RT Journal Article
T1 Studies of the resonance structure in D0→K∓π±π±π∓ decays
A1 LHCb Collaboration, 
A1 Adeva Andany, Bernardo
A1 Alves Junior, Antonio Augusto
A1 Boente García, Óscar
A1 Borsato, Martino
A1 Chobanova, Veronika
A1 Cid Vidal, Xabier
A1 Dosil Suárez, Álvaro
A1 Fernández Prieto, Antonio
A1 Gallas Torreira, Abraham Antonio
A1 García Plana, Beatriz
A1 Lucio Martínez, Miriam
A1 Martínez Santos, Diego
A1 Plo Casasus, Máximo
A1 Prisciandaro, James J.
A1 Ramos Pernas, Miguel
A1 Romero Vidal, Antonio
A1 Saborido Silva, Juan José
A1 Sanmartín Sedes, Brais
A1 Santamarina Ríos, Cibrán
A1 Vázquez Regueiro, Pablo
A1 Vieites Díaz, María
AB Amplitude models are constructed to describethe resonance structure of D0 → K−π+π+π− and D0 →K+π−π−π+ decays using pp collision data collected atcentre-of-mass energies of 7 and 8 TeV with the LHCbexperiment, corresponding to an integrated luminosity of3.0 f b−1. The largest contributions to both decay amplitudesare found to come from axial resonances, with decay modesD0 → a1(1260)+K− and D0 → K1(1270/1400)+π−being prominent in D0 → K−π+π+π− and D0 →K+π−π−π+, respectively. Precise measurements of thelineshape parameters and couplings of the a1(1260)+,K1(1270)− and K(1460)− resonances are made, and a quasimodel-independent study of the K(1460)− resonance is performed.The coherence factor of the decays is calculated fromthe amplitude models to be RK3π = 0.459 ± 0.010 (stat) ±0.012 (syst)±0.020 (model), which is consistent with directmeasurements. These models will be useful in future measurementsof the unitary-triangle angle γ and studies ofcharm mixing and CP violation
PB Springer
SN 1434-6044
YR 2018
FD 2018
LK http://hdl.handle.net/10347/22308
UL http://hdl.handle.net/10347/22308
LA eng
NO Aaij, R., Adeva, B., Adinolfi, M. et al. Studies of the resonance structure in D0→K∓π±π±π∓ decays. Eur. Phys. J. C 78, 443 (2018). https://doi.org/10.1140/epjc/s10052-018-5758-4
DS Minerva
RD 28 abr 2026