Search for Mixing-Induced CP Violation Using Partial Reconstruction of B̅⁰ → D*Χℓ^⁻ ν̅_ℓ and Kaon Tagging

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Search for Mixing-Induced CP Violation Using Partial Reconstruction of B̅⁰ → D*Χℓ^⁻ ν̅_ℓ and Kaon Tagging

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Title: Search for Mixing-Induced CP Violation Using Partial Reconstruction of B̅⁰ → D*Χℓ^⁻ ν̅_ℓ and Kaon Tagging
Author(s):
Lees, J. P.;
Poireau, V.;
Tisserand, V.;
Grauges, E.;
Palano, A.;
Eigen, G.;
Stugu, B.;
Lou, Xinchou;
Izen, Joseph M.;
BaBaR Collaboration
Date Created: 2016-02-08
Item Type: Article
Keywords: Show Keywords
Abstract: We describe in detail a previously published measurement of CP violation in B⁰-B̅⁰ oscillations, based on an integrated luminosity of 425.7 fb⁻¹ collected by the BABAR experiment at the PEPII collider. We apply a novel technique to a sample of about 6 million B⁰ → D*⁺ Χℓ⁻ ν̅(ℓ) decays selected with partial reconstruction of the D*⁺ meson. The charged lepton identifies the flavor of one B meson at its decay time, the flavor of the other B is determined by kaon tagging. We determine a CP violating asymmetry A(CP) = (N(B⁰B⁰) - N(B̅⁰B̅⁰)) / (N(B⁰B⁰) + N(B̅⁰B̅⁰))= (0.06 ± 0.17(-0.32)(+0.38))% corresponding to Δ(CP) = 1 - |q/p| = (0.29 ± 0.84(-1.61)(+1.88)) x 10⁻³. This measurement is consistent and competitive with those obtained at the B factories with dilepton events.
ISSN: 2470-0010
Source: Physical Review D
Link to Related Resource: http://dx.doi.org/10.1103/PhysRevD.93.032001
Persistent Link: http://hdl.handle.net/10735.1/5053
Bibliographic Citation: Lees, J. P., V. Poireau, V. Tisserand, E. Grauges, et al. 2016. "Search for mixing-induced CP violation using partial reconstruction of B̅⁰ → D*Χℓ^⁻ ν̅_ℓ and kaon tagging." Physical Review D 93(3), doi: 10.1103/PhysRevD.93.032001
Terms of Use: ©2016 American Physical Society

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