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

Abstract

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.

Authors:
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1259231
Report Number(s):
SLAC-PUB-16291
Journal ID: ISSN 2470-0010; arXiv:1506.00234
DOE Contract Number:
AC02-76SF00515
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review D; Journal Volume: 93
Country of Publication:
United States
Language:
English
Subject:
Experiment-HEP,HEPEX

Citation Formats

J. P. Lees. Search for mixing-induced CP violation using partial reconstruction of B¯0→D*+Xℓ-ν¯ℓ and kaon tagging. United States: N. p., 2016. Web. doi:10.1103/PhysRevD.93.032001.
J. P. Lees. Search for mixing-induced CP violation using partial reconstruction of B¯0→D*+Xℓ-ν¯ℓ and kaon tagging. United States. doi:10.1103/PhysRevD.93.032001.
J. P. Lees. 2016. "Search for mixing-induced CP violation using partial reconstruction of B¯0→D*+Xℓ-ν¯ℓ and kaon tagging". United States. doi:10.1103/PhysRevD.93.032001. https://www.osti.gov/servlets/purl/1259231.
@article{osti_1259231,
title = {Search for mixing-induced CP violation using partial reconstruction of B¯0→D*+Xℓ-ν¯ℓ and kaon tagging},
author = {J. P. Lees},
abstractNote = {We describe in detail a previously published measurement of CP violation in B0-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*+ℓ-νℓ¯ 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¯0B¯0))/(N(B0B0)+N(B¯0B¯0))=(0.06±0.17+0.38-0.32)% corresponding to ΔCP=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.},
doi = {10.1103/PhysRevD.93.032001},
journal = {Physical Review D},
number = ,
volume = 93,
place = {United States},
year = 2016,
month = 6
}