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...
Polarization phenomena for p)over-bar+p ->(Lambda)over-bar+Lambda in collinear kinematics as a test of polarized strangeness
Pak, Namık Kemal; Rekalo, MP (Elsevier BV, 1999-03-25)
Polarization effects for the process (p)over-bar + p --> (Lambda)over-bar + Lambda are studied for the collinear Lambda-production. Using the triplet channel dominance hypothesis for the (p)over-bar p-annihilation, we prove that the longitudinal polarization transfer coefficient from the initial proton to final Lambda hyperon must be positive in this kinematical regime, independently of any model. The exact value of this coefficient, however, depends on the sign of the strange quark contribution to the prot...
Tensor form factors of B -> K-1 transition from QCD light cone sum rules
Alıyev, Tahmasıb; Savcı, Mustafa (Elsevier BV, 2011-05-30)
The tensor form factors of B into p-wave axial vector meson transition are calculated within light cone QCD sum rules method. The parametrizations of the tensor form factors based on the series expansion are presented.
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.