Probing the nature of the χ c 1 (3872) state using radiative decays
The radiative decays χc1(3872) → ψ(2S) γ and χc1(3872) → J/ψγ are used to probe the nature of the χc1(3872) state using proton-proton collision data collected with the LHCb detector, corresponding to an integrated luminosity of 9 fb−1. Using the B+ → χc1(3872)K+ decay, the χc1(3872) → ψ(2S) γ proces...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
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Springer
2024
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| _version_ | 1826315348435009536 |
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| author | Aaij, R Abdelmotteleb, ASW Abellan Beteta, C Abudinén, F Ackernley, T Adefisoye, AA Adeva, B Adinolfi, M Adlarson, P Agapopoulou, C Aidala, CA Ajaltouni, Z Akar, S Akiba, K Albicocco, P Albrecht, J Alessio, F Alexander, M Aliouche, Z Alvarez Cartelle, P Amalric, R Amato, S Amey, JL Amhis, Y Bacher, D Bovill, M Cervenkov, D Fischer, KM Gao, R Gilman, AL Goncalves Abrantes, F Harnew, N John, M Mackay, I Malde, S Martel, L Mohammed, RA Patoc, J Resmi, PK Scantlebury Smead, LG Smallwood, JC Stanislaus, S Suljik, F Tat, MD Vico Benet, D Wilkinson, G Zhang, S |
| author_facet | Aaij, R Abdelmotteleb, ASW Abellan Beteta, C Abudinén, F Ackernley, T Adefisoye, AA Adeva, B Adinolfi, M Adlarson, P Agapopoulou, C Aidala, CA Ajaltouni, Z Akar, S Akiba, K Albicocco, P Albrecht, J Alessio, F Alexander, M Aliouche, Z Alvarez Cartelle, P Amalric, R Amato, S Amey, JL Amhis, Y Bacher, D Bovill, M Cervenkov, D Fischer, KM Gao, R Gilman, AL Goncalves Abrantes, F Harnew, N John, M Mackay, I Malde, S Martel, L Mohammed, RA Patoc, J Resmi, PK Scantlebury Smead, LG Smallwood, JC Stanislaus, S Suljik, F Tat, MD Vico Benet, D Wilkinson, G Zhang, S |
| author_sort | Aaij, R |
| collection | OXFORD |
| description | The radiative decays χc1(3872) → ψ(2S) γ and χc1(3872) → J/ψγ are used to probe the nature of the χc1(3872) state using proton-proton collision data collected with the LHCb detector, corresponding to an integrated luminosity of 9 fb−1. Using the B+ → χc1(3872)K+ decay, the χc1(3872) → ψ(2S) γ process is observed for the first time and the ratio of its partial width to that of the χc1(3872) → J/ψγ decay is measured to beΓχc13872→ψ2SγΓχc13872→J/ψγ=1.67±0.21±0.12±0.04, where the first uncertainty is statistical, the second systematic and the third is due to the uncertainties on the branching fractions of the ψ(2S) and J/ψ mesons. The measured ratio makes the interpretation of the χc1(3872) state as a pure D0D¯∗0 + D¯0 D*0 molecule questionable and strongly indicates a sizeable compact charmonium or tetraquark component within the χc1(3872) state. |
| first_indexed | 2024-12-09T03:23:59Z |
| format | Journal article |
| id | oxford-uuid:820e5e96-be37-4058-a783-d0b2dfdf64b8 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-12-09T03:23:59Z |
| publishDate | 2024 |
| publisher | Springer |
| record_format | dspace |
| spelling | oxford-uuid:820e5e96-be37-4058-a783-d0b2dfdf64b82024-11-25T20:10:28ZProbing the nature of the χ c 1 (3872) state using radiative decaysJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:820e5e96-be37-4058-a783-d0b2dfdf64b8EnglishJisc Publications RouterSpringer2024Aaij, RAbdelmotteleb, ASWAbellan Beteta, CAbudinén, FAckernley, TAdefisoye, AAAdeva, BAdinolfi, MAdlarson, PAgapopoulou, CAidala, CAAjaltouni, ZAkar, SAkiba, KAlbicocco, PAlbrecht, JAlessio, FAlexander, MAliouche, ZAlvarez Cartelle, PAmalric, RAmato, SAmey, JLAmhis, YBacher, DBovill, MCervenkov, DFischer, KMGao, RGilman, ALGoncalves Abrantes, FHarnew, NJohn, MMackay, IMalde, SMartel, LMohammed, RAPatoc, JResmi, PKScantlebury Smead, LGSmallwood, JCStanislaus, SSuljik, FTat, MDVico Benet, DWilkinson, GZhang, SThe radiative decays χc1(3872) → ψ(2S) γ and χc1(3872) → J/ψγ are used to probe the nature of the χc1(3872) state using proton-proton collision data collected with the LHCb detector, corresponding to an integrated luminosity of 9 fb−1. Using the B+ → χc1(3872)K+ decay, the χc1(3872) → ψ(2S) γ process is observed for the first time and the ratio of its partial width to that of the χc1(3872) → J/ψγ decay is measured to beΓχc13872→ψ2SγΓχc13872→J/ψγ=1.67±0.21±0.12±0.04, where the first uncertainty is statistical, the second systematic and the third is due to the uncertainties on the branching fractions of the ψ(2S) and J/ψ mesons. The measured ratio makes the interpretation of the χc1(3872) state as a pure D0D¯∗0 + D¯0 D*0 molecule questionable and strongly indicates a sizeable compact charmonium or tetraquark component within the χc1(3872) state. |
| spellingShingle | Aaij, R Abdelmotteleb, ASW Abellan Beteta, C Abudinén, F Ackernley, T Adefisoye, AA Adeva, B Adinolfi, M Adlarson, P Agapopoulou, C Aidala, CA Ajaltouni, Z Akar, S Akiba, K Albicocco, P Albrecht, J Alessio, F Alexander, M Aliouche, Z Alvarez Cartelle, P Amalric, R Amato, S Amey, JL Amhis, Y Bacher, D Bovill, M Cervenkov, D Fischer, KM Gao, R Gilman, AL Goncalves Abrantes, F Harnew, N John, M Mackay, I Malde, S Martel, L Mohammed, RA Patoc, J Resmi, PK Scantlebury Smead, LG Smallwood, JC Stanislaus, S Suljik, F Tat, MD Vico Benet, D Wilkinson, G Zhang, S Probing the nature of the χ c 1 (3872) state using radiative decays |
| title | Probing the nature of the χ c 1 (3872) state using radiative decays |
| title_full | Probing the nature of the χ c 1 (3872) state using radiative decays |
| title_fullStr | Probing the nature of the χ c 1 (3872) state using radiative decays |
| title_full_unstemmed | Probing the nature of the χ c 1 (3872) state using radiative decays |
| title_short | Probing the nature of the χ c 1 (3872) state using radiative decays |
| title_sort | probing the nature of the χ c 1 3872 state using radiative decays |
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