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Measurement of the B0→D−π+π−π+ branching fraction
Journal article   Open access   Peer reviewed

Measurement of the B0→D−π+π−π+ branching fraction

D. N Brown, J. P Lees, L Sun, V Poireau, J. G Smith, U Mallik, J Kim, V Tisserand, D. B MacFarlane, J Cochran, …
Physical review. D, Vol.94(9), 091101
11/2016
DOI: 10.1103/PhysRevD.94.091101
url
https://doi.org/10.1103/PhysRevD.94.091101View
Published (Version of record) Open Access

Abstract

Using a sample of (470.9±2.8)×106  B¯B pairs, we measure the decay branching fraction B(B0→D*−π+π−π+)=(7.26±0.11±0.31)×10−3, where the first uncertainty is statistical and the second is systematic. Our measurement will be helpful in studies of lepton universality by measuring B(B0→D*−τ+ντ) using τ+→π+π−π+¯ντ decays, normalized to B(B0→D*−π+π−π+).

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