نتایج جستجو برای: λ symmetry
تعداد نتایج: 112133 فیلتر نتایج به سال:
Recent data of two-body nonleptonic B meson decays allow a topological-amplitude analysis up to the O(λ2) accuracy, where λ denotes the Wolfenstein parameter. We find an exact solution from the B → ππ data and an exact solution from the B → Kπ data, which satisfy the approximate SU(3) flavor symmetry. These solutions indicate that the color-suppressed tree amplitude is large, all other amplitud...
Recent data of two-body nonleptonic B meson decays allow a topological-amplitude analysis up to the O(λ2) accuracy, where λ denotes the Wolfenstein parameter. We find an exact solution from the B → ππ data and an exact solution from the B → Kπ data, which satisfy the approximate SU(3) flavor symmetry. These solutions indicate that the color-suppressed tree amplitude is large, all other amplitud...
To understand the mechanism of charge symmetry breaking between 4 Λ H and He, we plan to measure gamma-transition energy (1 + → 0 ) with a Ge detector array. For identification hypernucleus, will perform triple coincidence reaction, γ -ray, weak decay for first time. We pion from range counter. This method enable -ray spectroscopy various hyperfragments which cannot be directly produced by ( K ...
We analyze the neutron electric dipole moment (EDM) in the Minimal Supersymmetric Model with explicit R-parity violating terms. The leading contribution to the EDM occurs at the 2-loop level and is dominated by the chromoelectric dipole moments of quarks, assuming there is no tree-level mixings between sleptons and Higgs bosons or between leptons and gauginos. Based on the experimental constrai...
We investigate the spin 3/2 baryons in the 27-plet based on flavor SU(3) symmetry. For J = 3/2, we find all the candidates for non-exotic members. For J = 3/2−, we predict a new non-exotic member Λ(1780). Fitting the mass spectrum and calculating the widths of the members show an approximate symmetry of the 27-plet of SU(3). We find that the exotic members have relatively large widths and the Ξ...
Recent data of two-body nonleptonic B meson decays allow a topological-amplitude analysis up to the O(λ2) accuracy, where λ denotes the Wolfenstein parameter. We find a solution from the B → ππ data and a solution from the B → Kπ data, which satisfy the approximate SU(3) flavor symmetry. These solutions indicate that the colorsuppressed tree amplitude is large, all other amplitudes can be under...
The classical formal equivalence upon a redefinition of the gauge connection between Chern-Simons theory and topological massive Yang-Mills theory in three-dimensional Euclidean spacetime is analyzed at the quantum level within the BRST formulation of the Equivalence Theorem. The parameter controlling the change in the gauge connection is the inverse λ of the topological mass. The BRST differen...
We investigate the following questions: Given a measure μΛ on configurations on a subset Λ of a lattice L, where a configuration is an element of ΩΛ for some fixed set Ω, does there exist a measure μ on configurations on all of L, invariant under some specified symmetry group of L, such that μΛ is its marginal on configurations on Λ? When the answer is yes, what are the properties, e.g., the en...
The tricritical point of finite-temperature phase transitions in large N (Higgs) gauge theories. Abstract Gauge theories broken by a single Higgs field are known to have first-order phase transitions in temperature if λ/g 2 ≪ 1, where g is the gauge coupling and λ the Higgs self-coupling. If the theory is extended from one to N Higgs doublets, with U(N) flavor symmetry, the transition is known ...
We present a weak-coupling Yang–Mills model supporting non-Abelian magnetic flux tubes and non-Abelian confined magnetic monopoles. In the dual description the magnetic flux tubes are prototypes of the QCD strings. Dualizing the confined magnetic monopoles we get gluelumps which convert a “QCD string” in the excited state to that in the ground state. Introducing a mass parameter m we discover a...
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