TY - JOUR

T1 - Measurement of the lifetimes of promptly produced Ωc0 and Ξc0 baryons

AU - The LHCb Collaboration

AU - Artamonov, A.

AU - Belov, I.

AU - Belyaev, I.

AU - Boldyrev, A.

AU - Bondar, A.

AU - Bondar, N.

AU - Butkevich, A.

AU - Chen, C.

AU - Chen, S.

AU - Chernov, A.

AU - Derkach, D.

AU - Fan, Y.

AU - Kudryavtsev, V.

AU - Maltsev, T.

AU - Shekhtman, L.

AU - Кроковный, Павел Петрович

AU - Воробьев, Виталий Сергеевич

AU - Эйдельман, Семен Исаакович

N1 - Lhcb Collaboration. Measurement of the lifetimes of promptly produced Ωc0 and Ξc0 baryons / Lhcb Collaboration // Science Bulletin. – 2021. – DOI 10.1016/j.scib.2021.11.022.

PY - 2022/3/15

Y1 - 2022/3/15

N2 - A measurement of the lifetimes of the Ωc0 and Ξc0 baryons is reported using proton–proton collision data at a centre-of-mass energy of 13TeV, corresponding to an integrated luminosity of 5.4fb-1 collected by the LHCb experiment. The Ωc0 and Ξc0 baryons are produced directly from proton interactions and reconstructed in the pK-K-π+ final state. The Ωc0 lifetime is measured to be 276.5±13.4±4.4±0.7fs, and the Ξc0 lifetime is measured to be 148.0±2.3±2.2±0.2fs, where the first uncertainty is statistical, the second systematic, and the third due to the uncertainty on the D0 lifetime. These results confirm previous LHCb measurements based on semileptonic beauty-hadron decays, which disagree with earlier results of a four times shorter Ωc0 lifetime, and provide the single most precise measurement of the Ωc0 lifetime.

AB - A measurement of the lifetimes of the Ωc0 and Ξc0 baryons is reported using proton–proton collision data at a centre-of-mass energy of 13TeV, corresponding to an integrated luminosity of 5.4fb-1 collected by the LHCb experiment. The Ωc0 and Ξc0 baryons are produced directly from proton interactions and reconstructed in the pK-K-π+ final state. The Ωc0 lifetime is measured to be 276.5±13.4±4.4±0.7fs, and the Ξc0 lifetime is measured to be 148.0±2.3±2.2±0.2fs, where the first uncertainty is statistical, the second systematic, and the third due to the uncertainty on the D0 lifetime. These results confirm previous LHCb measurements based on semileptonic beauty-hadron decays, which disagree with earlier results of a four times shorter Ωc0 lifetime, and provide the single most precise measurement of the Ωc0 lifetime.

KW - Charm physics

KW - Charmed baryon

KW - Flavour physics

KW - LHCb

KW - Lifetime

KW - QCD

UR - https://www.mendeley.com/catalogue/dc9f6fd9-d487-3fb6-8dc0-6bd63b9dfddc/

UR - http://University of Chinese Academy of Sciences

U2 - 10.1016/j.scib.2021.11.022

DO - 10.1016/j.scib.2021.11.022

M3 - Article

C2 - 36546168

VL - 67

SP - 479

EP - 487

JO - Science Bulletin

JF - Science Bulletin

SN - 2095-9273

IS - 5

ER -