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Aaij, R; Artuso, M; Baesso, C; Barter, W; Ben-Haim, E; Bjørn, M; Bursche, A; Byczynski, W; Cardinale, R; Cardini, A; Carson, L; Casse, G; Charles, M; Chen, S; Coquereau, S; De Capua, S; De Paula, L; Dembinski, H-P; Dijkstra, H; Dordei, F; Durham, J M; Eidelman, S; Eitschberger, U; Ely, S; Evans, T; Ferrari, F; Fitzpatrick, C; Fontanelli, F; Fu, J; Gambetta, S; Hatch, M; Heinicke, K; Idzik, M; Jacobsson, R; Jiang, F; Ketel, T; Kirn, T; Lanfranchi, G; Lefrançois, J; Lemaitre, F; Leverington, B; Lopes, J H; Lucchesi, D; Lupato, A; Luppi, E; Maddrell-Mander, S; Malde, S; Mancinelli, G; Marchand, J F; Minzoni, L; Moron, J; Muheim, F; Nandakumar, R; Nasteva, I; Neri, N; Nguyen, T D; O'Hanlon, D P; Ogilvy, S; Palutan, M; Pepe Altarelli, M; Pescatore, L; Petruzzo, M; Pikies, M; Polycarpo, E; Ponce, S; Poslavskii, S; Prouve, C; Pullen, H; Qin, J; Quagliani, R; Redi, F; Rihl, M; Ruiz Valls, P; Sanchez Mayordomo, C; Sanmartin Sedes, B; Satriano, C; Savrina, D; Schellenberg, M; Schneider, O; Seyfert, P; Silva Coutinho, R; Silva de Oliveira, L; Skidmore, N; Skwarnicki, T; Smith, I T; Spradlin, P; Stagni, F; Stahl, M; Stahl, S; Stone, S; Sun, L; Szumlak, T; Ustyuzhanin, A; Vazquez Gomez, R; Veltri, M; Viana Barbosa, J V; Voneki, B; Wicht, J; Yuan, X; Zhelezov, A
The European physical journal. C, Particles and fields, 2018, Letnik: 78, Številka: 6Journal Article
Amplitude models are constructed to describe the resonance structure of and decays using collision data collected at centre-of-mass energies of 7 and 8 TeV with the LHCb experiment, corresponding to an integrated luminosity of 3.0 . The largest contributions to both decay amplitudes are found to come from axial resonances, with decay modes and being prominent in and , respectively. Precise measurements of the lineshape parameters and couplings of the , and resonances are made, and a quasi model-independent study of the resonance is performed. The coherence factor of the decays is calculated from the amplitude models to be , which is consistent with direct measurements. These models will be useful in future measurements of the unitary-triangle angle and studies of charm mixing and violation.
