Please use this identifier to cite or link to this item:
https://hdl.handle.net/2445/174766
Title: | Amplitude analysis of the B+ -> pi(+)pi(+)pi(-) decay |
Author: | Alfonso Albero, Alejandro Calvo Gómez, Míriam Camboni, Alessandro Coquereau, Samuel Garrido Beltrán, Lluís Gascón Fora, David Gironella Gironell, Pere Graciani Díaz, Ricardo Graugés Pous, Eugeni Vilasis-Cardona, Xavier LHCb Collaboration |
Keywords: | Gran Col·lisionador d'Hadrons Física de partícules Large Hadron Collider (France and Switzerland) Particle physics |
Issue Date: | 21-Jan-2020 |
Publisher: | American Physical Society |
Abstract: | 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. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.101.012006 |
It is part of: | Physical Review D, 2020, vol. 101, p. 012006 |
URI: | https://hdl.handle.net/2445/174766 |
Related resource: | https://doi.org/10.1103/PhysRevD.101.012006 |
ISSN: | 2470-0010 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) |
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File | Description | Size | Format | |
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706218.pdf | 4.85 MB | Adobe PDF | View/Open |
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