Precise Measurement of the D^ 0 and D^ + Lifetimes at Belle II.
| Author | |
| Abstract |
:
We report a measurement of the D^{0} and D^{+} lifetimes using D^{0}→K^{-}π^{+} and D^{+}→K^{-}π^{+}π^{+} decays reconstructed in e^{+}e^{-}→cc[over ¯] 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(D^{0})=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. |
| Year of Publication |
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2021
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| Journal |
:
Physical review letters
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| Volume |
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127
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| Issue |
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21
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| Number of Pages |
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211801
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| Date Published |
:
2021
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| ISSN Number |
:
0031-9007
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| URL |
:
https://link.aps.org/abstract/PRL/v127/p211801
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| DOI |
:
10.1103/PhysRevLett.127.211801
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| Short Title |
:
Phys Rev Lett
|
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