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Abstract / Description of output
n amplitude analysis of the D+ → π−π+π+ decay is performed with a sample
corresponding to 1.5 fb−1 of integrated luminosity of pp collisions at a centre-of-mass energy √s = 8 TeV collected by the LHCb detector in 2012. The sample contains approximately six hundred thousand candidates with a signal purity of 95%. The resonant structure is studied through a fit to the Dalitz plot where the π−π+ S-wave amplitude is extracted as a function of π−π+ mass, and spin-1 and spin-2 resonances are included coherently through an isobar model. The S-wave component is found to be dominant, followed by the ρ(770)0π+ and
f2(1270)π+ components. A small contribution from the ω(782) → π−π+ decay is seen for the first time in the D+ → π−π+π+ decay.
corresponding to 1.5 fb−1 of integrated luminosity of pp collisions at a centre-of-mass energy √s = 8 TeV collected by the LHCb detector in 2012. The sample contains approximately six hundred thousand candidates with a signal purity of 95%. The resonant structure is studied through a fit to the Dalitz plot where the π−π+ S-wave amplitude is extracted as a function of π−π+ mass, and spin-1 and spin-2 resonances are included coherently through an isobar model. The S-wave component is found to be dominant, followed by the ρ(770)0π+ and
f2(1270)π+ components. A small contribution from the ω(782) → π−π+ decay is seen for the first time in the D+ → π−π+π+ decay.
| Original language | English |
|---|---|
| Article number | 44 |
| Pages (from-to) | 1-27 |
| Number of pages | 27 |
| Journal | Journal of High Energy Physics |
| Volume | 2023 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 9 Jun 2023 |
Keywords / Materials (for Non-textual outputs)
- Charm Physics
- Hadron-Hadron Scattering
- Particle and Resonance Production