Analysis of Λ b 0 → pK − μ + μ − decays

Analysis of Λ b 0 → pK − μ + μ − decays

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The differential branching fraction and angular coefficients of Λb0 → 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....

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Xehetasun bibliografikoak
Egile Nagusiak: 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, KL, 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
Formatua: Journal article
Hizkuntza:English
Argitaratua: Springer 2024
Deskribapena
Gaia:The differential branching fraction and angular coefficients of Λb0 → 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.

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