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- Mikkel B. Johnson, Josee Adamson, A. Grant Mauk
- Biophysical journal
- 1998

Selected functional and spectroscopic properties of two human hemoglobin (HbA0) derivatives that were site-specifically cross-linked in the cleft between beta-chains where 2, 3-bisphosphoglycerate normally binds have been determined to assess the effects of the cross-linking on the behavior of the protein. Trimesoyl tris(3,5-dibromosalicylate) (TTDS)… (More)

- Mikkel B. Johnson, Leonard S. Kisslinger
- 1999

We propose an analog of the familiar gap equation for the case of four-quark condensates at finite temperature. The condensates of interest correspond to scalar, vector, psudoscalar, axial vector, and tensor Dirac structures. Working with correlators at zero chemical potential without factorization, we arrive at coupled equations for these four-quark… (More)

- D. Alastair Smith, Judd D. Bowman, +20 authors Vivian W Yuan
- 2015

Parity nonconservation (PNC) has been studied in neutron p-wave resonances of 117Sn. The longitudinal asymmetries were measured for 29 p-wave resonances in the neutron energy range 0.8 eV to 1100 eV. Statistically significant PNC effects were observed for four resonances. A statistical analysis determined the rms weak mixing matrix element and the weak… (More)

- D. Alastair Smith, Judd D. Bowman, +18 authors Vivian W Yuan
- 2015

Parity violation has been studied recently for neutron resonances in 117Sn. The neutron resonance spectroscopy is essential for the analysis of the parity violation data. We have measured neutron resonances in 117Sn for neutron energies from 1 to 1500 eV using the time-of-flight method and the (n,γ) reaction. The sample was enriched to 87.6% 117Sn. Neutron… (More)

- Leonard S. Kisslinger, Mikkel B. Johnson
- 2008

We include instanton effects in QCD sum rules for coupled scalar glueballs and mesons. We find a light glueball/sigma as in earlier studies without instantons, but in a lattice-type pure instanton model the light glueball/sigma is not found. In the 1-2 Gev region we now find that lightest I=0 meson, in the region of the fo(1370), has no direct glueball… (More)

We investigate theoretical approaches to pion–nucleus elastic scattering at high energies (300 ≤ Tπ ≤ 1 GeV). A “model–exact” calculation of the lowest–order microscopic optical model, carried out in momentum space and including the full Fermi averaging integration, a realistic off–shell pion–nucleon scattering amplitude and fully covariant kinematics, is… (More)

- Mikkel B. Johnson, Leonard S. Kisslinger
- 2008

We develop a three-point formalism to treat vacuum susceptibilities used for the coupling of currents to hadrons within the method of QCD Sum Rules. By introducing nonlocal condensates, with the space-time structure taken from fits to experimental parton distrbutions, we show that one can treat hadronic coupling at zero or low momentum transfer as well as… (More)

- Mikkel B. Johnson, L. S. Kisslinger, E. Michael Henley
- 2004

Bubble collisions in cosmological phase transitions are explored, taking the non-abelian character of the gauge fields into account. Both the QCD and electroweak phase transitions are considered. Numerical solutions of the field equations in several limits are presented. PACS: 12.15.Ji, 12.38.Lg, 12.38.Mh, 98.80.Cq, 98.80.Hw

We present a formalism that extends the Majorana-construction to arbitrary spin (j, 0)⊕(0, j) representation spaces. For the example case of spin-1, a wave equation satisfied by the Majorana-like (1, 0) ⊕ (0, 1) spinors is constructed and its physical content explored. The (j, 0) ⊕ (0, j) Majorana-construct is found to possess an unusual classical and… (More)

We present the first application of statistical spectroscopy to study the rootmean-square value of the parity nonconserving (PNC) interaction matrix element M determined experimentally by scattering longitudinally polarized neutrons from compound nuclei. Our effective PNC interaction consists of a standard two-body meson-exchange piece and a “doorway” term… (More)