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Articles 1  22 of 22
FullText Articles in Physics
Weak Decays Of The HDibaryon, Jf Donoghue, E Golowich, Br Holstein
Weak Decays Of The HDibaryon, Jf Donoghue, E Golowich, Br Holstein
Barry R Holstein
We calculate decay rates and branching fractions for the postulated S=2 H dibaryon, both for the expected ΔS=1 channels (nΛ,nΣ0,pΣ) and for the possible ΔS=2 mode (nn). For ΔS=1 decays we find the S waves are dominated by ΔI=(3/2) transitions due to the Pauli principle, which forces the sixquark final state to be in a SU(3) 27plet. If observed, this would be the first breakdown of the ΔI=1/2 rule. The lifetime is long, of order 108 sec, which should be considered in planning experiments. In the ΔS=2 case ...
Gravitational Coupling At Finite Temperature, Jf Donoghue, Br Holstein, Rw Robinett
Gravitational Coupling At Finite Temperature, Jf Donoghue, Br Holstein, Rw Robinett
Barry R Holstein
We discuss a thermodynamic identity which helps explain why ≠ at finite temperature. In addition we complete the discussion of the gravitational force by including the gravitational variation of the temperature. Gradients in the temperature induce extra forces not accounted for by the usual coupling to the energymomentum tensor.
The Lifetime Of A Deeply Bound H Dibaryon And The Cygnus X3 Events, John Donoghue, Eugene Golowich, Barry Holstein
The Lifetime Of A Deeply Bound H Dibaryon And The Cygnus X3 Events, John Donoghue, Eugene Golowich, Barry Holstein
John Donoghue
Rigid Backbone: A New Geometry For Percolation, Anthony Roy Day, R. R. Tremblay, A.M. S. Tremblay
Rigid Backbone: A New Geometry For Percolation, Anthony Roy Day, R. R. Tremblay, A.M. S. Tremblay
Anthony Roy Day
It is shown that the diluted twodimensional centralforce problem belongs to a new class of percolation problems. Geometric properties such as the fractal dimension of the backbone, the correlationlength exponent, and the connectivity are completely different from those of previously studied percolation problems. Explicit calculations of the backbone and the construction of an algorithm which identifies the infinite rigid cluster clearly demonstrate the absence of singly connected bonds, the overwhelming importance of loops, and the longrange nature of the rigidity.
G. N. Lewis' Atom And Quantum Monte Carlo Studies Of Liquids, Randall W. Hall, Peter G. Wolynes
G. N. Lewis' Atom And Quantum Monte Carlo Studies Of Liquids, Randall W. Hall, Peter G. Wolynes
Randall W. Hall
Auger Analysis Of Si–H Bonding And Hydrogen Concentration In Hydrogenated Amorphous Silicon, Nancy Burnham, Aj Nelson, Ab Schwartzlander, Se Asher, Ll Kazmerski
Auger Analysis Of Si–H Bonding And Hydrogen Concentration In Hydrogenated Amorphous Silicon, Nancy Burnham, Aj Nelson, Ab Schwartzlander, Se Asher, Ll Kazmerski
Nancy A. Burnham
Auger electron spectroscopy line‐shape analysis of the Si‐L 2 3 V V peak has been performed on hydrogenated amorphous silicon (a‐Si:H). Both a‐Si:H produced by hydrogen implantation of siliconsingle crystals (for analytical standards) and thin films (fabricated for solar cell applications) were examined in these studies. Hydrogen concentrations were confirmed by secondary ion mass spectrometry, and samples having hydrogen content over the range 101 6–102 2 cm− 3 were evaluated. Correlations between the area under the deconvoluted L 2 3 V V transition peak and the known hydrogen content have resulted in a ...
Scanning Auger Microprobe Studies Of Ball Cratered Cds/Cuinse2 Solar Cells, Nancy Burnham, Ll Levenson, Rj Matson, R Noufi, Ll Kazmerski
Scanning Auger Microprobe Studies Of Ball Cratered Cds/Cuinse2 Solar Cells, Nancy Burnham, Ll Levenson, Rj Matson, R Noufi, Ll Kazmerski
Nancy A. Burnham
CdS/CuInSe2solar cell films are typically several micrometers thick. Composition profiles of these films are usually carried out on fracture cross sections by scanning Auger microscopy or by recording Auger spectra during ion milling. For fracture cross sections, the depth resolution depends on the electron beam diameter and the roughness of the fracture surface. Ion milling is time consuming, and artifacts are caused by ion beam faceting. Ball cratering requires only a fraction of an hour and provides significant magnification of the film cross section. There is sufficient contrast, both in optical and electron microscopy, to distinguish between CdS and ...
Chiral Symmetry, Nonleptonic Hyperon Decay, And The FeinbergKabirWeinberg Theorem, Jf Donoghue, Br Holstein
Chiral Symmetry, Nonleptonic Hyperon Decay, And The FeinbergKabirWeinberg Theorem, Jf Donoghue, Br Holstein
Barry R Holstein
We demonstrate that additional (kaonpole) diagrams must be appended to the traditional commutatorplusbaryonpole approach to nonleptonic hyperon decay. The modified analysis satisfied the constraints of the FeinbergKabirWeinberg theorem. The new terms are not numerically significant in the case of the usual currentcurrent Hamiltonian, in the continuum limit, but can be important for work using lattice techniques or for other Hamiltonians.
The Rigid Backbone: A New Geometry For Percolation., Anthony Day, R. Tremblay, A.M. Tremblay
The Rigid Backbone: A New Geometry For Percolation., Anthony Day, R. Tremblay, A.M. Tremblay
Anthony Roy Day
It is shown that the diluted twodimensional centralforce problem belongs to a new class of percolation problems. Geometric properties such as the fractal dimension of the backbone, the correlationlength exponent, and the connectivity are completely different from those of previously studied percolation problems. Explicit calculations of the backbone and the construction of an algorithm which identifies the infinite rigid cluster clearly demonstrate the absence of singly connected bonds, the overwhelming importance of loops, and the longrange nature of the rigidity.
Electromagnetic And Isopin Breaking Effects Decrease Epsilon'/Epsilon, Jf Donoghue, E Golowich, Br Holstein, J Trampetic
Electromagnetic And Isopin Breaking Effects Decrease Epsilon'/Epsilon, Jf Donoghue, E Golowich, Br Holstein, J Trampetic
Barry R Holstein
No abstract provided.
Chiral PerturbationTheory Corrections To Kl]GammaGamma, Jf Donoghue, Br Holstein, Ycr Lin
Chiral PerturbationTheory Corrections To Kl]GammaGamma, Jf Donoghue, Br Holstein, Ycr Lin
Barry R Holstein
No abstract provided.
Electromagnetic And Isospin Breaking Effects Decrease Ε′/Ε, John Donoghue, Eugene Golowich, Barry Holstein, J. Trampetic
Electromagnetic And Isospin Breaking Effects Decrease Ε′/Ε, John Donoghue, Eugene Golowich, Barry Holstein, J. Trampetic
John Donoghue
A New Four Quark Operator=2 Local Operator, John Donoghue, E. Golowich, German Valencia
A New Four Quark Operator=2 Local Operator, John Donoghue, E. Golowich, German Valencia
John Donoghue
Is D⁰→Φκ⁻⁰ Really A Clear Signal For The Annihilation Diagram?, John Donoghue
Is D⁰→Φκ⁻⁰ Really A Clear Signal For The Annihilation Diagram?, John Donoghue
John Donoghue
Dispersive Effects In D^0  D^0 Mixing, John Donoghue, E. Golowich, Barry Holstein
Dispersive Effects In D^0  D^0 Mixing, John Donoghue, E. Golowich, Barry Holstein
John Donoghue
Weak Decays Of The H Dibaryon, John Donoghue, E. Golowich, Barry Holstein
Weak Decays Of The H Dibaryon, John Donoghue, E. Golowich, Barry Holstein
John Donoghue
Gravitational Coupling At Finite Temperature, John Donoghue, Barry Holstein, R.W. Robinett
Gravitational Coupling At Finite Temperature, John Donoghue, Barry Holstein, R.W. Robinett
John Donoghue
Hyperon Decays And Cp Nonconservation, John Donoghue, XiaoGang He, Sandip Pakvasa
Hyperon Decays And Cp Nonconservation, John Donoghue, XiaoGang He, Sandip Pakvasa
John Donoghue
Splay Rigidity In The Diluted Central Force Elastic Network, Anthony Roy Day, A.M. S. Tremblay, R. R. Tremblay
Splay Rigidity In The Diluted Central Force Elastic Network, Anthony Roy Day, A.M. S. Tremblay, R. R. Tremblay
Anthony Roy Day
A Comment on the Letter by Wang and Harris, Phys. Rev. Lett. 55, 2459 (1985).
Chiral Perturbation Theory Corrections To K_{L}→Γγ, John Donoghue
Chiral Perturbation Theory Corrections To KL→Γγ, John Donoghue
John Donoghue
Nonequilibrium Fluctuations Studied By A Rarefied Gas Simulation, Alejandro Garcia
Nonequilibrium Fluctuations Studied By A Rarefied Gas Simulation, Alejandro Garcia
Alejandro Garcia
A dilute gas under a constant heat flux is studied with use of a Monte Carlo simulation based on the Boltzmann equation. Results for several spatial correlation functions of equaltime fluctuations are reported and compared qualitatively with previous fluctuating hydrodynamics calculations for liquids.
RenormalizationGroup Analysis Of Heat Capacity Amplitude, Scott I. Chase, Miron Kaufman
RenormalizationGroup Analysis Of Heat Capacity Amplitude, Scott I. Chase, Miron Kaufman
Miron Kaufman
Critical amplitudes A+ associated with the temperature variation of the heat capacity are analyzed by means of renormalizationgroup techniques in both position and momentum spaces. We describe a mechanism according to which the amplitudes A diverge as the critical exponent a approaches a nonpositive integer. In between two consecutive divergences at least one amplitude vanishes at least once. The coefficient P in the expansion A+ /A =1—Pa+0 (a~) is computed by means of e expansion and MigdalKadanoff renormalizationgroup technique. Systems for which the critical exponent alpha is negative but larger than —1 exhibit either a cusped heat capacity ...