Results 21 to 30 of about 2,581,998 (352)
Compositeness of
Physical Review C, 2023 The compositeness of weakly bound states is discussed using the effective field theory from the viewpoint of the low-energy universality. We introduce a model with coupling of the single-channel scattering to the bare state, and study the compositeness ...
Tomona Kinugawa, T. Hyodo
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Compositeness of S-wave weakly-bound states from next-to-leading order Weinberg’s relations [PDF]
The European Physical Journal C, 2022 We discuss a model-independent estimator of the likelihood of the compositeness of a shallow S-wave bound or virtual state. The approach is based on an extension of Weinberg’s relations in Weinberg (Phys Rev 137:B672, 1965) and it relies only on the ...
M. Albaladejo, J. Nieves
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Generalization of Weinberg’s compositeness relations [PDF]
Physical Review D, 2021 We generalize the time-honored Weinberg’s compositeness relations by including the range corrections through considering a general form factor. In Weinberg’s derivation, he considered the effective range expansion up to O ( p 2 ) and made two additional ...
Yan Li, F. Guo, Jin-Yi Pang, Jia-Jun Wu
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Evolution of genuine states to molecular ones: The Tcc(3875) case
Physics Letters B, 2023 We address the issue of the compositeness of hadronic states and demonstrate that starting with a genuine state of nonmolecular nature, but which couples to some meson-meson component to be observable in that channel, if that state is blamed for a bound ...
L.R. Dai, J. Song, E. Oset
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Methods on compositeness and related aspects [PDF]
EPJ Web of Conferences, 2022 In many physical applications, bound states and/or resonances are observed, which raises the question whether these states are elementary or composite.
Oller José Antonio
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Electroweak precision tests of composite Higgs models
Journal of High Energy Physics, 2023 We study constraints on Composite Higgs models with fermion partial compositeness from electroweak precision measurements, including the 2022 W-boson mass result from the CDF collaboration.
Mads T. Frandsen, Martin Rosenlyst
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Electroweak top couplings, partial compositeness, and top partner searches [PDF]
Physical Review D, 2020 Partial top quark compositeness is a crucial aspect of theories with strong electroweak symmetry breaking. Together with the heavy top partners that lift the top quark mass to its observed value, these theories predict correlated modifications of the top
Stephen Brown +3 more
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Erkenntnis, 2022 AbstractThe thesis of Weak Unrestricted Composition says that every pair of objects has a fusion. This thesis has been argued by Contessa (Analysis 72(3):455–457, 2012) and Smith (Erkenntnis 84(1):41–55, 2019) to be compatible with the world being junky and hence to evade an argument against the necessity of Strong Unrestricted Composition proposed by ...
Lisa Vogt, Jonas Werner
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European Physical Journal C: Particles and Fields, 2023 We present a lattice study of the SU(4) gauge theory with two Dirac fermions in the fundamental and two in the two-index antisymmetric representation, a model close to a theory of partial compositeness proposed by G. Ferretti.
Luigi Del Debbio +3 more
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Partial compositeness and baryon matrix elements on the lattice [PDF]
Physical Review D, 2018 Partial compositeness is a mechanism for the generation of fermion masses which replaces a direct Higgs coupling to the fermions by a linear mixing with heavy composite partners.
V. Ayyar +6 more
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