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

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 772×106 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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