Determination of the X(3872) Meson Quantum Numbers
The quantum numbers of the X(3872) meson are determined to be J[superscript PC]=1[superscript ++] based on angular correlations in B[superscript +]→X(3872)K[superscript +] decays, where X(3872)→π[superscript +]π[superscript -]J/ψ and J/ψ→μ[superscript +]μ[superscript -]. The data correspond to 1.0 ...
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2013
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| Online Access: | http://hdl.handle.net/1721.1/79908 https://orcid.org/0000-0001-8285-3346 |
| _version_ | 1826205897109536768 |
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| author | Williams, Michael |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Williams, Michael |
| author_sort | Williams, Michael |
| collection | MIT |
| description | The quantum numbers of the X(3872) meson are determined to be J[superscript PC]=1[superscript ++] based on angular correlations in B[superscript +]→X(3872)K[superscript +] decays, where X(3872)→π[superscript +]π[superscript -]J/ψ and J/ψ→μ[superscript +]μ[superscript -]. The data correspond to 1.0 fb[superscript -1] of pp collisions collected by the LHCb detector. The only alternative assignment allowed by previous measurements J[superscript PC]=2[superscript -+] is rejected with a confidence level equivalent to more than 8 Gaussian standard deviations using a likelihood-ratio test in the full angular phase space. This result favors exotic explanations of the X(3872) state. |
| first_indexed | 2024-09-23T13:20:46Z |
| format | Article |
| id | mit-1721.1/79908 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T13:20:46Z |
| publishDate | 2013 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/799082022-10-01T14:40:54Z Determination of the X(3872) Meson Quantum Numbers Williams, Michael Massachusetts Institute of Technology. Department of Physics Williams, Michael The quantum numbers of the X(3872) meson are determined to be J[superscript PC]=1[superscript ++] based on angular correlations in B[superscript +]→X(3872)K[superscript +] decays, where X(3872)→π[superscript +]π[superscript -]J/ψ and J/ψ→μ[superscript +]μ[superscript -]. The data correspond to 1.0 fb[superscript -1] of pp collisions collected by the LHCb detector. The only alternative assignment allowed by previous measurements J[superscript PC]=2[superscript -+] is rejected with a confidence level equivalent to more than 8 Gaussian standard deviations using a likelihood-ratio test in the full angular phase space. This result favors exotic explanations of the X(3872) state. National Science Foundation (U.S.) 2013-08-21T19:29:58Z 2013-08-21T19:29:58Z 2013-05 2013-02 Article http://purl.org/eprint/type/JournalArticle 0031-9007 1079-7114 http://hdl.handle.net/1721.1/79908 Aaij, R., C. Abellan Beteta, B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, Z. Ajaltouni, et al. “Determination of the X(3872) Meson Quantum Numbers.” Physical Review Letters 110, no. 22 (May 2013). © 2013 CERN https://orcid.org/0000-0001-8285-3346 en_US http://dx.doi.org/10.1103/PhysRevLett.110.222001 Physical Review Letters Creative Commons Attribution 3.0 http://creativecommons.org/licenses/by/3.0/ application/pdf American Physical Society APS |
| spellingShingle | Williams, Michael Determination of the X(3872) Meson Quantum Numbers |
| title | Determination of the X(3872) Meson Quantum Numbers |
| title_full | Determination of the X(3872) Meson Quantum Numbers |
| title_fullStr | Determination of the X(3872) Meson Quantum Numbers |
| title_full_unstemmed | Determination of the X(3872) Meson Quantum Numbers |
| title_short | Determination of the X(3872) Meson Quantum Numbers |
| title_sort | determination of the x 3872 meson quantum numbers |
| url | http://hdl.handle.net/1721.1/79908 https://orcid.org/0000-0001-8285-3346 |
| work_keys_str_mv | AT williamsmichael determinationofthex3872mesonquantumnumbers |