Amplitude analysis of the B+→π+π+π−decay
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...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
21 January 2020
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| In: |
Physical review
Year: 2020, Jahrgang: 101, Heft: 1 |
| ISSN: | 2470-0029 |
| DOI: | 10.1103/PhysRevD.101.012006 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevD.101.012006 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.101.012006 
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| Verfasserangaben: | LHCb Collaboration, R. Aaij, [und 872 weitere Personen] |
MARC
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| 245 | 1 | 0 | |a Amplitude analysis of the B+→π+π+π−decay |c LHCb Collaboration, R. Aaij, [und 872 weitere Personen] |
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| 246 | 3 | 3 | |a Amplitude analysis of B plus into [pi] plus [pi] plus [pi] minus decays |
| 264 | 1 | |c 21 January 2020 | |
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| 500 | |a Gesehen am 25.05.2020 | ||
| 520 | |a 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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