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Ajaltouni, Z.; Alessio, F.; Artamonov, A.; Balagura, V.; Barlow, R. J.; Batozskaya, V.; Batsukh, B.; Battig, A.; Belavin, V.; Benson, S.; Bhasin, S.; Bizzeti, A.; Blanc, F.; Borisyak, M.; Bowcock, T. J. V.; Buonaura, A.; Burr, C.; Buytaert, J.; Charpentier, Ph; Chen, C.; Chitic, S.-G.; Chubykin, A.; Cid Vidal, X.; Closier, J.; Cogneras, E.; Cojocariu, L.; Contu, A.; Craik, D. C.; Da Silva, C. L.; D’Ambrosio, C.; De Capua, S.; De Miranda, J. M.; De Serio, M.; Demmer, M.; Dendek, A.; Douglas, L.; Dziewiecki, M.; Ferrari, F.; Firlej, M.; Gandelman, M.; Gao, Y.; Garcia Plana, B.; Gaspar, C.; Gerick, D.; Gershon, T.; Golubkov, D.; Harnew, N.; Hatch, M.; Henry, L.; Huard, Z. C.; Hushchyn, M.; Jurik, N.; Keizer, F.; Klaver, S.; Li, H.; Li, X.; Loh, D.; Malde, S.; Marangotto, D.; Marin Benito, C.; McNab, A.; Merli, A.; Moise, R. D.; Monteil, S.; Mulder, M.; Müller, V.; Naik, P.; Neri, N.; Niet, R.; Nolte, N. S.; Pais, P. R.; Pajero, T.; Patel, M.; Pellegrino, A.; Pescatore, L.; Pinci, D.; Piucci, A.; Ponce, S.; Rangel, M. S.; Redi, F.; Rodrigues, A. B.; Roiser, S.; Saitta, B.; Sanmartin Sedes, B.; Santamarina Rios, C.; Schellenberg, M.; Siddi, B. G.; Teubert, F.; Thomas, E.; Ukleja, A.; Usachov, A.; Ustyuzhanin, A.; van Beuzekom, M.; van Tilburg, J.; Vecchi, S.; Vernet, M.; Witek, M.; Wyllie, K.; Xu, Q.; Zonneveld, J. B.
Physical review. D, 01/2020, Letnik: 101, Številka: 1Journal Article
The results of an amplitude analysis of the charmless three-body decay B+→π+π+π−, in which CP-violation effects are taken into account, are reported. The analysis is based on a data sample corresponding to an integrated luminosity of 3 fb−1 of pp collisions recorded with the LHCb detector. The most challenging aspect of the analysis is the description of the behavior of the π+π− S-wave contribution, which is achieved by using three complementary approaches based on the isobar model, the K-matrix formalism, and a quasi-model-independent procedure. Additional resonant contributions for all three methods are described using a common isobar model, and include the ρ(770)0, ω(782) and ρ(1450)0 resonances in the π+π− P-wave, the f2(1270) resonance in the π+π− D-wave, and the ρ3(1690)0 resonance in the π+π− F-wave. Significant CP-violation effects are observed in both S- and D-waves, as well as in the interference between the S- and P-waves. The results from all three approaches agree and provide new insight into the dynamics and the origin of CP-violation effects in B+→π+π+π− decays.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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