Application of Straw Tube Detectors to Hyperon Studies

• Authors: S. Jowzaee
• Languages of publication: EN

Abstracts

EN

A high statistics measurement of the p̅p → pK⁺Λ reaction was done with the COSY-TOF experiment. The proton beam was polarized up to more than 80%, and its momentum was 2.95 GeV/c. The reconstruction of the pK⁺Λ events was done only with the straw tube tracker due to the higher spatial resolution of the straw tube tracker compared to other subdetectors. The Dalitz plot of the pK⁺Λ events was analyzed to understand the reaction mechanism and presented in this paper. The Dalitz plot shows that the COSY-TOF experiment provides complete kinematic coverage of the phase space of this reaction which made it ideal for p̅p → pK⁺Λ reaction analysis. The influence of different physical effects as pΛ final state interaction, excited nucleon states (N*-resonances) and a coupled channel effect of NΣ-pΛ (NΣ cusp effect) produce significant structures in the Dalitz plot. The angular distribution of the particles in the CMS and helicity frame was also presented in this paper.

Keywords

EN

14.20.Jn   13.75.Cs   29.40.Gx  

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 127
• Issue: 5
• Pages: 1531-1532

Dates

published

2015-05

References

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• [2] S. Jowzaee, Ph.D. Thesis, Jagiellonian University, Kraków 2014
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• [6] S. Jowzaee et al., to be published, 2015

Identifiers

DOI

10.12693/APhysPolA.127.1531