Measurement of the branching fraction of B0→ J/ψπ0 decays

A bstract The ratio of branching fractions between B 0 → J/ψπ 0 and B + → J/ψK *+ decays is measured with proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb − 1 . The measured value is B B 0 → J / ψ π 0 B B + → J / ψ K ∗ + = 1.153 ± 0.053...

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Published in:The journal of high energy physics 2024-05, Vol.2024 (5), p.65, Article 65
Main Authors: Aidala, C. A., Albrecht, J., Aliouche, Z., Biolchini, A., Blake, T., Breer, N., Buchanan, E., Casais Vidal, A., Castro Godinez, J., Chadwick, A. J., Chen, C., Cifra, P., Closier, J., Cooke, N., De Angelis, C., De Capua, S., Didenko, S., Durham, J. M., Egorychev, V., Elashri, M., Fiorini, M., Fitzgerald, D. S., Foreman, L. F., Franzoso, E., Garcia Martin, L. M., Gibson, V., Gioventù, A., Gong, G., Guarise, M., Halvorsen, M. M., Hamilton, P. M., He, J., Hemmer, F., Henry, L., Herrero Gascon, P., Hill, D., Karacson, M., Kautz, J. W., Khanji, B., Korolev, M., Kostiuk, I., Krokovny, P., Krzemien, W., Kucharczyk, M., Kulikova, E., Lacarrere, D., Lampis, A., Latham, T., Lazzari, F., Li, A., Li, Y., Liu, G., Luo, Y., Machefert, F., Malecki, B., Mancuso, C., Martellotti, G., Mauri, A., Minotti, A., Miralles, T., Morgenthaler, M. P., Morris, A. G., Muhammad, E., Nanut, T., Normand, C., Nur, H. N., Pappagallo, M., Pastore, A., Patel, M., Patrignani, C., Polukhina, N., Resmi, P. K., Ricart, G. R., Richardson-Slipper, M., Rodrigues, E., Rodriguez Rodriguez, E., Roy, S. R., Saitta, B., Santamarina Rios, C., Saranin, D., Sarti, A., Satriano, C., Sazak, H., Scarabotto, A., Scherl, S., Schiller, M., Senger, T., Seuthe, A., Sun, J., Uecker, L. H., van Veghel, M., Vecchi, S., Voropaev, N., Vouters, G., Wang, M., Wang, R., Westhenry, B. D. C., Xu, M., Yang, D., Yu, J.
Format: Article
Language:English
Subjects:
Asymmetry
Atoms & subatomic particles
Classical and Quantum Gravitation
Collaboration
Elementary Particles
Large Hadron Collider
Luminosity
Physics
Physics and Astronomy
Protons
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Quarks
Regular Article - Experimental Physics
Relativity Theory
Sensors
Software
String Theory
Uncertainty
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Summary:A bstract The ratio of branching fractions between B 0 → J/ψπ 0 and B + → J/ψK *+ decays is measured with proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb − 1 . The measured value is B B 0 → J / ψ π 0 B B + → J / ψ K ∗ + = 1.153 ± 0.053 ± 0.048 × 10 − 2 , where the first uncertainty is statistical and the second is systematic. The branching fraction for B 0 → J/ψπ 0 decays is determined using the branching fraction of the normalisation channel, resulting in B B 0 → J / ψ π 0 = 1.670 ± 0.077 ± 0.069 ± 0.095 × 10 − 5 , where the last uncertainty corresponds to that of the external input. This result is consistent with the current world average value and competitive with the most precise single measurement to date.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP05(2024)065