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

Strangeness Production in Deep-Inelastic ep Scattering at HERA

Jul 16, 2009, 5:30 PM
20m
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

Speaker

Julia Ruiz Tabasco (Cinvestav - Unidad Mérida)

Description

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)

Co-author

Julia Ruiz Tabasco (Cinvestav - Unidad Mérida)

Presentation materials