Determination of the resonant parameters of chi_c0(3915) with global fit
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| Format: | Preprint |
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2024
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| _version_ | 1866914789264982016 |
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| author | Li, Chunhua Wang, Xijun Wu, Chen |
| author_facet | Li, Chunhua Wang, Xijun Wu, Chen |
| contents | The chi_c0(3915) was observed firstly by the Belle experiment in the omega J/psi invariant mass spectrum in the process B -> K omegaJ/psi, and then confirmed by the Babar experiment. The two experiments reported the resonant parameters of this particle in the both processes gammagamma -> omegaJ/psi and B -> K omega J/psi by assuming chi_c0(3915) as a S-wave Breit-Wigner resonance. We perform a global fit to the distributions of invariant mass of omega J/psi measured by the Belle and Babar experiments, and incorporate the measurement by the LHCb experiment additionally to extract the mass and width of chi_c0(3915). We obtain M = 3921.0 +/- 0.9 MeV/c2 and Gamma = 17.9 +/- 2.4 MeV which are consistent with the values on PDG within one standard deviation but with improved precision. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2403_01017 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Determination of the resonant parameters of chi_c0(3915) with global fit Li, Chunhua Wang, Xijun Wu, Chen High Energy Physics - Experiment The chi_c0(3915) was observed firstly by the Belle experiment in the omega J/psi invariant mass spectrum in the process B -> K omegaJ/psi, and then confirmed by the Babar experiment. The two experiments reported the resonant parameters of this particle in the both processes gammagamma -> omegaJ/psi and B -> K omega J/psi by assuming chi_c0(3915) as a S-wave Breit-Wigner resonance. We perform a global fit to the distributions of invariant mass of omega J/psi measured by the Belle and Babar experiments, and incorporate the measurement by the LHCb experiment additionally to extract the mass and width of chi_c0(3915). We obtain M = 3921.0 +/- 0.9 MeV/c2 and Gamma = 17.9 +/- 2.4 MeV which are consistent with the values on PDG within one standard deviation but with improved precision. |
| title | Determination of the resonant parameters of chi_c0(3915) with global fit |
| topic | High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2403.01017 |