2,614 research outputs found
Spin transfer and polarization of antihyperons in lepton induced reactions
We study the polarization of antihyperon in lepton induced reactions such as
and with polarized beams using
different models for spin transfer in high energy fragmentation processes. We
compare the results with the available data and those for hyperons. We make
predictions for future experiments.Comment: 31 pages, 6 figures. submitted to Phys. Rev. D. content changed,
references adde
Probing new physics with polarization components of the tau lepton in quasielastic scattering process
Kinematics restrict the ability of rare charm decays to explore the charged
Lepton Flavor Violation processes mediated by the quark-level transition. To fill the gap, we propose exploring new physics (NP)
through the quasielastic scattering process and the
polarization of the lepton. As analyzing modes for the
polarization, we consider the decays , , and , and show
that the polarization components can be extracted from analyzing the
kinematics of the visible decay products. In the framework of a general
low-energy effective Lagrangian, we then perform a detailed analysis of the
polarization components in various aspects and scrutinize possible NP signals.
With one upcoming experimental setup, we finally demonstrate promising event
rate can be expected for the cascade process and, even in the worst-case
scenario -- no signals is observed at all -- it can still provide a competitive
potential for constraining the NP, compared with those from the high-
dilepton invariant mass tails at high-energy colliders.Comment: 20 pages, 4 figures, 5 table
(4-Bromo-3,5-dimethyl-1H-pyrazol-1-yl)(2,6-difluoroΒphenΒyl)methanone
There are two molΒecules in the asymmetric unit of the title compound, C12H9BrF2N2O. They have very similar conformations: the dihedral angles between their pyrazole and benzene ring systems are 78.4β
(3) and 78.6β
(4)Β°. In the crystal, weak aromatic ΟβΟ stacking [centroidβcentroid separation = 3.696β
(5)β
Γ
] helps to establish the packing
- β¦