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Adeva, B; Audurier, B; Bay, A; Bel, L J; Benson, S; Berezhnoy, A; Bieker, M S; Bjørn, M; Boente Garcia, O; Bursche, A; Cadeddu, S; Calabrese, R; Campora Perez, D H; Cattaneo, M; Chefdeville, M; Costa Sobral, C M; Dall'Occo, E; De Cian, M; De Miranda, J M; De Serio, M; Dembinski, H-P; Dendek, A; Dufour, L; Dzhelyadin, R; Eidelman, S; Ely, S; Ene, A; Falabella, A; Ferreira Lopes, L; Frei, C; Gizdov, K; Gorelov, I V; Grabowski, J P; Guth, A; Hadjivasiliou, C; Haen, C; Han, X; Harnew, N; Hidalgo Charman, R; Karacson, M; Kim, K E; Klimkovich, T; Kopecna, R; Kvaratskheliya, T; Lesiak, T; Lindner, R; Luppi, E; Maisuzenko, D; Malde, S; Malecki, B; Maltsev, T; Marangotto, D; Marchand, J F; Mathe, Z; McCann, M; Mogini, A; Mombächer, T; Morgunova, O; Mulder, M; Nakada, T; Obraztsov, V; Pais, P R; Parkes, C; Patel, M; Petruzzo, M; Pisani, F; Piucci, A; Placinta, V; Poli Lener, M; Qian, W; Qin, J; Raab, N V; Rademacker, J H; Ravonel Salzgeber, M; Ren, Z; Rodrigues, A B; Rollings, A; Ruf, T; Saitta, B; Schmelling, M; Schune, M H; Sciubba, A; Sergi, A; Seuthe, A; Shmanin, E; Simone, S; Spradlin, P; Stahl, M; Stahl, S; Tonelli, D; Vagnoni, V; Valassi, A; Vazquez Gomez, R; Velthuis, J J; Volkov, V; Williams, I; Williams, M R J; Yang, Z; Yushchenko, O; Zucchelli, S
Physical review letters, 12/2019, Letnik: 123, Številka: 23Journal Article
The first amplitude analysis of the B^{±}→π^{±}K^{+}K^{-} decay is reported based on a data sample corresponding to an integrated luminosity of 3.0 fb^{-1} of pp collisions recorded in 2011 and 2012 with the LHCb detector. The data are found to be best described by a coherent sum of five resonant structures plus a nonresonant component and a contribution from ππ↔KK S-wave rescattering. The dominant contributions in the π^{±} K^{∓} and K^{+} K^{-} systems are the nonresonant and the B^{±}→ρ(1450)^{0}π^{±} amplitudes, respectively, with fit fractions around 30%. For the rescattering contribution, a sizable fit fraction is observed. This component has the largest CP asymmetry reported to date for a single amplitude of (-66±4±2)%, where the first uncertainty is statistical and the second systematic. No significant CP violation is observed in the other contributions.
