Analysis of $$ {\Lambda}_b^0 $$ → pK−μ+μ− decays

Analysis of $$ {\Lambda}_b^0 $$ → pK−μ+μ− decays

The differential branching fraction and angular coefficients of $$ {\Lambda}_b^0 $$ Λ b 0 → pK − μ + μ − decays are measured in bins of the dimuon mass squared and dihadron mass. The analysis is performed using a data set corresponding to 9 fb − 1 of integrated luminosity collected with the LHCb det...

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Veröffentlicht in:The journal of high energy physics 2024-12, Vol.2024 (12), Article 147
Hauptverfasser: Aaij, R., Abdelmotteleb, A. S. W., Abellan Beteta, C., Abudinén, F., Ackernley, T., 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., Alvarez Cartelle, P., Amalric, R., Amato, S., Amey, J. L., Amhis, Y., An, L., Anderlini, L., Andersson, M., Andreianov, A., Andreola, P., Andreotti, M., Andreou, D., Anelli, A., Ao, D., Archilli, F., Argenton, M., Arguedas Cuendis, S., Artamonov, A., Artuso, M., Aslanides, E., Ataíde Da Silva, R., Atzeni, M., Audurier, B., Bacher, D., Bachiller Perea, I., Bachmann, S., Bachmayer, M., Back, J. J., Baladron Rodriguez, P., Balagura, V., Baldini, W., Balzani, L., Bao, H., Baptista de Souza Leite, J., Barbero Pretel, C., Barbetti, M., Barbosa, I. R., Barlow, R. J., Barnyakov, M., Barsuk, S., Barter, W., Bartolini, M., Bartz, J., Basels, J. M., Bashir, S., Bassi, G., Batsukh, B., Battista, P. B., Bay, A., Beck, A., Becker, M., Bedeschi, F., Bediaga, I. B., Behling, N. A., Belin, S., Bellee, V., Belous, K., Belov, I., Belyaev, I., Benane, G., Bencivenni, G., Ben-Haim, E., Berezhnoy, A., Bernet, R., Bernet Andres, S., Bertolin, A., Betancourt, C., Betti, F., Bex, J., Bezshyiko, Ia, Bhom, J., Bieker, M. S., Biesuz, N. V., Billoir, P., Biolchini, A., Birch, M., Bishop, F. C. R., Bitadze, A., Bizzeti, A., Blake, T., Blanc, F.
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Sprache:eng
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Zusammenfassung:The differential branching fraction and angular coefficients of $$ {\Lambda}_b^0 $$ Λ b 0 → pK − μ + μ − decays are measured in bins of the dimuon mass squared and dihadron mass. The analysis is performed using a data set corresponding to 9 fb − 1 of integrated luminosity collected with the LHCb detector between 2011 and 2018. The data are consistent with receiving contributions from a mixture of Λ resonances with different spin-parity quantum numbers. The angular coefficients show a pattern of vector-axial vector interference that is a characteristic of the type of flavour-changing neutral-current transition relevant for these decays.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP12(2024)147