Szczegóły publikacji
Opis bibliograficzny
Amplitude analysis of the $D^{+} \to \pi^{−}\pi^{+}\pi^{+}$ decay and measurement of the $\pi^{−}\pi^{+}$ S-wave amplitude / R. Aaij, [et al.], M. FIRLEJ, [et al.], T. FIUTOWSKI, [et al.], M. IDZIK, [et al.], P. KOPCIEWICZ, [et al.], W. KRUPA, [et al.], W. KUCEWICZ, [et al.], M. W. MAJEWSKI, [et al.], J. MOROŃ, [et al.], A. OBŁĄKOWSKA-MUCHA, [et al.], B. RACHWAŁ, [et al.], J. RYŻKA, [et al.], K. ŚWIENTEK, [et al.], T. SZUMLAK, [et al.] // The Journal of High Energy Physics [Dokument elektroniczny]. — Czasopismo elektroniczne ; ISSN 1029-8479. — 2023 — iss. 6 art. no. 44, s. [1], 1–27. — Wymagania systemowe: Adobe Reader. — Bibliogr. s. 17–20, Abstr. — Publikacja dostępna online od: 2023-06-09. — W. Kucewicz - dod. afiliacja: Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków
Autorzy (1044)
Słowa kluczowe
Dane bibliometryczne
ID BaDAP | 149164 |
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Data dodania do BaDAP | 2023-11-28 |
Tekst źródłowy | URL |
DOI | 10.1007/JHEP06(2023)044 |
Rok publikacji | 2023 |
Typ publikacji | artykuł w czasopiśmie |
Otwarty dostęp | |
Creative Commons | |
Czasopismo/seria | The Journal of High Energy Physics |
Abstract
An 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)0 π + and f 2(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.