Zobrazeno 1 - 10
of 117
pro vyhledávání: '"J. Ruiz de Elvira"'
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 8, Pp 1-36 (2023)
Abstract We perform a complete calculation of the pion-kaon scattering amplitude in Chiral Perturbation Theory at finite temperature, paying particular attention to the analytic structure of the amplitude and the main differences with respect to the
Externí odkaz:
https://doaj.org/article/a7cb3a5d70b1445daa1eb0fc7f138e39
Autor:
V. Burkert, V. Crede, E. Klempt, K.V. Nikonov, J.A. Oller, J.R. Peláez, J. Ruiz de Elvira, A. Sarantsev, L. Tiator, U. Thoma, R. Workman
Publikováno v:
Physics Letters B, Vol 844, Iss , Pp 138070- (2023)
Branching ratios for the decay of hadrons with large width or near thresholds depend on their definition. We test different definitions and show that rather different branching ratios can be obtained. For wide resonances and for sequential decays wit
Externí odkaz:
https://doaj.org/article/201f820544024c14ad959feca89d10bd
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 81, Iss 7, Pp 1-9 (2021)
Abstract We use recently derived Ward identities and lattice data for the light- and strange-quark condensates to reconstruct the scalar and pseudoscalar susceptibilities ( $$\chi _S^\kappa $$ χ S κ , $$\chi _P^K$$ χ P K ) in the isospin 1/2 chann
Externí odkaz:
https://doaj.org/article/9f240e9d51f241f5acaee5a984b2f613
Autor:
R. Molina, J. Ruiz de Elvira
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 11, Pp 1-74 (2020)
Abstract Recent lattice data on ππ-scattering phase shifts in the vector-isovector channel, pseudoscalar meson masses and decay constants for strange-quark masses smaller or equal to the physical value allow us to study the strangeness dependence o
Externí odkaz:
https://doaj.org/article/820f170c16274e1d809b64a810c1f52c
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 79, Iss 12, Pp 1-18 (2019)
Abstract We provide global parameterizations of $$\pi \pi \rightarrow \pi \pi $$ ππ→ππ scattering S0 and P partial waves up to roughly 2 GeV for phenomenological use. These parameterizations describe the output and uncertainties of previous par
Externí odkaz:
https://doaj.org/article/54641776fa9b4396b0337d6afa06cc1b
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 11, Pp 1-31 (2019)
Abstract We analyze the contribution of the η′ (958) meson in the first two non-trivial moments of the QCD topological charge distribution, namely, the topological susceptibility and the fourth-order cumulant of the vacuum energy density. We perfo
Externí odkaz:
https://doaj.org/article/c244f4e85db84bc29afbd57c3238fcdf
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 77, Iss 10, Pp 1-13 (2017)
Abstract The generalization of the Feynman–Hellmann theorem for resonance states in quantum field theory is derived. On the basis of this theorem, a criterion is proposed to study the possible exotic nature of certain hadronic states emerging in QC
Externí odkaz:
https://doaj.org/article/63d74ba723264f36ad23074bb984a1e5
Autor:
D. Siemens, J. Ruiz de Elvira, E. Epelbaum, M. Hoferichter, H. Krebs, B. Kubis, U.-G. Meißner
Publikováno v:
Physics Letters B, Vol 770, Iss C, Pp 27-34 (2017)
Heavy-baryon chiral perturbation theory (ChPT) at one loop fails in relating the pion–nucleon amplitude in the physical region and for subthreshold kinematics due to loop effects enhanced by large low-energy constants. Studying the chiral convergen
Externí odkaz:
https://doaj.org/article/92ad0f5caee24e629fef92b7c2b8abe0
Publikováno v:
Physical Review Letters. 130
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3ea9b852b8fcfa6a4ab8e7f36991e636
https://doi.org/10.1103/physrevlett.130.051902
https://doi.org/10.1103/physrevlett.130.051902
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.