8,520 research outputs found
An Investigation of a Sono-chemical Approach in Sterilization Problems Fourth Semiannual Progress Report, 1 Jan. - 30 Jun. 1966
Airborne ultrasonic sound in combination with propylene oxide on spores to achieve sterilizatio
The Polarized and Unpolarized Photon Content of the Nucleon
The equivalent photon content of polarized and unpolarized nucleons (protons,
neutrons), utilized in Weizs\"acker--Williams approximations, are presented.
For this purpose a new expression for the elastic photon component of a
polarized nucleon is derived. The inelastic photon components are obtained from
the corresponding momentum evolution equations subject to the boundary
conditions of their vanishing at some low momentum scale. The resulting photon
asymmetries, important for estimating cross section asymmetries in photon
induced subprocesses are also presented for some typical relevant momentum
scales.Comment: LaTeX, 16 pages, 6 figure
Neutrinos and Electromagnetic Gauge Invariance
It is discussed a recently proposed connection among U(1)
electromagnetic gauge invariance and the nature of the neutrino mass terms in
the framework of \mbox {SU(3)}_C\otimes G_W \otimes {\mbox U(1)}_N, =
SU(3), extensions of the Standard Model. The impossibility of that
connection, also in the extended case = SU(4), is demonstrated.Comment: 10 pages, Revtex 3.0, no figure
Delineating the polarized and unpolarized photon distributions of the nucleon in eN collisions
The production rates of lepton-photon and dimuon pairs at the HERA collider
and the HERMES experiment are evaluated in the leading order equivalent photon
approximation. It is shown that the production rates are sufficient to
facilitate the extraction of the polarized and unpolarized equivalent photon
distributions of the proton and neutron in the available kinematical regions.
It is pointed out that these results indicate the possibility of additional,
independent, tests concerning the unpolarized and polarized structure functions
F_{1,2}^N and g_{1,2}^N, respectively, of the nucleon.Comment: Final version, to appear in Eur. Phys.
The Foreign Corrupt Practices act and Corporate Charity: Rethinking the Regulations
American companies bring U.S. innovation and capital to all corners of the globe. The U.S. corporate presence abroad is seen not only in oil rigs and factories, but also in corporate development projects and humanitarian relief efforts
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