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Measurement of the B+ and B0 lifetimes and search for CP(T) violation using reconstructed secondary vertices

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Measurement of the B+ and B0 lifetimes and search for CP(T) violation using reconstructed secondary vertices. / OPAL Collaboration.
In: European Physical Journal C: Particles and Fields, Vol. 12, No. 4, 02.2000, p. 609-626.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

OPAL Collaboration 2000, 'Measurement of the B+ and B0 lifetimes and search for CP(T) violation using reconstructed secondary vertices', European Physical Journal C: Particles and Fields, vol. 12, no. 4, pp. 609-626. https://doi.org/10.1007/s100520000322

APA

OPAL Collaboration (2000). Measurement of the B+ and B0 lifetimes and search for CP(T) violation using reconstructed secondary vertices. European Physical Journal C: Particles and Fields, 12(4), 609-626. https://doi.org/10.1007/s100520000322

Vancouver

OPAL Collaboration. Measurement of the B+ and B0 lifetimes and search for CP(T) violation using reconstructed secondary vertices. European Physical Journal C: Particles and Fields. 2000 Feb;12(4):609-626. doi: 10.1007/s100520000322

Author

OPAL Collaboration. / Measurement of the B+ and B0 lifetimes and search for CP(T) violation using reconstructed secondary vertices. In: European Physical Journal C: Particles and Fields. 2000 ; Vol. 12, No. 4. pp. 609-626.

Bibtex

@article{831648adc62148da881e6dd8717e859f,
title = "Measurement of the B+ and B0 lifetimes and search for CP(T) violation using reconstructed secondary vertices",
abstract = "The lifetimes of the B+B+ and B0B0 mesons, and their ratio, have been measured in the OPAL experiment using 2.4 million hadronic Z0Z0 decays recorded at LEP. Z0→bb¯¯¯Z0→bb¯ decays were tagged using displaced secondary vertices and high momentum electrons and muons. The lifetimes were then measured using well-reconstructed charged and neutral secondary vertices selected in this tagged data sample. The results areτB+ = 1.643 ± 0.037 ± 0.025 psτB0 = 1.523 ± 0.057 ± 0.053 psτB+ /τB0 = 1.079 ± 0.064 ± 0.041,where in each case the first error is statistical and the second systematic.A larger data sample of 3.1 million hadronic Z0 decays has been used to search for CP and CPT violating effects by comparison of inclusive b and b¯ hadron decays. No evidence for such effects is seen. The CP violation parameter Re(ϵB) is measured to beRe(B)=0.001 ± 0.014 ± 0.003 and the fractional difference between b and b¯ hadron lifetimes is measured to be (∆τ_τ)b≡ τ (b hadron) − τ (b hadron)__τ (average) = −0.001 ± 0.012 ± 0.008",
author = "Vakhtang Kartvelishvili and {OPAL Collaboration}",
year = "2000",
month = feb,
doi = "10.1007/s100520000322",
language = "English",
volume = "12",
pages = "609--626",
journal = "European Physical Journal C: Particles and Fields",
issn = "1434-6044",
publisher = "SPRINGER",
number = "4",

}

RIS

TY - JOUR

T1 - Measurement of the B+ and B0 lifetimes and search for CP(T) violation using reconstructed secondary vertices

AU - Kartvelishvili, Vakhtang

AU - OPAL Collaboration

PY - 2000/2

Y1 - 2000/2

N2 - The lifetimes of the B+B+ and B0B0 mesons, and their ratio, have been measured in the OPAL experiment using 2.4 million hadronic Z0Z0 decays recorded at LEP. Z0→bb¯¯¯Z0→bb¯ decays were tagged using displaced secondary vertices and high momentum electrons and muons. The lifetimes were then measured using well-reconstructed charged and neutral secondary vertices selected in this tagged data sample. The results areτB+ = 1.643 ± 0.037 ± 0.025 psτB0 = 1.523 ± 0.057 ± 0.053 psτB+ /τB0 = 1.079 ± 0.064 ± 0.041,where in each case the first error is statistical and the second systematic.A larger data sample of 3.1 million hadronic Z0 decays has been used to search for CP and CPT violating effects by comparison of inclusive b and b¯ hadron decays. No evidence for such effects is seen. The CP violation parameter Re(ϵB) is measured to beRe(B)=0.001 ± 0.014 ± 0.003 and the fractional difference between b and b¯ hadron lifetimes is measured to be (∆τ_τ)b≡ τ (b hadron) − τ (b hadron)__τ (average) = −0.001 ± 0.012 ± 0.008

AB - The lifetimes of the B+B+ and B0B0 mesons, and their ratio, have been measured in the OPAL experiment using 2.4 million hadronic Z0Z0 decays recorded at LEP. Z0→bb¯¯¯Z0→bb¯ decays were tagged using displaced secondary vertices and high momentum electrons and muons. The lifetimes were then measured using well-reconstructed charged and neutral secondary vertices selected in this tagged data sample. The results areτB+ = 1.643 ± 0.037 ± 0.025 psτB0 = 1.523 ± 0.057 ± 0.053 psτB+ /τB0 = 1.079 ± 0.064 ± 0.041,where in each case the first error is statistical and the second systematic.A larger data sample of 3.1 million hadronic Z0 decays has been used to search for CP and CPT violating effects by comparison of inclusive b and b¯ hadron decays. No evidence for such effects is seen. The CP violation parameter Re(ϵB) is measured to beRe(B)=0.001 ± 0.014 ± 0.003 and the fractional difference between b and b¯ hadron lifetimes is measured to be (∆τ_τ)b≡ τ (b hadron) − τ (b hadron)__τ (average) = −0.001 ± 0.012 ± 0.008

U2 - 10.1007/s100520000322

DO - 10.1007/s100520000322

M3 - Journal article

VL - 12

SP - 609

EP - 626

JO - European Physical Journal C: Particles and Fields

JF - European Physical Journal C: Particles and Fields

SN - 1434-6044

IS - 4

ER -