Search for the decay B0 → K0τ+τ- at the Belle experiment

This paper presents a search for the rare flavor-changing neutral current process B0 → K*0τ+τ- using data taken with the Belle detector at the KEKB asymmetric energy e+e- collider. The analysis is based on the entire ϒ ( 4S ) resonance data sample of 711 fb-1 , corresponding to 772×106B B ¯ pairs....

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Veröffentlicht in:	Physical review. D 2023-07, Vol.108 (1)
Hauptverfasser:	Dong, T.V, Luo, T, Adachi, I, Aihara, H, Asner, D.M, Atmacan, H, Aulchenko, V, Aushev, T, Ayad, R, Babu, V, Bahinipati, S, Behera, P, Belous, K, Bernlochner, F, Bessner, M, Bhuyan, B, Bilka, T, Biswal, J, Bobrov, A, Bozek, A, Bračko, M, Branchini, P, Browder, T.E, Budano, A, Campajola, M, Červenkov, D, Chang, M.-C, Chang, P, Chen, A, Cheon, B.G, Chilikin, K, Cho, H.E, Cho, K, Cho, S.-J, Choi, S.-K, Choi, Y, Choudhury, S, Cinabro, D, Cunliffe, S, Czank, T, Das, S, de Nardo, G, de Pietro, G, Dhamija, R, Di Capua, F, Dingfelder, J, Doležal, Z, Dubey, S, Epifanov, D, Ferber, T, Ferlewicz, D, Fulsom, B.G, Garg, R, Gaur, V, Gabyshev, N, Garmash, A, Giri, A, Goldenzweig, P, Graziani, E, Gu, T, Gudkova, K, Hara, T, Hartbrich, O, Hayasaka, K, Hernandez Villanueva, M, Hou, W.-S, Hsu, C.-L, Inami, K, Inguglia, G, Ishikawa, A, Itoh, R, Iwasaki, M, Jacobs, W.W, Jang, E.-J, Jia, S, Jin, Y, Joo, K.K, Kahn, J, Kang, K.H, Kichimi, H, Kiesling, C, Kim, C.H, Kim, D.Y, Kim, S.H, Kim, Y.-K, Kimmel, T.D, Kodyš, P, Konno, T, Korobov, A, Korpar, S, Kovalenko, E, Križan, P, Kroeger, R, Krokovny, P, Kuhr, T, Kulasiri, R, Kumar, M, Kumar, R, Kumara, K, Kuzmin, A
Format:	Artikel
Sprache:	eng
Schlagworte:	Bottom mesons Branching fraction Flavor changing neutral currents Flavor symmetries High Energy Physics - Experiment Lepton colliders Leptonic, semileptonic & radiative decays MATERIALS SCIENCE Particle decays Particles & Fields Physics Rare decays
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Beschreibung
Zusammenfassung:	This paper presents a search for the rare flavor-changing neutral current process B0 → K0τ+τ- using data taken with the Belle detector at the KEKB asymmetric energy e+e- collider. The analysis is based on the entire ϒ ( 4S ) resonance data sample of 711 fb-1 , corresponding to 772×106B B ¯ pairs. In our search we fully reconstruct the companion B meson produced in the process e+e- → ϒ ( 4S ) → B B ¯ from its hadronic decay modes, and look for the decay B0 → K0τ+τ- in the rest of the event. No evidence for a signal is found. We report an upper limit on the branching fraction B ( B0 → K*0τ+τ- )
ISSN:	2470-0010 2470-0029
DOI:	10.1103/PhysRevD.108.L011102