First Studies of Exclusive Reactions in the Resonance Region with CLAS12
ORAL
Abstract
The CLAS12 detector started data taking with a polarized 10.6-GeV electron beam at Jefferson Laboratory (JLab) this February. The N* program of CLAS12 is focussed on the study of the structure of excited nucleon states for the still unexplored regions of photon virtualities Q² down to 0.05 GeV² and for Q² from 5 – 12 GeV². The focus at low Q² is the search for new so-called hybrid baryon states. At high Q², CLAS12 will map out the N* core quark structure at distances where the transition from quark gluon confinement to pQCD takes place. The talk will focus on the first measurements of the different exclusive reactions with CLAS12. A special focus will be on the exclusive ep→epπ0 channel and the semi-inclusive ep→eπ0X production. For the exclusive channel, the beam spin asymmetry will be studied in the resonance region. These processes can be seen as a benchmark for the capabilities of CLAS12. In addition, the measurement and characterization of the Φ(1020) and Λ(1520) in the exclusive channel ep→epK+K- will be presented. For the Λ(1520), the first results for the beam-spin asymmetry will be shown.
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Presenters
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Stefan Diehl
University of Connecticut, Storrs, Connecticut 06269, USA, University of Connecticut
Authors
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Stefan Diehl
University of Connecticut, Storrs, Connecticut 06269, USA, University of Connecticut
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Kyungseon Joo
Univ of Connecticut - Storrs, University of Connecticut