RT Journal Article T1 Equivalence of three-particle scattering formalisms A1 Jackura, A. A1 Dawid, S. M. A1 Fernández Ramírez, C. A1 Mathieu, Vincent A1 Mikhasenko, M. A1 Pilloni, A. A1 Sharpe, S. R. A1 Szczepaniak, A. P. AB In recent years, different on-shell 3 → 3 scattering formalisms have been proposed to be applied to both lattice QCD and infinite-volume scattering processes. We prove that the formulation in the infinite volume presented by Hansen and Sharpe in [M. T. Hansen and S. R. Sharpe, Phys. Rev. D 92, 114509 (2015).] and subsequently Briceño et al. in [R. A. Briceño, M. T. Hansen, and S. R. Sharpe, Phys. Rev. D 95, 074510 (2017).] can be recovered from the B -matrix representation, derived on the basis of S -matrix unitarity, presented by Mai et al. in [M. Mai, B. Hu, M. Döring, A. Pilloni, and A. Szczepaniak, Eur. Phys. J. A 53, 177 (2017).] and Jackura et al. in [A. Jackura, C. Fernández-Ramírez, V. Mathieu, M. Mikhasenko, J. Nys, A. Pilloni, K. Saldaña, N. Sherrill, and A. P. Szczepaniak (JPAC Collaboration), Eur. Phys. J. C 79, 56 (2019).] Therefore, both formalisms in the infinite volume are equivalent and the physical content is identical. Additionally, the Faddeev equations are recovered in the nonrelativistic limit of both representations. PB Springer SN 2470-0010 YR 2019 FD 2019-08-13 LK https://hdl.handle.net/20.500.14352/12875 UL https://hdl.handle.net/20.500.14352/12875 LA eng NO U.S. Department of Energy NO U.S. National Science Foundation NO CONACYT (Mexico) DS Docta Complutense RD 18 jul 2024