Study of X(3915)→J/ψω in two-photon collisions
We study the process γγ→J/ψω using a data sample of 519.2 fb[superscript -1] recorded by the BABAR detector at SLAC at the PEP-II asymmetric-energy e[superscript +]e[superscript -] collider at center-of-mass energies near the Υ(nS) (n=2,3,4) resonances. We confirm the existence of the charmoniumlik...
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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/1721.1/76657 |
| _version_ | 1811078206699077632 |
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| author | Dujmic, Denis Sciolla, Gabriella Cowan, Ray F |
| author2 | Massachusetts Institute of Technology. Laboratory for Nuclear Science |
| author_facet | Massachusetts Institute of Technology. Laboratory for Nuclear Science Dujmic, Denis Sciolla, Gabriella Cowan, Ray F |
| author_sort | Dujmic, Denis |
| collection | MIT |
| description | We study the process γγ→J/ψω using a data sample of 519.2 fb[superscript -1] recorded by the BABAR detector at SLAC at the PEP-II asymmetric-energy e[superscript +]e[superscript -] collider at center-of-mass energies near the Υ(nS) (n=2,3,4) resonances. We confirm the existence of the charmoniumlike resonance X(3915) decaying to J/ψω with a significance of 7.6 standard deviations, including systematic uncertainties, and measure its mass (3919.4±2.2±1.6) MeV/c[superscript 2] and width (13±6±3) MeV, where the first uncertainty is statistical and the second systematic. A spin-parity analysis supports the assignment J[superscript P]=0[superscript +] and therefore the identification of the signal as due to the χ[subscript c0](2P) resonance. In this hypothesis we determine the product between the two-photon width and the final state branching fraction to be (52±10±3) eV. |
| first_indexed | 2024-09-23T10:55:37Z |
| format | Article |
| id | mit-1721.1/76657 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T10:55:37Z |
| publishDate | 2013 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/766572023-02-26T05:30:35Z Study of X(3915)→J/ψω in two-photon collisions Dujmic, Denis Sciolla, Gabriella Cowan, Ray F Massachusetts Institute of Technology. Laboratory for Nuclear Science Cowan, Ray Franklin Dujmic, Denis Sciolla, Gabriella We study the process γγ→J/ψω using a data sample of 519.2 fb[superscript -1] recorded by the BABAR detector at SLAC at the PEP-II asymmetric-energy e[superscript +]e[superscript -] collider at center-of-mass energies near the Υ(nS) (n=2,3,4) resonances. We confirm the existence of the charmoniumlike resonance X(3915) decaying to J/ψω with a significance of 7.6 standard deviations, including systematic uncertainties, and measure its mass (3919.4±2.2±1.6) MeV/c[superscript 2] and width (13±6±3) MeV, where the first uncertainty is statistical and the second systematic. A spin-parity analysis supports the assignment J[superscript P]=0[superscript +] and therefore the identification of the signal as due to the χ[subscript c0](2P) resonance. In this hypothesis we determine the product between the two-photon width and the final state branching fraction to be (52±10±3) eV. Alfred P. Sloan Foundation 2013-01-30T16:36:13Z 2013-01-30T16:36:13Z 2012-10 2012-07 Article http://purl.org/eprint/type/JournalArticle 1550-7998 1089-4918 http://hdl.handle.net/1721.1/76657 Lees, J. et al. “Study of X(3915)→J/ψω in Two-photon Collisions.” Physical Review D 86.7 (2012). © 2012 American Physical Society en_US http://dx.doi.org/10.1103/PhysRevD.86.072002 Physical Review D 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 APS |
| spellingShingle | Dujmic, Denis Sciolla, Gabriella Cowan, Ray F Study of X(3915)→J/ψω in two-photon collisions |
| title | Study of X(3915)→J/ψω in two-photon collisions |
| title_full | Study of X(3915)→J/ψω in two-photon collisions |
| title_fullStr | Study of X(3915)→J/ψω in two-photon collisions |
| title_full_unstemmed | Study of X(3915)→J/ψω in two-photon collisions |
| title_short | Study of X(3915)→J/ψω in two-photon collisions |
| title_sort | study of x 3915 j ψω in two photon collisions |
| url | http://hdl.handle.net/1721.1/76657 |
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