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Experimental constraints on the properties of Pc states

Timothy Burns Orcid Logo, E. S. Swanson Orcid Logo

The European Physical Journal A, Volume: 58, Issue: 4

Swansea University Author: Timothy Burns Orcid Logo

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DOI (Published version): 10.1140/epja/s10050-022-00723-9

Abstract

Using new experimental data on photoproduction and Λ0b decays, we derive constraints on the properties of the LHCb Pc states. We conclude that Pc(4312), Pc(4380) and Pc(4440) can be described as ΣcD¯, Σ∗cD¯ and ΣcD¯∗ molecules, but that Pc(4457) does not fit into the same picture. Based on the appar...

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Published in: The European Physical Journal A
ISSN: 1434-601X
Published: Springer Science and Business Media LLC 2022
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URI: https://cronfa.swan.ac.uk/Record/cronfa60159
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spelling 2022-06-08T15:22:58.4205673 v2 60159 2022-06-08 Experimental constraints on the properties of Pc states 00c358e0adea90df98f1d4a5188cb3ed 0000-0002-7201-6437 Timothy Burns Timothy Burns true false 2022-06-08 SPH Using new experimental data on photoproduction and Λ0b decays, we derive constraints on the properties of the LHCb Pc states. We conclude that Pc(4312), Pc(4380) and Pc(4440) can be described as ΣcD¯, Σ∗cD¯ and ΣcD¯∗ molecules, but that Pc(4457) does not fit into the same picture. Based on the apparent absence of additional partner states, and the striking disparity between Λ+cD¯0 and Λ+cD¯∗0 decays, we conclude that Pc(4440) has 3/2− quantum numbers. Using heavy-quark symmetry we predict large experimental signals for Pc states in ηcpK−, Λ+cD¯∗0K−, and Σ(∗)cD¯K−. We also argue that current experimental data on photoproduction is almost at the level of sensitivity required to observe Pc states. Journal Article The European Physical Journal A 58 4 Springer Science and Business Media LLC 1434-601X 16 4 2022 2022-04-16 10.1140/epja/s10050-022-00723-9 COLLEGE NANME Physics COLLEGE CODE SPH Swansea University SU Library paid the OA fee (TA Institutional Deal) Swanson’s research was supported by the U.S. Department of Energy under contract DE-SC0019232 2022-06-08T15:22:58.4205673 2022-06-08T15:16:55.8012395 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Timothy Burns 0000-0002-7201-6437 1 E. S. Swanson 0000-0001-7394-9215 2 60159__24255__17d99b021e524d5eba3cd7b93b42f4d8.pdf 60159.pdf 2022-06-08T15:21:17.4616577 Output 626348 application/pdf Version of Record true © The Author(s) 2022. This article is licensed under a Creative Commons Attribution 4.0 International License true eng 16 Apr 2022
title Experimental constraints on the properties of Pc states
spellingShingle Experimental constraints on the properties of Pc states
Timothy Burns
title_short Experimental constraints on the properties of Pc states
title_full Experimental constraints on the properties of Pc states
title_fullStr Experimental constraints on the properties of Pc states
title_full_unstemmed Experimental constraints on the properties of Pc states
title_sort Experimental constraints on the properties of Pc states
author_id_str_mv 00c358e0adea90df98f1d4a5188cb3ed
author_id_fullname_str_mv 00c358e0adea90df98f1d4a5188cb3ed_***_Timothy Burns
author Timothy Burns
author2 Timothy Burns
E. S. Swanson
format Journal article
container_title The European Physical Journal A
container_volume 58
container_issue 4
publishDate 2022
institution Swansea University
issn 1434-601X
doi_str_mv 10.1140/epja/s10050-022-00723-9
publisher Springer Science and Business Media LLC
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics
document_store_str 1
active_str 0
description Using new experimental data on photoproduction and Λ0b decays, we derive constraints on the properties of the LHCb Pc states. We conclude that Pc(4312), Pc(4380) and Pc(4440) can be described as ΣcD¯, Σ∗cD¯ and ΣcD¯∗ molecules, but that Pc(4457) does not fit into the same picture. Based on the apparent absence of additional partner states, and the striking disparity between Λ+cD¯0 and Λ+cD¯∗0 decays, we conclude that Pc(4440) has 3/2− quantum numbers. Using heavy-quark symmetry we predict large experimental signals for Pc states in ηcpK−, Λ+cD¯∗0K−, and Σ(∗)cD¯K−. We also argue that current experimental data on photoproduction is almost at the level of sensitivity required to observe Pc states.
published_date 2022-04-16T04:18:02Z
_version_ 1763754201749389312
score 11.0133505

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