Jul 16 – 22, 2009
Kraków, Poland
Europe/Warsaw timezone

Strangeness Production in Deep-Inelastic ep Scattering at HERA

Jul 16, 2009, 5:30 PM
Exhibition room B (Kraków, Poland)

Exhibition room B

Kraków, Poland

The Auditorium Maximum of the Jagiellonian University 33 Krupnicza Street 31-123 Kraków
QCD in hadronic physics VI. QCD in Hadronic Physics


Julia Ruiz Tabasco (Cinvestav - Unidad Mérida)


The production of strange hadrons is investigated using deep-inelastic scattering events measured with the H1 detector at HERA. The measurements of K_s and Lambda production are performed in two regions of phase space defined by the negative four-momentum transfer squared of the photon Q^2. The K_s and Lambda production cross sections and their ratios are determined and presented differentially as a function of several kinematical variables. The K_s production rate is compared to the production of charged particles in the same region of phase space. In addition, the Lambda - Anti-Lambda asymmetry is measured. The production of K*(892) vector mesons in deep-inelastic scattering at low Q^2, observed through the decay chain K*+- --> K0s pi+-, is measured for the first time at HERA. The analysis is based on data taken in the HERA-II running period. Inclusive cross sections are presented as a function of the transverse momentum squared P_T*^2, the rapidity y* and the centre-of-mass energy W of the hadronic final state. The data are compared to theoretical predictions, based on leading order Monte Carlo programs with parton showers.

Primary author

Katja Krueger (Heidelberg University)


Julia Ruiz Tabasco (Cinvestav - Unidad Mérida)

Presentation materials