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Precision measurement of the $$B^{0}$$ meson lifetime using $$B^{0}\rightarrow J/\psi K^{{* 0}}$$ decays with the ATLAS detector

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Precision measurement of the $$B^{0}$$ meson lifetime using $$B^{0}\rightarrow J/\psi K^{{* 0}}$$ decays with the ATLAS detector. / The ATLAS collaboration.
In: European Physical Journal C: Particles and Fields, Vol. 85, No. 7, 736, 03.07.2025.

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

Harvard

The ATLAS collaboration 2025, 'Precision measurement of the $$B^{0}$$ meson lifetime using $$B^{0}\rightarrow J/\psi K^{{* 0}}$$ decays with the ATLAS detector', European Physical Journal C: Particles and Fields, vol. 85, no. 7, 736. https://doi.org/10.1140/epjc/s10052-025-14232-8

APA

The ATLAS collaboration (2025). Precision measurement of the $$B^{0}$$ meson lifetime using $$B^{0}\rightarrow J/\psi K^{{* 0}}$$ decays with the ATLAS detector. European Physical Journal C: Particles and Fields, 85(7), Article 736. https://doi.org/10.1140/epjc/s10052-025-14232-8

Vancouver

The ATLAS collaboration. Precision measurement of the $$B^{0}$$ meson lifetime using $$B^{0}\rightarrow J/\psi K^{{* 0}}$$ decays with the ATLAS detector. European Physical Journal C: Particles and Fields. 2025 Jul 3;85(7):736. doi: 10.1140/epjc/s10052-025-14232-8

Author

The ATLAS collaboration. / Precision measurement of the $$B^{0}$$ meson lifetime using $$B^{0}\rightarrow J/\psi K^{{* 0}}$$ decays with the ATLAS detector. In: European Physical Journal C: Particles and Fields. 2025 ; Vol. 85, No. 7.

Bibtex

@article{2cfe64427afa47c99ace9b103605dfe2,
title = "Precision measurement of the $$B^{0}$$ meson lifetime using $$B^{0}\rightarrow J/\psi K^{{* 0}}$$ decays with the ATLAS detector",
abstract = "A measurement of the $$B^{0}$$ B 0 meson lifetime using $$ B^{0} \rightarrow J/\psi K^{*0} $$ B 0 {\^a}†{\textquoteright} J / {\"I}ˆ K {\^a}ˆ— 0 decays in data from 13 $$\text {TeV}$$ TeV proton{\^a}€“proton collisions with an integrated luminosity of $$ 140~\mathrm {fb^{-1}} $$ 140 fb - 1 recorded by the ATLAS detector at the LHC is presented. The measured effective lifetime is $$ \tau = 1.5053\pm 0.0012~\mathrm {(stat.)} \pm 0.0035~\mathrm {(syst.)~ps}. $$ {\"I}„ = 1.5053 {\^A}± 0.0012 ( stat . ) {\^A}± 0.0035 ( syst . ) ps . The average decay width extracted from the effective lifetime, using parameters from external sources, is $$\begin{aligned} \Gamma _d = 0.6639\pm 0.0005~\mathrm {(stat.)} \pm 0.0016~\mathrm {(syst.)}\\ \pm 0.0038~\text {(ext.)} \text {~ps}^{-1}, \end{aligned}$$ {\^I}“ d = 0.6639 {\^A}± 0.0005 ( stat . ) {\^A}± 0.0016 ( syst . ) {\^A}± 0.0038 (ext.) ps - 1 , where the uncertainties are statistical, systematic and from external sources. The earlier ATLAS measurement of $$\Gamma _s$$ {\^I}“ s in the $$B^{0}_{s} \rightarrow J/\psi \phi $$ B s 0 {\^a}†{\textquoteright} J / {\"I}ˆ {\"I}• decay was used to derive a value for the ratio of the average decay widths $$\Gamma _d$$ {\^I}“ d and $$\Gamma _s$$ {\^I}“ s for $$B^{0} $$ B 0 and $$B^{0}_{s} $$ B s 0 mesons respectively, of $$ \frac{\Gamma _d }{\Gamma _s } = 0.9905\pm 0.0022~\text {(stat.)} \pm 0.0036~\text {(syst.)} \pm 0.0057~\text {(ext.)}. $$ {\^I}“ d {\^I}“ s = 0.9905 {\^A}± 0.0022 (stat.) {\^A}± 0.0036 (syst.) {\^A}± 0.0057 (ext.) . The measured lifetime, average decay width and decay width ratio are in agreement with theoretical predictions and with measurements by other experiments. This measurement provides the most precise result of the effective lifetime of the $$B^{0}$$ B 0 meson to date.",
author = "{The ATLAS collaboration} and Hanadi Ali and Zainab Alsolami and A.E. Barton and G. Borissov and E.V. Bouhova-Thacker and Ruby Ferguson and James Ferrando and H. Fox and Alina Hagan and R.C.W. Henderson and R.W.L. Jones and V. Kartvelishvili and P.A. Love and Marshall, {Emma J.} and Luke McElhinney and L. Meng and D. Muenstermann and N. Ribaric and Elliot Sampson and M. Smizanska and A.M. Wharton",
year = "2025",
month = jul,
day = "3",
doi = "10.1140/epjc/s10052-025-14232-8",
language = "English",
volume = "85",
journal = "European Physical Journal C: Particles and Fields",
issn = "1434-6044",
publisher = "SPRINGER",
number = "7",

}

RIS

TY - JOUR

T1 - Precision measurement of the $$B^{0}$$ meson lifetime using $$B^{0}\rightarrow J/\psi K^{{* 0}}$$ decays with the ATLAS detector

AU - The ATLAS collaboration

AU - Ali, Hanadi

AU - Alsolami, Zainab

AU - Barton, A.E.

AU - Borissov, G.

AU - Bouhova-Thacker, E.V.

AU - Ferguson, Ruby

AU - Ferrando, James

AU - Fox, H.

AU - Hagan, Alina

AU - Henderson, R.C.W.

AU - Jones, R.W.L.

AU - Kartvelishvili, V.

AU - Love, P.A.

AU - Marshall, Emma J.

AU - McElhinney, Luke

AU - Meng, L.

AU - Muenstermann, D.

AU - Ribaric, N.

AU - Sampson, Elliot

AU - Smizanska, M.

AU - Wharton, A.M.

PY - 2025/7/3

Y1 - 2025/7/3

N2 - A measurement of the $$B^{0}$$ B 0 meson lifetime using $$ B^{0} \rightarrow J/\psi K^{*0} $$ B 0 → J / ψ K ∗ 0 decays in data from 13 $$\text {TeV}$$ TeV proton–proton collisions with an integrated luminosity of $$ 140~\mathrm {fb^{-1}} $$ 140 fb - 1 recorded by the ATLAS detector at the LHC is presented. The measured effective lifetime is $$ \tau = 1.5053\pm 0.0012~\mathrm {(stat.)} \pm 0.0035~\mathrm {(syst.)~ps}. $$ τ = 1.5053 ± 0.0012 ( stat . ) ± 0.0035 ( syst . ) ps . The average decay width extracted from the effective lifetime, using parameters from external sources, is $$\begin{aligned} \Gamma _d = 0.6639\pm 0.0005~\mathrm {(stat.)} \pm 0.0016~\mathrm {(syst.)}\\ \pm 0.0038~\text {(ext.)} \text {~ps}^{-1}, \end{aligned}$$ Γ d = 0.6639 ± 0.0005 ( stat . ) ± 0.0016 ( syst . ) ± 0.0038 (ext.) ps - 1 , where the uncertainties are statistical, systematic and from external sources. The earlier ATLAS measurement of $$\Gamma _s$$ Γ s in the $$B^{0}_{s} \rightarrow J/\psi \phi $$ B s 0 → J / ψ ϕ decay was used to derive a value for the ratio of the average decay widths $$\Gamma _d$$ Γ d and $$\Gamma _s$$ Γ s for $$B^{0} $$ B 0 and $$B^{0}_{s} $$ B s 0 mesons respectively, of $$ \frac{\Gamma _d }{\Gamma _s } = 0.9905\pm 0.0022~\text {(stat.)} \pm 0.0036~\text {(syst.)} \pm 0.0057~\text {(ext.)}. $$ Γ d Γ s = 0.9905 ± 0.0022 (stat.) ± 0.0036 (syst.) ± 0.0057 (ext.) . The measured lifetime, average decay width and decay width ratio are in agreement with theoretical predictions and with measurements by other experiments. This measurement provides the most precise result of the effective lifetime of the $$B^{0}$$ B 0 meson to date.

AB - A measurement of the $$B^{0}$$ B 0 meson lifetime using $$ B^{0} \rightarrow J/\psi K^{*0} $$ B 0 → J / ψ K ∗ 0 decays in data from 13 $$\text {TeV}$$ TeV proton–proton collisions with an integrated luminosity of $$ 140~\mathrm {fb^{-1}} $$ 140 fb - 1 recorded by the ATLAS detector at the LHC is presented. The measured effective lifetime is $$ \tau = 1.5053\pm 0.0012~\mathrm {(stat.)} \pm 0.0035~\mathrm {(syst.)~ps}. $$ τ = 1.5053 ± 0.0012 ( stat . ) ± 0.0035 ( syst . ) ps . The average decay width extracted from the effective lifetime, using parameters from external sources, is $$\begin{aligned} \Gamma _d = 0.6639\pm 0.0005~\mathrm {(stat.)} \pm 0.0016~\mathrm {(syst.)}\\ \pm 0.0038~\text {(ext.)} \text {~ps}^{-1}, \end{aligned}$$ Γ d = 0.6639 ± 0.0005 ( stat . ) ± 0.0016 ( syst . ) ± 0.0038 (ext.) ps - 1 , where the uncertainties are statistical, systematic and from external sources. The earlier ATLAS measurement of $$\Gamma _s$$ Γ s in the $$B^{0}_{s} \rightarrow J/\psi \phi $$ B s 0 → J / ψ ϕ decay was used to derive a value for the ratio of the average decay widths $$\Gamma _d$$ Γ d and $$\Gamma _s$$ Γ s for $$B^{0} $$ B 0 and $$B^{0}_{s} $$ B s 0 mesons respectively, of $$ \frac{\Gamma _d }{\Gamma _s } = 0.9905\pm 0.0022~\text {(stat.)} \pm 0.0036~\text {(syst.)} \pm 0.0057~\text {(ext.)}. $$ Γ d Γ s = 0.9905 ± 0.0022 (stat.) ± 0.0036 (syst.) ± 0.0057 (ext.) . The measured lifetime, average decay width and decay width ratio are in agreement with theoretical predictions and with measurements by other experiments. This measurement provides the most precise result of the effective lifetime of the $$B^{0}$$ B 0 meson to date.

U2 - 10.1140/epjc/s10052-025-14232-8

DO - 10.1140/epjc/s10052-025-14232-8

M3 - Journal article

VL - 85

JO - European Physical Journal C: Particles and Fields

JF - European Physical Journal C: Particles and Fields

SN - 1434-6044

IS - 7

M1 - 736

ER -