3,608 research outputs found
Quasi-two-body decays in the perturbative QCD approach
We study the quasi-two-body decays by employing
the perturbative QCD approach. The two-meson distribution amplitudes
\Phi_{K\pi}^{\text{P-wave}} are adopted to describe the final state
interactions of the kaon-pion pair in the resonance region. The resonance line
shape for the -wave component in the time-like form factor
is parameterized by the relativistic Breit-Wigner function. For
most considered decay modes, the theoretical predictions for their branching
ratios are consistent with currently available experimental measurements within
errors. We also disscuss some ratios of the branching fractions of the
concerned decay processes. More precise data from LHCb and Belle-II are
expected to test our predictions.Comment: 10 pages, 3 figures and 2 tables.To be published in EPJ
Network nonlocality sharing via weak measurements in the generalized star network configuration
Network nonlocality exhibits completely novel quantum correlations compared
to standard quantum nonlocality. It has been shown that network nonlocality can
be shared in a generalized bilocal scenario via weak measurements [Phys. Rev.
A. 105, 042436 (2022)]. In this paper, we investigate network nonlocality
sharing via weak measurements in a generalized star-shaped network
configuration with arbitrary numbers of unbiased dichotomic input , which
includes branches and adds (-1) more parties in each branch to the
original star network scenario. It is shown that network
nonlocality sharing among all observers can be revealed from simultaneous
violation of inequalities in the () and ()
scenarios for any branches. The noise resistance of network nonlocality
sharing with a precise noise model is also analyzed.Comment: 8 pages, 3 figures. update new result
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