نتایج جستجو برای: efts
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A bstract Effective Field Theory (EFT) extensions of the Standard Model are tools to compute observables (e.g. cross sections with partonic center-of-mass energy $$ \sqrt{\hat{s}} s ̂ ) as a systematically improvable expansion suppressed by new...
Considered as bound states, heavy quarkonia (e.g. Υ, χb, ψ, χc, ...) have two main characteristics: 1) a mass scale, which is in the perturbative regime: mb ≃ 5 GeV, mc ≃ 1.5 GeV; 2) level splittings of a relative size that is typical of non-relativistic systems. Being non-relativistic bound states, heavy quarkonia are characterized by at least three hierarchically ordered energy scales: the ha...
Lattice quantum chromodynamics (LQCD) has the promise of constraining low-energy constants (LECs) nuclear effective field theories (EFTs) from first-principles calculations that incorporate dynamics quarks and gluons. Given Euclidean finite-volume nature LQCD outputs, complex mappings are developed in recent years to obtain Minkowski infinite-volume counterparts observables. In particular, as i...
The interactions between two octet baryons are studied at low energies using lattice quantum chromodynamics (LQCD) with larger-than-physical quark masses corresponding to a pion mass of ${m}_{\ensuremath{\pi}}\ensuremath{\sim}450\text{ }\text{ }\mathrm{MeV}$ and kaon ${m}_{K}\ensuremath{\sim}596\text{ }\mathrm{MeV}$. two-baryon systems that analyzed range from strangeness $S=0$ $S=\ensuremath{-...
The terrestrial red eft stage is so different from the body form of the aquatic adult of the eastern newt that the two were considered separate species for nearly 60 years. Some populations lack the eft stage whereas in other populations the adults are aquatic only during the breeding season. In populations in which the adults are permanently aquatic or migrate to breeding ponds in fall, an aut...
Mutations in several mitochondrial DNA and nuclear genes involved in mitochondrial protein synthesis have recently been reported in combined respiratory chain deficiency, indicating a generalized defect in mitochondrial translation. However, the number of patients with pathogenic mutations is small, implying that nuclear defects of mitochondrial translation are either underdiagnosed or intraute...
چکیده ندارد.
The electroweak symmetry-breaking sector is one of the most promising and uncharted parts Standard Model (SM); but it seems likely that new physics may be out reach present accelerator effort hope to observe small deviations from SM. Given that, effective field theory (EFT) becomes logic method use, (SMEFT) has become standard. However, general with known particle content Higgs (HEFT), whether ...
Among small blue round cell tumors, primitive neuroectodermal tumors (PNETs) are a group of Ewing sarcoma family of tumors that are highly aggressive, poorly differentiated and form a group of tumors defined by their appearance that are thought to derive from postganglionic parasympathetic primordial cells located throughout the parasympathetic autonomic nervous system. Batsakis et al divided P...
Heavy quarkonium decays and transitions are discussed in the framework of nonrelativistic effective field theories. Emphasis is put on the matching procedure in the nonperturbative regime. Some exact results valid for the magnetic dipole couplings are discussed. INTRODUCTION In the last years the B factories, CLEO and BES have produced a large amount of new data for heavy quarkonium observables...
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