Limits on the decay-rate difference of neutral B mesons and on CP, T, and CPT violation in B⁰ - B(bar)⁰ oscillations

B Aubert; Kelly Ford; Theresa Harrison; Christopher Hawkes; David Knowles; Sian Morgan; Richard Penny; Alan Watson; Nigel Watson

doi:10.1103/PhysRevLett.92.181801

Limits on the decay-rate difference of neutral B mesons and on CP, T, and CPT violation in B⁰ - B(bar)⁰ oscillations

B Aubert, Kelly Ford, Theresa Harrison, Christopher Hawkes, David Knowles, Sian Morgan, Richard Penny, Alan Watson, Nigel Watson

Physics and Astronomy

Research output: Contribution to journal › Article

27 Citations (Scopus)

Abstract

Using events in which one of two neutral B mesons from the decay of an Upsilon(4S) meson is fully reconstructed, we determine parameters governing decay (DeltaGamma(d)/Gamma(d)), CP, and T violation (|q/p|), and CP and CPT violation (Re z,Im z). The results, obtained from an analysis of 88 x 10(6) Upsilon(4S) decays recorded by BABAR, are sgn(Re lambda(CP))DeltaGamma(d)/Gamma(d)=-0.008+/-0.037(stat)+/-0.018(syst)[-0.084,0.068],|q/p|=1.029+/-0.013(stat)+/-0.011(syst)[1.001,1.057],(Re lambda(CP)/|lambda(CP)|) Re z=0.014+/-0.035(stat)+/-0.034(syst)[-0.072,0.101],Im z=0.038+/-0.029(stat)+/-0.025(syst)[-0.028,0.104]. The values inside the square brackets indicate the 90% confidence-level intervals. These results are consistent with standard model expectations.

Original language	English
Pages (from-to)	181801
Number of pages	1
Journal	Physical Review Letters
Volume	92
Issue number	18
Early online date	1 May 2004
DOIs	https://doi.org/10.1103/PhysRevLett.92.181801
Publication status	Published - 1 May 2004

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@article{ffee14c83ae14303af592e8f580f5790,

title = "Limits on the decay-rate difference of neutral B mesons and on CP, T, and CPT violation in B⁰ - B(bar)⁰ oscillations",

abstract = "Using events in which one of two neutral B mesons from the decay of an Upsilon(4S) meson is fully reconstructed, we determine parameters governing decay (DeltaGamma(d)/Gamma(d)), CP, and T violation (|q/p|), and CP and CPT violation (Re z,Im z). The results, obtained from an analysis of 88 x 10(6) Upsilon(4S) decays recorded by BABAR, are sgn(Re lambda(CP))DeltaGamma(d)/Gamma(d)=-0.008+/-0.037(stat)+/-0.018(syst)[-0.084,0.068],|q/p|=1.029+/-0.013(stat)+/-0.011(syst)[1.001,1.057],(Re lambda(CP)/|lambda(CP)|) Re z=0.014+/-0.035(stat)+/-0.034(syst)[-0.072,0.101],Im z=0.038+/-0.029(stat)+/-0.025(syst)[-0.028,0.104]. The values inside the square brackets indicate the 90% confidence-level intervals. These results are consistent with standard model expectations.",

author = "B Aubert and Kelly Ford and Theresa Harrison and Christopher Hawkes and David Knowles and Sian Morgan and Richard Penny and Alan Watson and Nigel Watson",

year = "2004",

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doi = "10.1103/PhysRevLett.92.181801",

language = "English",

volume = "92",

pages = "181801",

journal = "Physical Review Letters",

issn = "1079-7114",

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TY - JOUR

T1 - Limits on the decay-rate difference of neutral B mesons and on CP, T, and CPT violation in B⁰ - B(bar)⁰ oscillations

AU - Aubert, B

AU - Ford, Kelly

AU - Harrison, Theresa

AU - Hawkes, Christopher

AU - Knowles, David

AU - Morgan, Sian

AU - Penny, Richard

AU - Watson, Alan

AU - Watson, Nigel

PY - 2004/5/1

Y1 - 2004/5/1

N2 - Using events in which one of two neutral B mesons from the decay of an Upsilon(4S) meson is fully reconstructed, we determine parameters governing decay (DeltaGamma(d)/Gamma(d)), CP, and T violation (|q/p|), and CP and CPT violation (Re z,Im z). The results, obtained from an analysis of 88 x 10(6) Upsilon(4S) decays recorded by BABAR, are sgn(Re lambda(CP))DeltaGamma(d)/Gamma(d)=-0.008+/-0.037(stat)+/-0.018(syst)[-0.084,0.068],|q/p|=1.029+/-0.013(stat)+/-0.011(syst)[1.001,1.057],(Re lambda(CP)/|lambda(CP)|) Re z=0.014+/-0.035(stat)+/-0.034(syst)[-0.072,0.101],Im z=0.038+/-0.029(stat)+/-0.025(syst)[-0.028,0.104]. The values inside the square brackets indicate the 90% confidence-level intervals. These results are consistent with standard model expectations.

AB - Using events in which one of two neutral B mesons from the decay of an Upsilon(4S) meson is fully reconstructed, we determine parameters governing decay (DeltaGamma(d)/Gamma(d)), CP, and T violation (|q/p|), and CP and CPT violation (Re z,Im z). The results, obtained from an analysis of 88 x 10(6) Upsilon(4S) decays recorded by BABAR, are sgn(Re lambda(CP))DeltaGamma(d)/Gamma(d)=-0.008+/-0.037(stat)+/-0.018(syst)[-0.084,0.068],|q/p|=1.029+/-0.013(stat)+/-0.011(syst)[1.001,1.057],(Re lambda(CP)/|lambda(CP)|) Re z=0.014+/-0.035(stat)+/-0.034(syst)[-0.072,0.101],Im z=0.038+/-0.029(stat)+/-0.025(syst)[-0.028,0.104]. The values inside the square brackets indicate the 90% confidence-level intervals. These results are consistent with standard model expectations.

U2 - 10.1103/PhysRevLett.92.181801

DO - 10.1103/PhysRevLett.92.181801

M3 - Article

C2 - 15169483

SN - 1079-7114

VL - 92

SP - 181801

JO - Physical Review Letters

JF - Physical Review Letters

IS - 18

ER -

Limits on the decay-rate difference of neutral B mesons and on CP, T, and CPT violation in B⁰ - B(bar)⁰ oscillations

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