Angular analysis of the B&lt;sup&gt;0&lt;/sup&gt; → K&lt;sup&gt;⁎&lt;/sup&gt;(892)&lt;sup&gt;0&lt;/sup&gt;μ&lt;sup&gt;+&lt;/sup&gt;μ&lt;sup&gt;−&lt;/sup&gt; decay in proton-proton collisions at &lt;em&gt;√s &lt;/em&gt;= 13TeV

Hayrapetyan, A.; Tumasyan, A.; Adam, W.; Andrejkovic, J.W.; Benato, L.; Bergauer, T.; Chatterjee, S.; Damanakis, K.; Dragicevic, M.; Hussain, P.S.; Bevilacqua, T.; Caminada, L.; Ebrahimi, A.; Erdmann, W.; Horisberger, R.; Ingram, Q.; Kaestli, H.C.; Kotlinski, D.; Lange, C.; Missiroli, M.; Noehte, L.; Rohe, T.; Samalan, A.; Druzhkin, D.

doi:10.1016/j.physletb.2025.139406

Angular analysis of the B⁰ → K^⁎(892)⁰μ⁺μ⁻ decay in proton-proton collisions at √s = 13TeV

Hayrapetyan A, Tumasyan A, Adam W, Andrejkovic JW, Benato L, Bergauer T, Chatterjee S, Damanakis K, Dragicevic M, Hussain PS, Bevilacqua T, Caminada L, Ebrahimi A, Erdmann W, Horisberger R, Ingram Q, Kaestli HC, Kotlinski D, Lange C, Missiroli M, Noehte L, Rohe T, Samalan A, Druzhkin D, et al.

Citation

Hayrapetyan, A., Tumasyan, A., Adam, W., Andrejkovic, J. W., Benato, L., Bergauer, T., … Druzhkin, D. (2025). Angular analysis of the B⁰ → K^⁎(892)⁰μ⁺μ⁻ decay in proton-proton collisions at √s = 13TeV. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 864, 139406 (28 pp.). https://doi.org/10.1016/j.physletb.2025.139406

Persistent URL https://www.dora.lib4ri.ch/psi/islandora/object/psi:69320

A full set of optimized observables is measured in an angular analysis of the decay B⁰→K^⁎(892)⁰μ⁺μ⁻ using a sample of proton-proton collisions at √s=13TeV, collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 140 fb⁻¹. The analysis is performed in six bins of the squared invariant mass of the dimuon system, q², over the range 1.1<q² <16GeV². The results are among the most precise experimental measurements of the angular observables for this decay and are compared to a variety of predictions based on the standard model. Some of these predictions exhibit tension with the measurements.