Evidence for an ηc(1S)π−resonance in B0→ηc(1S)K+π−decays
A Dalitz plot analysis of B0→ηc(1S)K+π− decays is performed using data samples of pp collisions collected with the LHCb detector at centre-of-mass energies of s√=7, 8 and 13TeV, corresponding to a total integrated luminosity of 4.7 fb −1. A satisfactory description of the data is obtained when inc...
| Главные авторы: | , , , , , , , , , , , , , , , , , |
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| Формат: | Journal article |
| Опубликовано: |
SpringerOpen (part of Springer Nature)
2018
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| _version_ | 1826286883409231872 |
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| author | Aaij, R Beteta, C Adeva, B Bjoern, M Gruberg Cazon, B Hadavizadeh, T Hancock, T Harnew, N Hill, D John, M Jurik, N Malde, S Murphy, C Pili, M Pullen, H Rollings, A Vesterinen, M Wilkinson, G |
| author_facet | Aaij, R Beteta, C Adeva, B Bjoern, M Gruberg Cazon, B Hadavizadeh, T Hancock, T Harnew, N Hill, D John, M Jurik, N Malde, S Murphy, C Pili, M Pullen, H Rollings, A Vesterinen, M Wilkinson, G |
| author_sort | Aaij, R |
| collection | OXFORD |
| description | A Dalitz plot analysis of B0→ηc(1S)K+π− decays is performed using data samples of pp collisions collected with the LHCb detector at centre-of-mass energies of s√=7, 8 and 13TeV, corresponding to a total integrated luminosity of 4.7 fb −1. A satisfactory description of the data is obtained when including a contribution representing an exotic ηc(1S)π− resonant state. The significance of this exotic resonance is more than three standard deviations, while its mass and width are 4096±20 +18−22MeV and 152±58 +60−35MeV, respectively. The spin-parity assignments JP=0+ and JP=1− are both consistent with the data. In addition, the first measurement of the B0→ηc(1S)K+π− branching fraction is performed and gives B(B0→ηc(1S)K+π−)=(5.73±0.24±0.13±0.66)×10−4, where the first uncertainty is statistical, the second systematic, and the third is due to limited knowledge of external branching fractions. |
| first_indexed | 2024-03-07T01:50:20Z |
| format | Journal article |
| id | oxford-uuid:99decc3b-5f47-4b18-bc8f-60e455b226e5 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T01:50:20Z |
| publishDate | 2018 |
| publisher | SpringerOpen (part of Springer Nature) |
| record_format | dspace |
| spelling | oxford-uuid:99decc3b-5f47-4b18-bc8f-60e455b226e52022-03-27T00:17:26ZEvidence for an ηc(1S)π−resonance in B0→ηc(1S)K+π−decaysJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:99decc3b-5f47-4b18-bc8f-60e455b226e5Symplectic Elements at OxfordSpringerOpen (part of Springer Nature)2018Aaij, RBeteta, CAdeva, BBjoern, MGruberg Cazon, BHadavizadeh, THancock, THarnew, NHill, DJohn, MJurik, NMalde, SMurphy, CPili, MPullen, HRollings, AVesterinen, MWilkinson, GA Dalitz plot analysis of B0→ηc(1S)K+π− decays is performed using data samples of pp collisions collected with the LHCb detector at centre-of-mass energies of s√=7, 8 and 13TeV, corresponding to a total integrated luminosity of 4.7 fb −1. A satisfactory description of the data is obtained when including a contribution representing an exotic ηc(1S)π− resonant state. The significance of this exotic resonance is more than three standard deviations, while its mass and width are 4096±20 +18−22MeV and 152±58 +60−35MeV, respectively. The spin-parity assignments JP=0+ and JP=1− are both consistent with the data. In addition, the first measurement of the B0→ηc(1S)K+π− branching fraction is performed and gives B(B0→ηc(1S)K+π−)=(5.73±0.24±0.13±0.66)×10−4, where the first uncertainty is statistical, the second systematic, and the third is due to limited knowledge of external branching fractions. |
| spellingShingle | Aaij, R Beteta, C Adeva, B Bjoern, M Gruberg Cazon, B Hadavizadeh, T Hancock, T Harnew, N Hill, D John, M Jurik, N Malde, S Murphy, C Pili, M Pullen, H Rollings, A Vesterinen, M Wilkinson, G Evidence for an ηc(1S)π−resonance in B0→ηc(1S)K+π−decays |
| title | Evidence for an ηc(1S)π−resonance in B0→ηc(1S)K+π−decays |
| title_full | Evidence for an ηc(1S)π−resonance in B0→ηc(1S)K+π−decays |
| title_fullStr | Evidence for an ηc(1S)π−resonance in B0→ηc(1S)K+π−decays |
| title_full_unstemmed | Evidence for an ηc(1S)π−resonance in B0→ηc(1S)K+π−decays |
| title_short | Evidence for an ηc(1S)π−resonance in B0→ηc(1S)K+π−decays |
| title_sort | evidence for an ηc 1s π resonance in b0 ηc 1s k π decays |
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