Karlsruhe 2011 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 58: Suche nach neuer Physik III
T 58.2: Vortrag
Freitag, 1. April 2011, 14:15–14:30, 30.34: 022
Search for New Physics in e±q Contact Interactions — •Hayk Pirumov — Physikalisches Institut, Universität Heidelberg, Philosophenweg 12, 69120 Heidelberg
Deep inelastic neutral current e±p scattering at high momentum transfer Q2 allows to study the structure of eq interactions at short distances and to search for new phenomena beyond the Standard Model. The concept of four-fermion contact interactions provides a convenient method to investigate the interference of possible new particle fields associated to large scales with γ and Z fields of the Standard Model.
This talk presents a search for physics beyond the Standard Model in neutral current deep inelastic scattering at high Q2 in e±p collisions at HERA. Studies are based on the data collected by the H1 experiment during years 1994 to 2007. The single differential neutral current cross section measurements d σ /dQ2, corresponding to integrated luminosity of 440pb−1 are well described by the Standard Model and are analyzed to set constrains on new phenomena. Limits for different contact interaction models are determined and preliminary results are presented.