Szczegóły publikacji
Opis bibliograficzny
Studying $\pi^+ \pi^-$ photoproduction beyond Pomeron exchange / Łukasz BIBRZYCKI, Nadine Hammoud, Vincent Mathieu, Robert J. Perry, Alex Akridge, César Fernández-Ramírez, Gloria Montaña, Alessandro Pilloni, Arkaitz Rodas, Vanamali Shastry, Wyatt A. Smith, Daniel Winney, Adam P. Szczepaniak // Physical Review. D ; ISSN 2470-0010. — Tytuł poprz.: Physical Review D. Particles, fields, gravitation, and cosmology ; ISSN: 1550-7998. — 2025 — vol. 111 iss. 1 art. no.014002, s. 014002-1–014002-32. — Bibliogr. s. 014002-32, Abstr. — Publikacja dostępna online od: 2025-01-07
Autorzy (13)
- AGHBibrzycki Łukasz
- Hammoud Nadine
- Mathieu Vincent
- Perry Robert J.
- Akridge Alex
- Fernández-Ramírez Cesar
- Montaña Glòria
- Pilloni Alessandro
- Rodas Arkaitz
- Shastry Vanamali
- Smith Wyatt A.
- Winney Daniel
- Szczepaniak Adam P.
Dane bibliometryczne
| ID BaDAP | 157779 |
|---|---|
| Data dodania do BaDAP | 2025-02-19 |
| Tekst źródłowy | URL |
| DOI | 10.1103/PhysRevD.111.014002 |
| Rok publikacji | 2025 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Physical Review, D |
Abstract
Forward photoproduction of π+π- pairs with invariant mass of the order of mρ∼770 MeV is traditionally attributed to Pomeron exchange. Based on a detailed analysis of the CEBAF Large Acceptance Spectrometer photoproduction data collected at photon energies below 4 GeV, it is shown from a study of the angular moments that the dynamics of two-pion photoproduction for |t|≳0.5 GeV2 cannot be explained by Pomeron exchange alone. This motivates the development of a new theoretical model of two-pion photoproduction which incorporates both two-pion and pion-nucleon resonant contributions. After fitting free parameters, the model provides an excellent description of the low moments of the angular distribution measured at CLAS and enables an assessment of the relative contributions of particular production mechanisms and an interpretation of the various features of the data in terms of these mechanisms. © 2025 authors. Published by the American Physical Society.
