We present an angular analysis of the B+ → K*+ (→ K0S π+) μ+ μ− decay using 9 fb^−1 of pp collision data collected with the LHCb experiment. For the first time, the full set of CP-averaged angular observables is measured in intervals of the dimuon invariant mass squared. Local deviations from standard model predictions are observed, similar to those in previous LHCb analyses of the isospin-partner B0 → K*0 μ+ μ− decay. The global tension is dependent on which effective couplings are considered and on the choice of theory nuisance parameters.

Aaij, R., Abellán Beteta, C., Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., et al. (2021). Angular Analysis of the B+ → K*+ μ+ μ− Decay. PHYSICAL REVIEW LETTERS, 126(16), 1-11 [10.1103/PhysRevLett.126.161802].

Angular Analysis of the B+ → K*+ μ+ μ− Decay

Capriotti, L.;Carbone, A.;Ferrari, F.;Galli, D.;Maccolini, S.;Manuzzi, D.;Patrignani, C.;Pisani, F.;Zucchelli, S.;
2021

Abstract

We present an angular analysis of the B+ → K*+ (→ K0S π+) μ+ μ− decay using 9 fb^−1 of pp collision data collected with the LHCb experiment. For the first time, the full set of CP-averaged angular observables is measured in intervals of the dimuon invariant mass squared. Local deviations from standard model predictions are observed, similar to those in previous LHCb analyses of the isospin-partner B0 → K*0 μ+ μ− decay. The global tension is dependent on which effective couplings are considered and on the choice of theory nuisance parameters.
2021
Aaij, R., Abellán Beteta, C., Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., et al. (2021). Angular Analysis of the B+ → K*+ μ+ μ− Decay. PHYSICAL REVIEW LETTERS, 126(16), 1-11 [10.1103/PhysRevLett.126.161802].
Aaij, R.; Abellán Beteta, C.; Ackernley, T.; Adeva, B.; Adinolfi, M.; Afsharnia, H.; Aidala, C.A.; Aiola, S.; Ajaltouni, Z.; Akar, S.; Albrecht, J.; A...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/848989
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