Observation of the Bc+→J/ψπ+π0 decay.
In: Journal of High Energy Physics, Jg. 2024 (2024-04-01), Heft 4, S. 1-28
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Zugriff:
The first observation of the B c + → J / ψ π + π 0 decay is reported with high significance using proton-proton collision data, corresponding to an integrated luminosity of 9 fb −1 , collected with the LHCb detector at centre-of-mass energies of 7, 8, and 13 TeV. The ratio of its branching fraction relative to the B c + → J / ψ π + channel is measured to be B B c + → J / ψ π + π 0 B B c + → J / ψ π + = 2.80 ± 0.15 ± 0.11 ± 0.16 , where the first uncertainty is statistical, the second systematic and the third related to imprecise knowledge of the branching fractions for B + → J/ψK *+ and B c + → J / ψ π + decays, which are used to determine the π 0 detection efficiency. The π + π 0 mass spectrum is found to be consistent with the dominance of an intermediate ρ + contribution in accordance with a model based on QCD factorisation. [ABSTRACT FROM AUTHOR]
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Observation of the Bc+→J/ψπ+π0 decay.
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Autor/in / Beteiligte Person: | Aaij, R. ; Abdelmotteleb, A. S. W. ; Abellan Beteta, C. ; Abudinén, F. ; Ackernley, T. ; Adams, J. A. ; Adefisoye, A. A. ; Adeva, B. ; Adinolfi, M. ; Adlarson, P. ; Agapopoulou, C. ; Aidala, C. A. ; Ajaltouni, Z. ; Akar, S. ; Akiba, K. ; Albicocco, P. ; Albrecht, J. ; Alessio, F. ; Alexander, M. ; Aliouche, Z. |
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Zeitschrift: | Journal of High Energy Physics, Jg. 2024 (2024-04-01), Heft 4, S. 1-28 |
Veröffentlichung: | 2024 |
Medientyp: | academicJournal |
ISSN: | 1126-6708 (print) |
DOI: | 10.1007/JHEP04(2024)151 |
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