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Title: Search for mixing-induced C P violation using partial reconstruction of B ¯ 0 D * + X - ν ¯ and kaon tagging

We describe in detail a previously published measurement of CP violation in B 0-B¯ 0 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 B¯ 0→D* +-ν ¯ 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 ACP=(N(B0B0)-N(B¯ 00))/(N(B 0B 0)+N(B¯ 00))=(0.06±0.17 +0.38 -0.32)% corresponding to Δ CP=1-|q/p|=(0.29±0.84 +1.88 -1.61)×10 -3. This measurement is consistent and competitive with those obtained at the B factories with dilepton events.
Publication Date:
OSTI Identifier:
Report Number(s):
Journal ID: ISSN 2470-0010; arXiv:1506.00234
DOE Contract Number:
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review D; Journal Volume: 93
American Physical Society (APS)
Research Org:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Orgs:
BABAR Collaboration
Country of Publication:
United States