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Measurement of the ...
Measurement of the lifetimes of promptly produced Omega(0)(c) and Xi(9)(c) baryons
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- Aaij, R. (författare)
- Nikhef Natl Inst Subatom Phys, Amsterdam, Netherlands
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- Eklund, Lars (författare)
- Uppsala universitet,Kärnfysik,Univ Glasgow, Sch Phys & Astron, Glasgow, Lanark, Scotland
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- Zunica, G. (författare)
- Univ Manchester, Dept Phys & Astron, Manchester, Lancs, England
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(creator_code:org_t)
- Elsevier, 2022
- 2022
- Engelska.
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Ingår i: Science Bulletin. - : Elsevier. - 2095-9273. ; 67:5, s. 479-487
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Abstract
Ämnesord
Stäng
- A measurement of the lifetimes of the Omega(0)(c) and Xi(0)(c) baryons is reported using proton-proton collision data at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.4 fb(-1) collected by the LHCb experiment. The Omega(0)(c) and Xi(0)(c) baryons are produced directly from proton interactions and reconstructed in the pK(-)K(-)pi(+) final state. The Omega(0)(c) lifetime is measured to be 276.5 +/- 13.4 +/- 4.4 +/- 0.7 fs, and the Xi(0)(c) lifetime is measured to be 148.0 +/- 2.3 +/- 2.2 +/- 0.2 fs, where the first uncertainty is statistical, the second systematic, and the third due to the uncertainty on the D-0 lifetime. These results confirm previous LHCb measurements based on semileptonic beauty-hadron decays, which disagree with earlier results of a four times shorter Omega(c)0 lifetime, and provide the single most precise measurement of the Omega(0 )(c)lifetime.
Ämnesord
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
Nyckelord
- Charmed baryon
- Flavour physics
- QCD
- Lifetime
- Charm physics
- LHCb
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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