Results 11 to 20 of about 2,581,998 (352)
Symmetry, 2022 Nearly 60 years ago, Weinberg suggested a criterion for particle “compositeness”, which has acquired a new life with the discovery of new, exotic hadrons. His idea resonates with model-based intuition.
Ubirajara van Kolck
semanticscholar +4 more sources
Effective-range-expansion study of near threshold heavy-flavor resonances
Advances in High Energy Physics, 2019 In this work we study the resonances near the thresholds of the open heavy-flavor hadrons using the effective-range-expansion method. The unitarity, analyticity and compositeness coefficient are also taken into account in our theoretical formalism.
Gao, Rui +3 more
core +2 more sources
EFTs meet Higgs nonlinearity, compositeness and (neutral) naturalness [PDF]
Journal of High Energy Physics, 2019 Composite Higgs and neutral-naturalness models are popular scenarios in which the Higgs boson is a pseudo Nambu-Goldstone boson (PNGB), and naturalness problem is addressed by composite top partners. Since the standard model effective field theory (SMEFT)
Hao-Lin Li +3 more
doaj +2 more sources
$g_\mu-2$ from Vector-Like Leptons in Warped Space
Journal of High Energy Physics, 2017 The experimental value of the anomalous magnetic moment of the muon, as well as the LHCb anomalies, point towards new physics coupled non-universally to muons and electrons.
Megias, Eugenio +2 more
core +3 more sources
Constraint on K Kbar compositeness of the a0(980) and f0(980) resonances from their mixing intensity [PDF]
, 2015 Structure of the $a_{0}(980)$ and $f_{0}(980)$ resonances is investigated with the $a_{0}(980)$-$f_{0}(980)$ mixing intensity from the viewpoint of compositeness, which corresponds to the amount of two-body states composing resonances as well as bound ...
Kumano, S., Sekihara, T.
core +2 more sources
Probing compositeness with the CMS eejj & eej data [PDF]
Physics Letters B, 2016 Quark-lepton compositeness is a well-known beyond the Standard Model (SM) scenario with heavy exotic particles like leptoquarks (LQs) and leptogluons (LGs) etc. These particles can couple to leptons and jets simultaneously.
Tanumoy Mandal +2 more
doaj +2 more sources
Anarchic Yukawas and top partial compositeness: the flavour of a successful marriage [PDF]
, 2015 The top quark can be naturally singled out from other fermions in the Standard Model due to its large mass, of the order of the electroweak scale. We follow this reasoning in models of pseudo Nambu Goldstone Boson composite Higgs, which may derive from ...
Cacciapaglia, Giacomo +5 more
core +4 more sources
Estimation of compositeness with correction terms [PDF]
EPJ Web of Conferences, 2022 The compositeness X is defined as the probability to observe the composite structure such as the hadronic molecule component in a bound state. One of the model-independent approaches to calculate X is the weak-binding relation.
Kinugawa Tomona, Hyodo Tetsuo
doaj +1 more source
Sp(4) gauge theories and beyond the standard model physics [PDF]
EPJ Web of Conferences, 2022 We review numerical results for models with gauge group Sp(2N), discussing the glueball spectrum in the large-N limit, the quenched meson spectrum of Sp(4) with Dirac fermions in the fundamental and in the antisymmetric representation and the Sp(4) gauge
Lucini Biagio +9 more
doaj +1 more source
How much is the compositeness of a bound state constrained by a and $$r_0$$? The role of the interaction range [PDF]
European Physical Journal A, 2022 We present an approach that allows one to obtain information on the compositeness of molecular states from combined information of the scattering length of the hadronic components, the effective range, and the binding energy.
Jing Song, L.R.Dai, E.Oset
semanticscholar +1 more source