in the decay B⁰ → D^∗−τ⁺ν_τ using the full data sample of 772×10⁶ BB^¯ pairs recorded with the Belle detector at the KEKB electron-positron collider. Our result, F_L^D∗ = 0.60 ±0.08(stat) ±0.04(sys), where F_L^D∗ denotes the D^∗− meson longitudinal polarization fraction, agrees within about 1.7 standard deviations of the standard model prediction.

Original language	English
State	Published - 2018
Event	10th International Workshop on the CKM Unitarity Triangle, CKM 2018 - Heidelberg, Germany Duration: 17 Sep 2018 → 21 Sep 2018

Conference

Conference	10th International Workshop on the CKM Unitarity Triangle, CKM 2018
Country/Territory	Germany
City	Heidelberg
Period	17/09/18 → 21/09/18

Cite this

@conference{18f06a0aeb524007b440715cfc12be19,

title = "Measurement of the D∗− polarization in the decay B0 → D∗−τ+ντ",

abstract = "We report the first measurement of the D∗− meson polarization in the decay B0 → D∗−τ+ντ using the full data sample of 772{\texttimes}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.",

author = "\{Belle Collaboration\} and A. Abdesselam and I. Adachi and K. Adamczyk and Ahn, \{J. K.\} and H. Aihara and \{Al Said\}, S. and K. Arinstein and Y. Arita and Asner, \{D. M.\} and H. Atmacan and V. Aulchenko and T. Aushev and R. Ayad and T. Aziz and V. Babu and I. Badhrees and S. Bahinipati and Bakich, \{A. M.\} and Y. Ban and V. Bansal and E. Barberio and M. Barrett and W. Bartel and P. Behera and C. Bele{\~n}o and K. Belous and M. Berger and F. Bernlochner and D. Besson and V. Bhardwaj and B. Bhuyan and T. Bilka and J. Biswal and T. Bloomfield and A. Bobrov and A. Bondar and G. Bonvicini and A. Bozek and M. Bra{\v c}ko and N. Braun and F. Breibeck and Browder, \{T. E.\} and M. Campajola and L. Cao and G. Caria and D. {\v C}ervenkov and Chang, \{M. C.\} and P. Chang and Kookhyun Kang and Kim, \{H. J.\}",

note = "Publisher Copyright: {\textcopyright} 2018 Heidelberg University. All rights reserved.; 10th International Workshop on the CKM Unitarity Triangle, CKM 2018 ; Conference date: 17-09-2018 Through 21-09-2018",

year = "2018",

language = "English",

}

TY - CONF

T1 - Measurement of the D∗− polarization in the decay B0 → D∗−τ+ντ

AU - Belle Collaboration

AU - Abdesselam, A.

AU - Adachi, I.

AU - Adamczyk, K.

AU - Ahn, J. K.

AU - Aihara, H.

AU - Al Said, S.

AU - Arinstein, K.

AU - Arita, Y.

AU - Asner, D. M.

AU - Atmacan, H.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Ayad, R.

AU - Aziz, T.

AU - Babu, V.

AU - Badhrees, I.

AU - Bahinipati, S.

AU - Bakich, A. M.

AU - Ban, Y.

AU - Bansal, V.

AU - Barberio, E.

AU - Barrett, M.

AU - Bartel, W.

AU - Behera, P.

AU - Beleño, C.

AU - Belous, K.

AU - Berger, M.

AU - Bernlochner, F.

AU - Besson, D.

AU - Bhardwaj, V.

AU - Bhuyan, B.

AU - Bilka, T.

AU - Biswal, J.

AU - Bloomfield, T.

AU - Bobrov, A.

AU - Bondar, A.

AU - Bonvicini, G.

AU - Bozek, A.

AU - Bračko, M.

AU - Braun, N.

AU - Breibeck, F.

AU - Browder, T. E.

AU - Campajola, M.

AU - Cao, L.

AU - Caria, G.

AU - Červenkov, D.

AU - Chang, M. C.

AU - Chang, P.

AU - Kang, Kookhyun

AU - Kim, H. J.

PY - 2018

Y1 - 2018

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/85083953835

M3 - Paper

AN - SCOPUS:85083953835

T2 - 10th International Workshop on the CKM Unitarity Triangle, CKM 2018

Y2 - 17 September 2018 through 21 September 2018

ER -

Measurement of the D^∗− polarization in the decay B⁰ → D^∗−τ⁺ν_τ

Abstract

Conference

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