Observation of the Resonant Character of the Z(4430)[superscript −] State
Resonant structures in B[superscript 0] → ψ[superscript ′]π[superscript −]K[superscript +] decays are analyzed by performing a four-dimensional fit of the decay amplitude, using pp collision data corresponding to 3 fb[superscript −1] collected with the LHCb detector. The data cannot be described wi...
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2014
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| Online Access: | http://hdl.handle.net/1721.1/90891 https://orcid.org/0000-0001-8285-3346 https://orcid.org/0000-0002-4670-1334 https://orcid.org/0000-0001-5534-1732 |
| _version_ | 1826213638433669120 |
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| author | Counts, Ian Thomas Hunt Williams, Michael Ilten, Philip J |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Counts, Ian Thomas Hunt Williams, Michael Ilten, Philip J |
| author_sort | Counts, Ian Thomas Hunt |
| collection | MIT |
| description | Resonant structures in B[superscript 0] → ψ[superscript ′]π[superscript −]K[superscript +] decays are analyzed by performing a four-dimensional fit of the decay amplitude, using pp collision data corresponding to 3 fb[superscript −1] collected with the LHCb detector. The data cannot be described with K[superscript +]π[superscript −] resonances alone, which is confirmed with a model-independent approach. A highly significant Z(4430)[superscript −] → ψ[superscript ′]π[superscript −] component is required, thus confirming the existence of this state. The observed evolution of the Z(4430)[superscript −] amplitude with the ψ[superscript ′]π[superscript −] mass establishes the resonant nature of this particle. The mass and width measurements are substantially improved. The spin parity is determined unambiguously to be 1[superscript +]. |
| first_indexed | 2024-09-23T15:52:27Z |
| format | Article |
| id | mit-1721.1/90891 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T15:52:27Z |
| publishDate | 2014 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/908912023-02-26T08:03:22Z Observation of the Resonant Character of the Z(4430)[superscript −] State Counts, Ian Thomas Hunt Williams, Michael Ilten, Philip J Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Counts, Ian Thomas Hunt Ilten, Philip James Williams, Michael Resonant structures in B[superscript 0] → ψ[superscript ′]π[superscript −]K[superscript +] decays are analyzed by performing a four-dimensional fit of the decay amplitude, using pp collision data corresponding to 3 fb[superscript −1] collected with the LHCb detector. The data cannot be described with K[superscript +]π[superscript −] resonances alone, which is confirmed with a model-independent approach. A highly significant Z(4430)[superscript −] → ψ[superscript ′]π[superscript −] component is required, thus confirming the existence of this state. The observed evolution of the Z(4430)[superscript −] amplitude with the ψ[superscript ′]π[superscript −] mass establishes the resonant nature of this particle. The mass and width measurements are substantially improved. The spin parity is determined unambiguously to be 1[superscript +]. National Science Foundation (U.S.) 2014-10-10T16:21:22Z 2014-10-10T16:21:22Z 2014-06 2014-04 Article http://purl.org/eprint/type/JournalArticle 0031-9007 1079-7114 http://hdl.handle.net/1721.1/90891 Aaij, R., B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, J. Albrecht, F. Alessio, et al. “Observation of the Resonant Character of the Z(4430)[superscript −] State.” Physical Review Letters 112, no. 22 (June 2014). © 2014 CERN, for the LHCb Collaboration https://orcid.org/0000-0001-8285-3346 https://orcid.org/0000-0002-4670-1334 https://orcid.org/0000-0001-5534-1732 en_US http://dx.doi.org/10.1103/PhysRevLett.112.222002 Physical Review Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society American Physical Society |
| spellingShingle | Counts, Ian Thomas Hunt Williams, Michael Ilten, Philip J Observation of the Resonant Character of the Z(4430)[superscript −] State |
| title | Observation of the Resonant Character of the Z(4430)[superscript −] State |
| title_full | Observation of the Resonant Character of the Z(4430)[superscript −] State |
| title_fullStr | Observation of the Resonant Character of the Z(4430)[superscript −] State |
| title_full_unstemmed | Observation of the Resonant Character of the Z(4430)[superscript −] State |
| title_short | Observation of the Resonant Character of the Z(4430)[superscript −] State |
| title_sort | observation of the resonant character of the z 4430 superscript state |
| url | http://hdl.handle.net/1721.1/90891 https://orcid.org/0000-0001-8285-3346 https://orcid.org/0000-0002-4670-1334 https://orcid.org/0000-0001-5534-1732 |
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