Zobrazeno 1 - 10
of 216
pro vyhledávání: '"Stephen R, Sharpe"'
Autor:
Zachary T. Draper, Stephen R. Sharpe
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 7, Pp 1-48 (2024)
Abstract We generalize previous three-particle finite-volume formalisms to allow for multiple three-particle channels. For definiteness, we focus on the two-channel ηππ and K K ¯ π $$ K\overline{K}\pi $$ system in isosymmetric QCD, considering t
Externí odkaz:
https://doaj.org/article/584b3c491fe64e1a9320efac36cdbb47
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 6, Pp 1-56 (2024)
Abstract We generalize the relativistic field-theoretic three-particle finite-volume scattering formalism to describe generic DDπ systems in the charm C = 2 sector. This includes the isospin-0 channel, in which the recently discovered doubly-charmed
Externí odkaz:
https://doaj.org/article/331dad9970e64dc6ac2717badf56479e
Autor:
Jorge Baeza-Ballesteros, Johan Bijnens, Tomáš Husek, Fernando Romero-López, Stephen R. Sharpe, Mattias Sjö
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 3, Pp 1-43 (2024)
Abstract The three-particle K-matrix, K $$ \mathcal{K} $$ df,3, is a scheme-dependent quantity that parametrizes short-range three-particle interactions in the relativistic-field-theory three-particle finite-volume formalism. In this work, we compute
Externí odkaz:
https://doaj.org/article/adc00881d95c438a83a5a5eefb7615a7
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 7, Pp 1-47 (2023)
Abstract We generalize the relativistic field-theoretic (RFT) three-particle finite-volume formalism to systems of three identical, massive, spin-1/2 fermions, such as three neutrons. This allows, in principle, for the determination of the three-neut
Externí odkaz:
https://doaj.org/article/d3804e8817474a7f87fbeb4eccaa0d59
Autor:
Jorge Baeza-Ballesteros, Johan Bijnens, Tomáš Husek, Fernando Romero-López, Stephen R. Sharpe, Mattias Sjö
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 5, Pp 1-56 (2023)
Abstract The three-particle K-matrix, K df , 3 $$ {\mathcal{K}}_{\textrm{df},3} $$ , is a scheme-dependent quantity that parametrizes short-range three-particle interactions in the relativistic-field-theory three-particle finite-volume formalism. In
Externí odkaz:
https://doaj.org/article/622a4f091a1c4dfab226a7e3bce595fd
Autor:
Zachary T. Draper, Andrew D. Hanlon, Ben Hörz, Colin Morningstar, Fernando Romero-López, Stephen R. Sharpe
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 5, Pp 1-65 (2023)
Abstract We study the interactions of systems of two and three nondegenerate mesons composed of pions and kaons at maximal isospin using lattice QCD, specifically π + K +, π + π + K + and K + K + π +. Utilizing the stochastic LapH method, we dete
Externí odkaz:
https://doaj.org/article/2db8f3f746e2435dbf74d8022e93f863
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 2, Pp 1-49 (2022)
Abstract Recently, the formalism needed to relate the finite-volume spectrum of systems of nondegenerate spinless particles has been derived. In this work we discuss a range of issues that arise when implementing this formalism in practice, provide f
Externí odkaz:
https://doaj.org/article/49563c198dbc4216b6e5bf5e1c153448
Autor:
Tyler D. Blanton, Andrew D. Hanlon, Ben Hörz, Colin Morningstar, Fernando Romero-López, Stephen R. Sharpe
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 10, Pp 1-59 (2021)
Abstract We study two- and three-meson systems composed either of pions or kaons at maximal isospin using Monte Carlo simulations of lattice QCD. Utilizing the stochastic LapH method, we are able to determine hundreds of two- and three-particle energ
Externí odkaz:
https://doaj.org/article/97f4080f63144a80915bcebf0a8fd6e0
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 4, Pp 1-44 (2021)
Abstract We derive relations between finite-volume matrix elements and infinite-volume decay amplitudes, for processes with three spinless, degenerate and either identical or non-identical particles in the final state. This generalizes the Lellouch-L
Externí odkaz:
https://doaj.org/article/4c0e71ebb1ab425cb5b6e50811bacd82
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 7, Pp 1-49 (2020)
Abstract We present a generalization of the relativistic, finite-volume, three-particle quantization condition for non-identical pions in isosymmetric QCD. The resulting formalism allows one to use discrete finite-volume energies, determined using la
Externí odkaz:
https://doaj.org/article/aafb4e9100df40978fc85e6b4774c701