Results 101 to 110 of about 50,138 (237)
Mathematical Methods in the Applied Sciences, Volume 47, Issue 3, Page 1204-1217, February 2024.Many problems in computer vision today are solved via deep learning. Tasks like pose estimation from images, pose estimation from point clouds or structure from motion can all be formulated as a regression on rotations. However, there is no unique way of parametrizing rotations mathematically: matrices, quaternions, axis‐angle representation or Euler ...
Alberto Pepe +2 more
wiley +1 more source
European Physical Journal C: Particles and Fields, 2018 We investigate the decays of $$\bar{B}^0_s$$ B¯s0 , $$\bar{B}^0$$ B¯0 and $$B^-$$ B- into $$\eta _c$$ ηc plus a scalar or vector meson in a theoretical framework by taking into account the dominant process for the weak decay of $$\bar{B}$$ B¯ meson into $
Ju-Jun Xie, Gang Li
doaj +1 more source
Mathematical Methods in the Applied Sciences, Volume 47, Issue 3, Page 1218-1235, February 2024.If an initial frame of vectors {ei}$$ \left\{{e}_i\right\} $$ is related to a final frame of vectors {fi}$$ \left\{{f}_i\right\} $$ by, in geometric algebra (GA) terms, a rotor, or in linear algebra terms, an orthogonal transformation, we often want to find this rotor given the initial and final sets of vectors.
Anthony Lasenby +2 more
wiley +1 more source
The LHC upper bounds for $pp \to \text{diboson}$, $t\bar t$ cross section on fermionic dark matter
, 2017 The ATLAS report in August 2016 provided an upper limit for the $pp\to$ diboson and $t\bar t$ cross sections. We consider a pseudoscalar-mediated fermionic dark matter together with gluon and photon effective operators interacting with the pseudoscalar ...
Ghorbani, Karim, Ghorbani, Parsa Hossein
core +1 more source
Spin 1/2 one‐ and two‐particle systems in physical space without eigen‐algebra or tensor product
Mathematical Methods in the Applied Sciences, Volume 47, Issue 3, Page 1457-1470, February 2024.Under the spin–position decoupling approximation, a vector with a phase in 3D orientation space endowed with geometric algebra substitutes the vector–matrix spin model built on the Pauli spin operator. The standard quantum operator‐state spin formalism is replaced with vectors transforming by proper and improper rotations in the same 3D space ...
Sokol Andoni
wiley +1 more source
Distribution amplitudes of pseudoscalar mesons
, 2006 Presented at XXIV International Symposium on Lattice Field Theory, July 23-28 2006, Tucson Arizona ...
Braun, Vladimir M. +10 more
openaire +3 more sources
Evidence for a new pseudoscalar meson
Physics Letters B, 1981 Abstract Performing a PWA of the π − π − π + system over the −t p/p range 0.2 to 0.4 GeV 2 we find evidence for a J P = 0 − , J G =1 − meson of mass 1342 ± 20 MeV and width 220 ±70 MeV decaying into ϵπ. This state is produced by natural parity exchange with a slope similar to that of elastic scattering.
M. Bonesini +13 more
openaire +3 more sources
Relativistic Effects of Mixed Vector-Scalar-Pseudoscalar Potentials for Fermions in 1+1 Dimensions
, 2007 The problem of fermions in the presence of a pseudoscalar plus a mixing of vector and scalar potentials which have equal or opposite signs is investigated.
Castro, L. B. +2 more
core +1 more source
, 1992 Gluon fusion into a very heavy neutrino pair by Higgs exchange is shown to lead to substantial production cross sections at $pp$ supercolliders even without any extra generation of quarks.
Barger +25 more
core +1 more source
Internal symmetry implications of the Veneziano model in pseudoscalar-pseudoscalar scattering
Nuclear Physics B, 1969 Abstract The leading order Veneziano model amplitudes for ( J P ) 0 − × 0 − → 0 − × 0 − scattering ∗∗ constrained by the absence of “exotic” resonances, is shown to predict the coupling constant relation of SU(3) coupled with the quark-model/SU(6) ideal singlet-octet mixing in the 1 − , 2 + , nonets.
openaire +2 more sources