Polarization phenomena for processes (p)over-bar+p -> P+V and mechanisms of OZI violations in phi production

Pak, Namık Kemal
Rekalo, MP
The spin structure of the matrix element for annihilation in flight in the process (p) over bar + p --> P + V with P = pi(0), eta, eta', and V = rho(0),omega,phi, is constructed for collinear kinematics. The expressions for all the one-spin and two-spin polarization observables are found, and the consequences for the triplet enhancement hypothesis of strange particle production in collisions are discussed.


General formalism in collinear regime for pseudoscalar meson production in NN collisions
Pak, Namık Kemal; Rekalo, MP (2001-09-01)
The spin structure of the matrix element for the pseudoscalar meson production processes in nucleon-nucleon collisions is established in the collinear kinematical regime in terms of 3 independent scalar amplitudes. This result is valid for any reaction mechanism and for any energy of the colliding and the produced particles. The complete experiment for the full reconstruction of all 3 complex amplitudes must contain two different classes of polarization experiments. The polarization transfer coefficients ca...
Test of the isospin invariance using polarization effects in slow antiproton annihilation, (p)over-bar+p(n)->P+V
Yalcin, C; Rekalo, MP; Koru, H (World Scientific Pub Co Pte Lt, 1997-03-07)
The spin structure of the amplitudes for antiproton annihilation at rest, (p) over bar + N --> P + V, P = pi, eta; V = rho, omega, phi, is established. The relation between symmetry properties of strong interaction (isospin invariance and the invariance relative to charge conjugation) and the polarization effects in such reactions are derived. It is demonstrated that the simplest polarization effects in (p) over bar + N --> P + V, namely, the elements of V-meson density matrix, are sensitive to possible vio...
Polarization phenomena in open charm photoproduction processes
Tomasi-Gustafsson, E; Rekalo, MP (American Physical Society (APS), 2004-05-01)
We analyze polarization effects in the associative photoproduction of pseudoscalar ((D) over bar (c)) charmed mesons in exclusive processes gamma+N-->Y-c+(D) over bar (c), Y-c=Lambda(c)(+), Sigma(c). Circularly polarized photons induce nonzero polarization of the Y-c hyperon with x and z components (in the reaction plane) and nonvanishing asymmetries A(x) and A(z) for polarized nucleon targets. These polarization observables can be predicted in a model-independent way for the exclusive (D) over bar (c)-prod...
New hidden beauty molecules predicted by the local hidden gauge approach and heavy quark spin symmetry
Xiao, C. W.; Özpineci, Altuğ; Oset, E. (2010-06-24)
Using a coupled channel unitary approach, combining the heavy quark spin symmetry and the dynamics of the local hidden gauge, we investigate the meson-meson interaction with hidden beauty. We obtain several new states of isospin I = 0: six bound states, and weakly bound six more possible states which depend on the influence of the coupled channel effects.
Dispersion Corrected DFT Study of Pentacene Thin Films on Flat and Vicinal Au(111) Surfaces
METE, ERSEN; Danışman, Mehmet Fatih (2015-02-19)
Here we present a density functional theory study of pentacene ultrathin films on flat and vicinal [(455)] Au(111) surfaces. We have performed crystal and electronic structure calculations by using PBE and optB86b-vdW functionals and investigated the effects of long-range van der Waals interactions for different coverages starting from a single isolated molecule up to 4 monolayers of coverage. For an isolated molecule both functionals yield the hollow site as the most stable one with the bridge-60 site bein...
Citation Formats
N. K. Pak and M. Rekalo, “Polarization phenomena for processes (p)over-bar+p -> P+V and mechanisms of OZI violations in phi production,” PHYSICAL REVIEW D, pp. 0–0, 2000, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/62521.