Precise Measurement of the 
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 and 
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 Lifetimes at Belle II

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Zhilich, Q. D., Zhou, X. Y., Zhou, V. I., Zhukova, R., Žlebčík

doi:10.1103/physrevlett.127.211801

Precise Measurement of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>D</mml:mi><mml:mn>0</mml:mn></mml:msup></mml:math> and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>D</mml:mi><mml:mo>+</mml:mo></mml:msup></mml:math> Lifetimes at Belle II

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Precise Measurement of the D⁰ and D⁺ Lifetimes at Belle II

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We report a measurement of the D⁰ and D⁺ lifetimes using D⁰→K⁻π⁺ and D⁺→K⁻π⁺π⁺ decays reconstructed in e⁺e⁻→[Formula: see text] data recorded by the Belle II experiment at the SuperKEKB asymmetric-energy e⁺e⁻ collider. The data, collected at center-of-mass energies at or near the Υ(4S) resonance, correspond to an integrated luminosity of 72 fb⁻¹. The results, τ(D⁰)=410.5±1.1(stat)±0.8(syst) fs and τ(D⁺)=1030.4±4.7(stat)±3.1(syst) fs, are the most precise to date and are consistent with previous determinations.

source:https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.127.211801

収録刊行物

Physical Review Letters

Physical Review Letters 127 (21), 211801-, 2021-11-19

American Physical Society

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CRID

1050290473046076032
NII論文ID

120007177915
ISSN

10797114

00319007
DOI

10.1103/physrevlett.127.211801
Web Site

http://id.nii.ac.jp/1394/00002171/

https://link.aps.org/article/10.1103/PhysRevLett.127.211801

http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevLett.127.211801/fulltext
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