14,661 research outputs found
A priori estimates for free boundary problem of incompressible inviscid magnetohydrodynamic flows
In the present paper, we prove the a priori estimates of Sobolev norms for a
free boundary problem of the incompressible inviscid MHD equations in all
physical spatial dimensions and 3 by adopting a geometrical point of view
used in Christodoulou-Lindblad CPAM 2000, and estimating quantities such as the
second fundamental form and the velocity of the free surface. We identify the
well-posedness condition that the outer normal derivative of the total pressure
including the fluid and magnetic pressures is negative on the free boundary,
which is similar to the physical condition (Taylor sign condition) for the
incompressible Euler equations of fluids.Comment: 34 page
T-odd generalized and quasi transverse momentum dependent parton distribution in a scalar spectator model
Generalized transverse momentum dependent parton distributions (GTMDs), as
mother funtions of transverse momentum dependent parton distributions (TMDs)
and generalized parton distributions (GPDs), encode the most general parton
structure of hadrons. We calculate four twist-two time reversal odd GTMDs of
pion in a scalar spectator model. We study the dependence of GTMDs on the
longitudinal momentum fraction carried by the active quark and the
transverse momentum for different values of skewness defined
as the longitudinal momentum transferred to the proton as well as the total
momentum transferred to the proton. In addition, the
quasi-TMDs and quasi-GPDs of pion have also been investigated in this paper
Searches for the Anomalous FCNC Top-Higgs Couplings with Polarized Electron Beam at the LHeC
In this paper, we study the single top and Higgs associated production in the top-Higgs FCNC couplings at the LHeC with the electron beam
energy of = 60 GeV and = 120 GeV, combination of a 7 TeV and 50
TeV proton beam. With the possibility of e-beam polarization ( = 0,
), we distinct the Cut-based method and the Multivariate Analysis (MVA)
based method, and compare with the current experimental and theoretical limits.
It is shown that the branching ratio Br can be probed to 0.113
(0.093) , 0.071 (0.057) , 0.030 (0.022) and 0.024 (0.019)
with the Cut-based (MVA-based) analysis at (, ) = (7 TeV, 60
GeV), (, ) = (7 TeV, 120 GeV), (, ) = (50 TeV, 60
GeV) and (, ) = (50 TeV, 120 GeV) beam energy and 1
level. With the possibility of e-beam polarization, the expected limits can be
probed down to 0.090 (0.073) , 0.056 (0.045) , 0.024 (0.018) and
0.019 (0.015) , respectively.Comment: 13pages, 5 figures. Advance in High Energy Physic
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