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

Belle Collaboration

Research output: Contribution to conferencePaper

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.

Original languageEnglish
Publication statusPublished - Jan 1 2018
Externally publishedYes
Event10th International Workshop on the CKM Unitarity Triangle, CKM 2018 - Heidelberg, Germany
Duration: Sep 17 2018Sep 21 2018

Conference

Conference10th International Workshop on the CKM Unitarity Triangle, CKM 2018
CountryGermany
CityHeidelberg
Period9/17/189/21/18

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ASJC Scopus subject areas

  • Mathematics (miscellaneous)

Cite this

Belle Collaboration (2018). Measurement of the D∗− polarization in the decay B0 → D∗−τ+ντ. Paper presented at 10th International Workshop on the CKM Unitarity Triangle, CKM 2018, Heidelberg, Germany.