Measurement of CP violation in $B^0 \to D^\mpπ^\pm$ decays

LHCb Collaboration; Bernet, R; Müller, K; Serra, N; Steinkamp, O; Straumann, U; Vollhardt, A; et al

doi:10.1007/JHEP06(2018)084

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Measurement of CP violation in $B^0 \to D^\mpπ^\pm$ decays

LHCb Collaboration; Bernet, R; Müller, K; Serra, N; Steinkamp, O; Straumann, U; Vollhardt, A; et al (2018). Measurement of CP violation in $B^0 \to D^\mpπ^\pm$ decays. Journal of High Energy Physics, 06:084.

Abstract

A measurement of the CP asymmetries S f and Sf¯¯¯ in B0 → D∓π± decays is reported. The decays are reconstructed in a dataset collected with the LHCb experiment in proton-proton collisions at centre-of-mass energies of 7 and 8 TeV and corresponding to an integrated luminosity of 3.0 fb−1. The CP asymmetries are measured to be S f = 0.058 ± 0.020(stat) ± 0.011(syst) and Sf¯¯¯=0.038±0.020(stat)±0.007(syst). These results are in agreement with, and more precise than, previous determinations. They are used to constrain angles of the unitarity triangle, | sin (2β + γ) | and γ, to intervals that are consistent with the current world-average values.

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Item Type:	Journal Article, refereed, original work
Communities & Collections:	07 Faculty of Science > Physics Institute
Dewey Decimal Classification:	530 Physics
Scopus Subject Areas:	Physical Sciences > Nuclear and High Energy Physics
Language:	English
Date:	2018
Deposited On:	06 Mar 2019 16:25
Last Modified:	13 May 2020 22:54
Publisher:	Springer
ISSN:	1029-8479
OA Status:	Gold
Free access at:	Publisher DOI. An embargo period may apply.
Publisher DOI:	https://doi.org/10.1007/JHEP06(2018)084