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Observation of five new narrow $\Omega_c^0$ states decaying to $\Xi_c^+K^-$


LHCb Collaboration; Bernet, R; Müller, K; Serra, N; Steinkamp, O; Straumann, U; Vollhardt, A; et al (2017). Observation of five new narrow $\Omega_c^0$ states decaying to $\Xi_c^+K^-$. Physical Review Letters, 118(18):182001.

Abstract

The $\Xi_c^+K^-$ mass spectrum is studied with a sample of pp collision data corresponding to an integrated luminosity of 3.3  fb$^{−1}$, collected by the LHCb experiment. The $\Xi_c^+$ is reconstructed in the decay mode $pK^−\pi^+$. Five new, narrow excited $\Omega_c^0$ states are observed: the $\Omega_c(3000)^0$, $\Omega_c(3050)^0$, $\Omega_c(3066)^0$, $\Omega_c(3090)^0$, and $\Omega_c(3119)^0$. Measurements of their masses and widths are reported.

Abstract

The $\Xi_c^+K^-$ mass spectrum is studied with a sample of pp collision data corresponding to an integrated luminosity of 3.3  fb$^{−1}$, collected by the LHCb experiment. The $\Xi_c^+$ is reconstructed in the decay mode $pK^−\pi^+$. Five new, narrow excited $\Omega_c^0$ states are observed: the $\Omega_c(3000)^0$, $\Omega_c(3050)^0$, $\Omega_c(3066)^0$, $\Omega_c(3090)^0$, and $\Omega_c(3119)^0$. Measurements of their masses and widths are reported.

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Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2017
Deposited On:06 Feb 2018 16:27
Last Modified:19 Feb 2018 10:45
Publisher:American Physical Society
ISSN:0031-9007
OA Status:Hybrid
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1103/PhysRevLett.118.182001

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