Determination of short- and long-distance contributions in $B^{0}\to K^{0}\mu^+\mu^-$ decays

• Published in: Physical review. D 2024, Vol.109 (5)
• Main Authors: Aaij, Roel, Abdelmotteleb, Ahmed Sameh Wagih, Abellan Beteta, Carlos, Abudinén, Fernando Jesus, Ackernley, Thomas, Adeva, Bernardo, Adinolfi, Marco, Adlarson, Patrik Harri, Agapopoulou, Christina, Aidala, Christine Angela, Ajaltouni, Ziad, Akar, Simon, Akiba, Kazuyoshi, Albicocco, Pietro, Albrecht, Johannes, Alessio, Federico, Alexander, Michael, Alfonso Albero, Alejandro, Aliouche, Zakariya, Alvarez Cartelle, Paula, Amalric, Renaud, Amato, Sandra, Amey, Jake Lewis, Amhis, Yasmine, An, Liupan, Anderlini, Lucio, Andersson, Martin, Andreianov, Aleksei, Andreola, Pasquale, Andreotti, Mirco, Andreou, Dimitra, Anelli, Alessia, Ao, Dong, Archilli, Flavio, Argenton, Matteo, Arguedas Cuendis, Sergio, Artamonov, Alexander, Artuso, Marina, Aslanides, Elie, Atzeni, Michele, Audurier, Benjamin, Bacher, David, Bachiller Perea, Irene, Bachmann, Sebastian, Bachmayer, Marie, Back, John, Bailly-Reyre, Aurelien, Baladron Rodriguez, Pablo, Balagura, Vladislav, Baldini, Wander, Baptista de Souza Leite, Juan, Barbetti, Matteo, Barbosa, Ivanildo Rui, Barlow, Roger, Barsuk, Sergey, Barter, William, Bartolini, Matteo, Baryshnikov, Fedor, Basels, Jan-Marc, Bassi, Giovanni, Batsukh, Baasansuren, Battig, Alexander, Bay, Aurelio, Beck, Anja, Becker, Maik, Bedeschi, Franco, Bediaga, Ignacio, Beiter, Andrew, Belin, Samuel, Bellee, Violaine, Belous, Konstantin, Belov, Ilia, Belyaev, Ivan, Benane, Gaya, Bencivenni, Giovanni, Ben-Haim, Eli, Berezhnoy, Alexander, Bernet, Roland, Bernet Andres, Sergi, Bernstein, Harris Conan, Bertella, Claudia, Bertolin, Alessandro, Betancourt, Christopher, Betti, Federico, Bex, Josh, Bezshyiko, Iaroslava, Bhom, Jihyun, Bieker, Martin Stefan, Biesuz, Nicolo Vladi, Billoir, Pierre, Biolchini, Alice, Birch, Matthew, Bishop, Fionn Caitlin Ros, Bitadze, Alexander, Bizzeti, Andrea, Blago, Michele Piero, Blake, Thomas, Blanc, Frederic, Blank, Jonah Evan, Blusk, Steven
• Format: Article
• Language: English
• Subjects: High Energy Physics - Experiment; Physics
• ISSN: 2470-0010; 2470-0029
• DOI: 10.1103/PhysRevD.109.052009

An amplitude analysis of the $B^0 \to K^{*0} \mu^+\mu^-$ decay is presented. The analysis is based on data collected by the LHCb experiment from proton-proton collisions at $\sqrt{s} = 7,\,8$ and $13$ TeV, corresponding to an integrated luminosity of $4.7$ fb$^{-1}$. For the first time, Wilson coefficients and non-local hadronic contributions are accessed directly from the unbinned data, where the latter are parameterised as a function of $q^2$ with a polynomial expansion. Wilson coefficients and non-local hadronic parameters are determined under two alternative hypotheses: the first relies on experimental information alone, while the second one includes information from theoretical predictions for the non-local contributions. Both models obtain similar results for the parameters of interest. The overall level of compatibility with the Standard Model is evaluated to be between 1.8 and 1.9 standard deviations when looking at the $\mathcal{C}_9$ Wilson coefficient alone, and between 1.3 and 1.4 standard deviations when considering the full set of $\mathcal{C}_9, \, \mathcal{C}_{10}, \, \mathcal{C}_9^\prime$ and $\mathcal{C}_{10}^\prime$ Wilson coefficients. The ranges reflect the theoretical assumptions made in the analysis.