Biomedical subjects

L Szymanowski

Publications and source records attributed to L Szymanowski.

8 recordsLinked to original sources

PubMed2002

Exclusive photoproduction of hard dijets and magnetic susceptibility of the QCD vacuum.

We argue that coherent production of hard dijets by linearly polarized real photons can provide direct evidence for chirality violation in hard processes, the first measurement of the magnetic susceptibility of the quark condensate and the photon distribution amplitude. It can also serve as a sensitive probe of the generalized gluon parton distribution. Numerical calculations are presented for HERA kinematics.

Journal Article↗

PubMed2001

Towards a solution of the charmonium production controversy: k( perpendicular) factorization versus color-octet mechanism.

The cross section of chi(cJ) hadroproduction is calculated in the k( perpendicular)-factorization approach. We find a significant contribution of the chi(c1) state due to non-applicability of the Landau-Yang theorem because of off-shell gluons. The results are in agreement with data and, in contrast to the collinear factorization, show a dominance of the color-singlet part and a strong suppression of the color octet contribution. Our results could therefore lead to a solution of the long-standing controversy between the color-singlet model and the color-octet mechanism.

Journal Article↗

PubMed1995