Measurements of CP-violating asymmetries in B⁰ → Ks⁰π⁰ decays

B Aubert; Kelly Ford; Theresa Harrison; Christopher Hawkes; Sian Morgan; Alan Watson

doi:10.1103/PhysRevLett.93.131805

Measurements of CP-violating asymmetries in B⁰ → Ks⁰π⁰ decays

B Aubert
, Kelly Ford
, Theresa Harrison
, Christopher Hawkes
, Sian Morgan
, Alan Watson

Physics and Astronomy

Research output: Contribution to journal › Article

23 Citations (Scopus)

Abstract

We present a measurement of the time-dependent CP-violating (CPV) asymmetries in B0-->K(0)(S)pi(0) decays based on 124x10(6) Upsilon(4S)-->BB decays collected with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC. In a sample containing 122+/-16 signal decays, we obtain the magnitudes of the direct CPV asymmetry CK(0)(S)(pi(0))=0.40(+0.27)(-0.28)+/-0.09 and of the CPV asymmetry in the interference between mixing and decay SK(0)(S)(pi(0))=0.48(+0.38)(-0.47)+/-0.06 where the first error is statistical and the second systematic.

Original language	English
Pages (from-to)	131805
Number of pages	1
Journal	Physical Review Letters
Volume	93
Early online date	1 Sept 2004
DOIs	https://doi.org/10.1103/PhysRevLett.93.131805
Publication status	Published - 1 Sept 2004

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10.1103/PhysRevLett.93.131805

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title = "Measurements of CP-violating asymmetries in B⁰ → Ks⁰π⁰ decays",

abstract = "We present a measurement of the time-dependent CP-violating (CPV) asymmetries in B0-->K(0)(S)pi(0) decays based on 124x10(6) Upsilon(4S)-->BB decays collected with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC. In a sample containing 122+/-16 signal decays, we obtain the magnitudes of the direct CPV asymmetry CK(0)(S)(pi(0))=0.40(+0.27)(-0.28)+/-0.09 and of the CPV asymmetry in the interference between mixing and decay SK(0)(S)(pi(0))=0.48(+0.38)(-0.47)+/-0.06 where the first error is statistical and the second systematic.",

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T1 - Measurements of CP-violating asymmetries in B⁰ → Ks⁰π⁰ decays

AU - Aubert, B

AU - Ford, Kelly

AU - Harrison, Theresa

AU - Hawkes, Christopher

AU - Morgan, Sian

AU - Watson, Alan

PY - 2004/9/1

Y1 - 2004/9/1

N2 - We present a measurement of the time-dependent CP-violating (CPV) asymmetries in B0-->K(0)(S)pi(0) decays based on 124x10(6) Upsilon(4S)-->BB decays collected with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC. In a sample containing 122+/-16 signal decays, we obtain the magnitudes of the direct CPV asymmetry CK(0)(S)(pi(0))=0.40(+0.27)(-0.28)+/-0.09 and of the CPV asymmetry in the interference between mixing and decay SK(0)(S)(pi(0))=0.48(+0.38)(-0.47)+/-0.06 where the first error is statistical and the second systematic.

AB - We present a measurement of the time-dependent CP-violating (CPV) asymmetries in B0-->K(0)(S)pi(0) decays based on 124x10(6) Upsilon(4S)-->BB decays collected with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC. In a sample containing 122+/-16 signal decays, we obtain the magnitudes of the direct CPV asymmetry CK(0)(S)(pi(0))=0.40(+0.27)(-0.28)+/-0.09 and of the CPV asymmetry in the interference between mixing and decay SK(0)(S)(pi(0))=0.48(+0.38)(-0.47)+/-0.06 where the first error is statistical and the second systematic.

U2 - 10.1103/PhysRevLett.93.131805

DO - 10.1103/PhysRevLett.93.131805

M3 - Article

C2 - 15524707

SN - 1079-7114

VL - 93

SP - 131805

JO - Physical Review Letters

JF - Physical Review Letters

ER -

Measurements of CP-violating asymmetries in B⁰ → Ks⁰π⁰ decays

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