نتایج جستجو برای: q angle
تعداد نتایج: 250081 فیلتر نتایج به سال:
Using time-resolved small angle neutron scattering, we have measured the wave-number-dependent structure factor S(q) of monodisperse nanoemulsions that aggregate and gel after we suddenly turn on a strong, short-range, slippery attraction between the droplets. At high q, peaks in S(q) appear as dense clusters of droplets form, and S(q) increases strongly toward low q, as these dense clusters be...
Let Aθ be the rotation C*-algebra for angle θ. For θ = p/q with p and q relatively prime, Aθ is the sub-C*-algebra of Mq(C(T )) generated by a pair of unitaries u and v satisfying uv = e2πiθvu. Let hθ,λ = u+u +λ/2(v+ v) be the almost Mathieu operator. By proving an identity of rational functions we show that for q even, the constant term in the characteristic polynomial of hθ,λ is (−1) q/2(1 + ...
The study of Bhabha scattering at ee colliders probes the running of the electromagnetic coupling. After early measurements by the VENUS collaboration at TRISTAN and the by L3 collaboration at LEP, two recent analyses have been performed by the OPAL and L3 collaborations. The OPAL collaboration studied highstatistics low-angle Bhabha scattering at LEP, achieving a precise determination of the r...
In the title solvate, C44H30Cl2N2O2·2C4H8O2, the complete polycyclic mol-ecule is generated by inversion symmetry. The dihedral angle between the quinolyl ring system (Q; r.m.s. deviation = 0.020 Å) and the pendant phenyl ring is 78.80 (6)°; the dihedral angle between Q and the central benzene ring is 85.92 (7)°. In the crystal, the components are linked by C-H⋯O and C-H⋯π inter-actions, genera...
We propose an observable ${q}_{*}$ sensitive to transverse momentum dependence (TMD) in $eN\ensuremath{\rightarrow}ehX$, with ${q}_{*}/{E}_{N}$ defined purely by lab-frame angles. In 3D measurements of confinement and hadronization this resolves the crippling issue accurately reconstructing small ${P}_{hT}$. prove factorization for $\mathrm{d}{\ensuremath{\sigma}}_{h}/\mathrm{d}{q}_{*}$ ${q}_{*...
We propose a new parametrization for the quark and lepton mixing matrices: the two 12-mixing angles (the Cabibbo angle and the angle responsible for solar neutrino oscillations) are at zeroth order π/12 and π/5, respectively. The resulting 12-elements in the CKM and PMNS matrices, Vus and Ue2, are in this order irrational but simple algebraic numbers. The difference between π/5 and the observed...
Purpose: Measurement error when determining the size of an angle is always an issue for clinicians. Computer assistance may help to decrease that error. The purpose of this study is to determine the amount of error when measuring Q-angles using a goniometer and the IMAGEJ program, a public domain program developed at the U.S. National Institutes of Health. Methods: Two investigators participate...
The study of low-angle and large-angle Bhabha scattering at LEP gives access to the running of the electromagnetic coupling. Two recent measurements of the OPAL and L3 collaborations probe the running of α in the regions 1.8 GeV < −Q < 6.1 GeV and 1800 GeV < −Q < 21600 GeV, respectively. The strategies and the results of these studies are presented. A global overview is given of the agreement o...
The title hydrate, C(27)H(23)NO(2)·H(2)O, features an almost planar quinoline residue (r.m.s. deviation = 0.015 Å) with the benzene [dihedral angle = 63.80 (7) °] and chalcone [C-C-C-O torsion angle = -103.38 (18)°] substituents twisted significantly out of its plane. The configuration about the C=C bond [1.340 (2) Å] is E. In the crystal, mol-ecules related by the 2(1) symmetry operation are l...
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