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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/131777
Measurements of the branching fractions and CP asymmetries of B±→J/ψπ± and B±→ψ(2S)π± decays
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A study of B ± → J / ψ π ± and B ± → ψ ( 2 S ) π ± decays is performed with data corresponding to 0.37 fb − 1 of proton-proton collisions at √ s = 7 TeV . Their branching fractions are found to be B ( B ± → J / ψ π ± ) = ( 3.88 ± 0.11 ± 0.15 ) × 10 − 5 and B ( B ± → ψ ( 2 S ) π ± ) = ( 2.52 ± 0.26 ± 0.15 ) × 10 − 5 , where the first uncertainty is related to the statistical size of the sample and the second quantifies systematic effects. The measured C P asymmetries in these modes are A J / ψ π C P = 0.005 ± 0.027 ± 0.011 and A ψ ( 2 S ) π C P = 0.048 ± 0.090 ± 0.011 with no evidence of direct C P violation seen.
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ABELLAN BETETA, Carlos, et al. Measurements of the branching fractions and CP asymmetries of B±→J/ψπ± and B±→ψ(2S)π± decays. Physical Review D. 2012. Vol. 85, num. 9, pags. 091105. ISSN 1550-7998. [consulted: 18 of June of 2026]. Available at: https://hdl.handle.net/2445/131777